High-Volume Email: Multi-Workspace Setup Guide

When managing email campaigns that send tens of thousands of emails monthly, a single domain and a few mailboxes won’t cut it. High-volume email operations, especially for cold outreach, demand a multi-workspace system to maintain deliverability, avoid spam filters, and protect sender reputation.

Here’s the core idea: Instead of sending all emails from one domain, distribute the workload across multiple domains, mailboxes, and workspaces. This approach isolates risk, ensures flexibility, and allows for better management of email volume.

Key Takeaways:

• Why Multi-Workspace Systems?
  • Avoid spam filters by spreading email volume across domains.
  • Isolate issues (e.g., spam complaints) to prevent widespread impact.
  • Organize by client, brand, or region for better reporting and control.
• How to Plan Your Setup:
  • Calculate daily sending limits: ~200–300 emails per mailbox after warm-up.
  • Limit sends per domain to 2,000–5,000 emails daily.
  • Scale gradually to maintain reputation.
• Tools to Use:
  • Mailforge: Automates setup for domains, mailboxes, and DNS records (SPF, DKIM, DMARC).
  • Warmforge: Prepares mailboxes for production by simulating engagement during warm-up.
• Best Practices:
  • Monitor bounce rates (<3%), spam complaints (<0.1%), and open rates.
  • Use alternate domains (e.g., trybrand.com) for outreach to protect primary domains.
  • Automate DNS setup and bulk updates to save time and reduce errors.

This guide walks you through creating a scalable, risk-managed email system, from planning infrastructure to maintaining long-term deliverability.

Planning Your Multi-Workspace Email Infrastructure

When scaling high-volume email campaigns, effective capacity planning is the backbone of success. It’s not just about creating workspaces; it’s about aligning your business goals with the right infrastructure. The difference between a system that handles growth effortlessly and one that collapses under pressure often comes down to proper planning. To scale successfully, you need to determine the number of domains, mailboxes, and workspaces required to meet your targets - while avoiding spam filters and keeping your team’s workload manageable. This process builds on the multi-workspace framework and sets the foundation for calculating email volume and resource needs.

Calculating Email Volume and Resource Needs

Start by defining your sales targets and working backward to calculate the email volume required to hit those goals. For instance, if your goal is to secure 100 new customers each month and your reply-to-close rate is 20% (1 in 5 replies converts to a customer), you’ll need 500 replies. If your average reply rate is 5%, that means sending 10,000 emails per month. The formula looks like this:

Total monthly emails = (Sales target ÷ Close rate from replies) ÷ Reply rate

Once you have the monthly email volume, break it down further into daily sends. For 10,000 emails per month, you’d send roughly 333 emails daily (based on a 30-day month). Next, figure out how many mailboxes you’ll need. After a 4–6 week warm-up period, each mailbox can handle 200–300 emails daily. Using 250 emails as a safe average, you’d need at least 2 mailboxes to send 333 emails daily (333 ÷ 250 ≈ 1.3, rounded up to 2 for safety).

Domains also play a critical role. A single domain can support multiple mailboxes, but overloading a domain is risky. A good rule of thumb is to limit daily sends per domain to 2,000–5,000 emails, especially for newer domains. For example, if your 2 mailboxes send 333 emails daily, you’re well within the safe limits of a single domain.

As your campaigns grow, the math scales up. Let’s say you need to send 200,000 emails per month - about 6,667 emails daily. With a 250-email-per-mailbox limit, you’d require 27 mailboxes. To stay within domain limits (2,000 emails per day), you’d need at least 4 domains. Organizing this setup might involve creating 5–8 workspaces, each with 1–2 domains and 3–5 mailboxes.

For precise calculations, Mailforge offers an in-app calculator that considers your total contact volume and emails per contact, helping you determine the exact number of domains and mailboxes needed to maintain deliverability.

Always leave room for growth. Build in a 20–30% buffer to handle unexpected spikes. For instance, if your calculations suggest 20 mailboxes, provision 25 to avoid scrambling for resources mid-campaign.

Setting Sending Limits and Scaling Safely

Gradual ramp-up is essential to maintaining a strong sender reputation. Sending limits aren’t just about staying under provider caps - they’re about ensuring your emails don’t get flagged as spam. Start slow and increase volume incrementally.

For new mailboxes, begin with 20–30 emails per day in the first week, focusing on warm-up activities like generating opens and replies. In the second week, increase to 50–70 emails daily, combining warm-up actions with light cold outreach. By week three, you can scale to 100–150 emails per day. After 4–6 weeks, most mailboxes can handle 200–300 cold emails daily, provided you monitor bounce rates (keep them under 2–3%) and spam complaints (aim for under 0.1%).

Domains require similar caution. Even if you have 10 mailboxes on one domain, avoid maxing them out immediately. Start with 1–2 mailboxes and gradually ramp them up. Only add more mailboxes once the domain demonstrates stable deliverability. Avoid sending more than 2,000–5,000 cold emails per day across all mailboxes on a single domain, especially if it’s new or has low authority.

When using multiple domains within a workspace, balance the load. For example, if you’re sending 3,000 emails daily across two domains, aim for an even split of 1,500 emails per domain rather than an uneven 2,000/1,000 distribution.

"Procedures that usually took hours (setting DKIM, SPF, etc. records) for multiple domains, now take a few minutes. Mailforge is also cost-efficient since you spend per mailbox ~3 times less than with Gmail."
– Danny Goff, Director of Sales, Propeller

Tools like Warmforge simplify the warm-up process. Connect each mailbox and use it to send and reply to simulated conversations for 2–4 weeks before launching full campaigns. Keep warm-up activities running continuously across all mailboxes, rotating domains to maintain reputation.

Choosing the Right Infrastructure

Once you’ve determined your sending volume and safety thresholds, it’s time to pick the infrastructure that fits your needs. Your choice should reflect your volume, budget, and level of control required.

• Mailforge: A shared infrastructure solution ideal for agencies, startups, and mid-market businesses. It’s optimized for cold outreach, offering automated DNS setup (DMARC, SPF, DKIM), bulk updates, and premium deliverability. Setup takes just 5 minutes, and you can scale quickly with minimal technical expertise.
• Infraforge: Designed for enterprises with strict compliance needs, this private infrastructure offers dedicated IPs, multi-IP provisioning, API access, and white-label options. It provides complete control over the sending environment but requires a higher investment and technical resources.
• Primeforge: This solution provides Google Workspace or Microsoft 365 mailboxes with US-based IPs, combining the reliability of mainstream providers with enhanced deliverability. It’s a great middle ground for businesses that want the familiarity of Google or Microsoft but need better performance for cold outreach.

Here’s a quick comparison:

Feature	Mailforge	Infraforge	Primeforge
Infrastructure Type	Shared IP pool	Private dedicated IPs	Google/Microsoft with US IPs
Setup Speed	5 minutes	Hours to days	Minutes
Best For	Agencies, startups, mid-market	Enterprises, strict compliance	Businesses wanting Google/MS ecosystem
Technical Expertise Required	Minimal	High	Minimal to moderate
Automated DNS Setup	Yes	Yes	Yes

For most high-volume cold email campaigns, Mailforge is the go-to option. It’s purpose-built for cold outreach, offering unlimited mailboxes and cost-effective scaling. As Isabella L., Founder of Let’s Fearlessly Grow, explains:

"Operating in a high-growth startup environment requires speed, scalability, and operational efficiency. We needed to build an outbound motion that didn't break as we scaled - and Mailforge gave us that foundation."
– Isabella L., Founder, Let's Fearlessly Grow

If you’re an agency handling multiple clients, Mailforge allows you to create separate workspaces for each client in minutes, ensuring domain isolation and protecting each client’s reputation.

Step-by-Step Multi-Workspace Setup

Creating a multi-workspace system requires careful organization and automation. The process involves logically managing domains and mailboxes, automating technical setups, and configuring authentication records efficiently. Below, we'll guide you through each step - from assigning domains to workspaces to setting up fully authenticated, ready-to-use mailboxes.

Organizing Domains and Mailboxes Across Workspaces

Start by defining each workspace based on its purpose - whether it's for a brand, client, or campaign. This clarity ensures every domain and mailbox is assigned to one specific workspace, avoiding confusion and safeguarding your sender reputation.

For agencies, it’s a good idea to dedicate one workspace per client to keep their domains separate and prevent reputational risks from overlapping. In-house teams can organize workspaces by brand, product line, or campaign type. For instance, if you manage outbound campaigns for three products, you might create workspaces like "Product A – Outbound", "Product B – Outbound", and "Product C – Outbound."

Assign each domain to a specific workspace, ensuring every domain has a clear "home." Keep track of these assignments using a central inventory, like a spreadsheet or internal tool, that includes information such as:

• Domain name
• Workspace identifier
• Purpose (e.g., cold outreach, warm marketing, transactional)
• DNS provider
• Connected sending tools
• Status (e.g., active, warming, paused, retired)

This inventory serves as your go-to reference, helping avoid accidental misuse of domains. Apply consistent naming conventions to identify workspaces, domains, and mailboxes. For cold outreach, use alternate domains instead of your primary one. For example, if your main domain is acme.com, create variations like acme-mail.com, tryacme.co, or getacme.io. Similarly, use role-based mailbox names for scalability, such as alex@acme-mail.com, alex.1@acme-mail.com, or sales.17@getacme.io.

Make sure to clearly define which campaigns belong to which workspace. Keep cold outreach traffic separate from high-value transactional or customer emails. Enforce a strict "no cross-use" rule to ensure domains registered to one workspace aren't used in another without proper authorization.

Once your workspaces are organized, you’re ready to set them up with Mailforge.

Setting Up Domains and Mailboxes with Mailforge

Mailforge simplifies and speeds up technical tasks, letting you set up hundreds of authenticated mailboxes in just minutes. Here’s how to do it:

1. Create or select a workspace in Mailforge. If you’re setting up a new client or campaign, create a workspace with a descriptive name like "Client A – Cold Outreach" or "Product Launch – Q1 2026." Mailforge supports multiple workspaces, and you can move domains or mailboxes between them as needed.
2. Add domains to the workspace. You can add domains individually or import them in bulk if you’ve already purchased several. Mailforge also offers domain registration directly within the platform (e.g., five .com domains for $70/year). Each domain is tied to its workspace, reducing the risk of overlap or mismanagement.
3. Provision mailboxes in bulk. Using Mailforge’s bulk provisioning feature, you can create dozens or even hundreds of accounts at once - saving hours of manual work. For example, you can generate mailboxes like outbound01@domain.com through outbound50@domain.com in minutes. Plans start at $30/month for 10 mailboxes ($25/month with annual billing).
4. Enable SSL and domain masking. This feature ensures your tracked links and branded subdomains (e.g., links.brand-domain.com) are served over HTTPS, improving security and deliverability. SSL and masking cost $2 per domain per month (or $6 per domain annually).
5. Connect mailboxes to your sending tools. Mailforge integrates with popular platforms like Salesforge, CRMs, and other email tools. Use the IMAP/SMTP credentials or API keys provided by Mailforge to link each mailbox. You can also tag domains and mailboxes by campaign, region, or sender for better organization and reporting.

With Mailforge, what used to take hours - like setting up DKIM and SPF records - can now be done in minutes. As Danny Goff, Director of Sales at Propeller, puts it:

"Procedures that usually took hours (setting DKIM, SPF, etc. records) for multiple domains, now take a few minutes. Mailforge is also cost-efficient since you spend per mailbox ~3 times less than with Gmail."

Mailforge’s infrastructure is tailored for cold outreach, using a shared IP pool that supports millions of businesses. This setup ensures high deliverability without risking the reputation of individual domains.

Next, you'll secure your domains with automated DNS and authentication configurations.

Configuring DNS and Authentication at Scale

Once your mailboxes are set up, the next step is securing them with DNS and authentication settings. Manually configuring SPF, DKIM, and DMARC for dozens - or even hundreds - of domains can be tedious and prone to errors. A single typo could disrupt email deliverability for an entire domain. Mailforge eliminates these risks with automated DNS setup and bulk update features.

Here’s how Mailforge streamlines DNS and authentication:

• SPF Records: Use the bulk DNS update tool to apply consistent SPF records, authorizing your sending servers.
• DKIM Keys: Automatically generate and manage DKIM keys to ensure every outgoing email is properly signed.
• DMARC Policies: Start with a monitoring-only policy to track potential issues, then gradually enforce stricter rules to protect against spoofing.

This automation not only saves time but also ensures your domains are configured correctly, enhancing email deliverability and security.

Scaling Operations and Maintaining Deliverability

Once your multi-workspace setup is in place, the next challenge is scaling your email operations without compromising deliverability. Growing your email volume requires a careful balance of strategic distribution, meticulous monitoring, and gradual reputation building. Tools like Mailforge and Warmforge are designed to help you manage these processes efficiently.

Distributing Sending Volume Across Workspaces

To minimize risks, it’s essential to distribute your email volume evenly. Limit each mailbox to sending 30–70 emails per day to avoid triggering spam filters. For example, if your goal is to send 5,000 cold emails daily, you’ll need about 70–170 mailboxes spread across multiple domains and workspaces.

At the domain level, avoid overloading any single domain with thousands of daily emails. Instead, cap each domain at a few hundred emails per day and add more domains as you scale. Organizing workspaces by product or region can help isolate reputation risks. This way, if one workspace faces issues like spam complaints or blocks, the impact stays contained and doesn’t spread across your entire operation.

Timing is also critical. Schedule your sends during peak U.S. business hours (9:00 a.m.–4:00 p.m. local time) and stagger them across hours and workspaces. This prevents sudden spikes in email volume, which could raise red flags with providers.

Mailforge makes this distribution process seamless. Its shared IP pool spreads individual mailbox activity across millions of businesses, reducing the risk of overloading any single IP. You can create multiple workspaces to manage different projects and easily move domains and mailboxes as needed. Mailforge even offers a calculator to help you determine the optimal number of domains and mailboxes for your desired email volume, ensuring you have the resources to scale safely.

Consistent performance tracking is key to making informed decisions as you scale.

Monitoring Performance and Reputation Metrics

When it comes to scaling email operations, visibility into performance metrics is non-negotiable. Without proper monitoring, it’s easy for small issues to spiral into major problems.

Here are the metrics you should track daily at the workspace and domain level:

• Send volume across workspaces, domains, and mailboxes
• Hard and soft bounce rates
• Spam complaints and unsubscribe rates
• Open rates, reply rates, and click-through rates for each campaign
• Delivery errors segmented by provider (e.g., Gmail, Outlook)

For strategic planning, review these metrics weekly:

• Domain reputation using tools like Google Postmaster Tools
• IP reputation (if you’re using dedicated IPs)
• Spam folder placement tests with seed lists for major providers
• Engagement trends based on factors like industry, region, or list source

Set clear thresholds to guide your scaling decisions:

• Soft warning thresholds (investigate and pause scaling):
  • Hard bounce rates exceeding 3–5%
  • Spam complaint rates above 0.1–0.2%
  • Open rates dropping significantly below baseline for multiple days
• Critical thresholds (halt sending immediately):
  • Hard bounce rates over 8–10%
  • Spam complaint rates above 0.3–0.5%
  • Sudden blocks from Gmail or Microsoft
  • Blacklist hits on key Realtime Blackhole Lists (RBLs)

When metrics are healthy, gradually increase your volume by 10–20% weekly for that workspace or domain. If trends are mixed or declining, focus on improving list quality and content before attempting to scale further.

To keep everything organized, centralize reporting so you can roll up mailbox-level stats into domain- and workspace-level dashboards. Use consistent tagging for campaigns and unified naming conventions for workspaces and domains (e.g., US-Outbound-01, US-Outbound-02). This makes it easier to compare performance across different segments. Set up automated alerts via email or Slack to notify you if bounce or complaint thresholds are breached.

Maintain a log of DNS configuration dates (SPF, DKIM, DMARC setups) and any major reputation events by workspace. This helps you identify patterns and understand how changes impact deliverability.

A daily "deliverability standup" meeting can be invaluable. During this meeting, your team can review key metrics and decide where to increase, hold, or decrease volume. Weekly reviews allow you to plan capacity for the coming week, identifying which workspaces are ready to scale and which need attention.

Once your metrics are stable, the next step is preparing new mailboxes for production-level sends with Warmforge.

Using Warmforge for Email Warm-Up

Launching new mailboxes at full volume right away is a recipe for disaster. Without a positive sending history, your emails are likely to end up in spam folders - or worse, get blocked entirely. That’s where Warmforge comes in.

Warm-up is the process of gradually building a mailbox’s reputation by sending low-volume, engagement-focused emails. Warmforge automates this process by simulating real engagement - like opens, replies, and spam removals - across a distributed network of inboxes. This creates a positive sending history, allowing you to scale safely.

Here’s a typical warm-up schedule for new U.S.-focused cold email domains:

• Week 1: Send 5–10 emails per day using Warmforge’s warm-up sequences. Focus on achieving high open and reply rates with zero bounces or complaints.
• Week 2: Increase to 15–30 emails per day while continuing warm-up activity. If metrics remain healthy, introduce a small number of real cold outreach emails (5–10 per day) to highly targeted leads.
• Weeks 3–4: Gradually shift from mostly warm-up emails to mostly real outreach. Increase total volume by 10–20% every few days, as long as bounce rates stay below 3% and spam complaints remain under 0.1%. By the end of week four, the mailbox should be ready for full-scale production.

Warmforge allows you to manage warm-up profiles by workspace and domain. This ensures that each workspace has a pool of mailboxes ready to handle your planned daily volumes. It’s especially useful in multi-workspace setups where you’re constantly adding new domains and mailboxes to support growth.

Best Practices for Multi-Workspace Management

Managing a multi-workspace email system effectively requires a blend of consistent processes, clear governance, and smart automation. These practices ensure your operations stay efficient and scalable.

Creating Standard Operating Procedures

Standard operating procedures (SOPs) are the backbone of a well-oiled multi-workspace system. They help ensure everyone follows the same steps, minimizing errors and protecting email deliverability.

Start with a detailed domain and mailbox onboarding process. This should cover everything from purchasing domains to getting them ready for production. Include steps like setting up DNS records (SPF, DKIM, DMARC), configuring SSL, establishing tracking, creating mailboxes with standardized names, setting sender identity rules (e.g., from-names, signatures, reply handling), and scheduling mandatory warm-ups. Assign specific tasks, tools (such as Mailforge for bulk provisioning), and checklists with clear deadlines to ensure smooth execution. These SOPs should align with your automated processes to maintain consistency in high-volume email outreach.

Equally important are monitoring and escalation procedures. Set up daily or automated checks for key metrics like bounce rates, spam complaints, open rates, click rates, and domain reputation. Define clear thresholds that prompt action. For instance, if hard bounce rates exceed 5% or spam complaints go over 0.3%, sending from affected mailboxes should stop immediately. Develop a tiered response plan, such as pausing mailboxes, reducing sending volume, rotating domains, or refreshing lists, depending on the severity of the issue.

Your SOPs should also include root-cause analysis steps. This ensures your team doesn’t just react to problems but understands their causes. For example, investigate list sources, analyze content for spam triggers, or review recent DNS changes. Document protocols for retiring domains, re-warming mailboxes, and logging changes to prevent recurring issues.

For efficient workspace management, establish clear rules for mapping domains to workspaces - whether by client, region, brand, or campaign type. Maintain a centralized inventory to track domain ownership and prevent confusion. This also helps isolate and address reputation issues when they arise.

Finally, define decommissioning processes for domains and mailboxes that are no longer in use. Outline steps to safely park domains, archive data, and remove them from active rotation without disrupting other workspaces.

Managing Access and Governance

Strong governance and role-based access are crucial for maintaining security, compliance, and accountability in a growing multi-workspace system.

Implement a three-tier access structure:

• Admins: Handle workspace creation, domain connections, and global DNS/authentication settings.
• Campaign Managers: Manage sequences and assign mailboxes but cannot alter global DNS or authentication settings.
• Analysts/Clients: Have read-only access to performance dashboards and reports.

Within each workspace, follow the principle of least privilege. Restrict domain ownership and DNS changes to a trusted group, such as your infrastructure or DevOps team. Centralize mailbox management to prevent campaign managers from creating infrastructure independently. Assign API and integration key management to technical experts who understand the risks.

Create clear governance policies for requesting new domains or workspaces. For example, require joint approval from marketing and security teams before provisioning new infrastructure. Establish naming conventions, approved registrar lists, and privacy standards. To prevent sprawl, set limits on the number of domains or mailboxes per client or brand.

Prohibit "shadow" infrastructure - unapproved domains or mailboxes that bypass standard processes. Ensure all domains and mailboxes are registered in a central inventory with details about their purpose, owner, and assigned workspace.

Address compliance requirements by ensuring adherence to regulations like CAN-SPAM, GDPR, and CCPA. Schedule regular reviews to identify and decommission unused or non-compliant infrastructure.

Enable and routinely review activity logs that track changes to domains, DNS records, and sending limits. This transparency supports audits and helps resolve questions about configuration changes. For instance, a U.S.-based email agency might restrict bulk operations to a small operations team while allowing account managers to monitor metrics and adjust campaigns.

When combined with SOPs and automation, these governance measures create a solid foundation for managing your system effectively.

Automating Routine Tasks with Mailforge

As the number of workspaces, domains, and mailboxes grows, manual processes quickly become unmanageable. Automation is the key to scaling without adding unnecessary overhead.

Mailforge simplifies multi-workspace management by enabling you to create and manage hundreds or thousands of domains and mailboxes in minutes. Instead of configuring each domain manually, you can use templates for mailbox naming, signatures, and sending limits, applying them across entire workspaces at once.

The platform’s automated DNS setup handles SPF, DKIM, DMARC, and custom tracking configurations automatically. This eliminates errors and drastically speeds up the process. What might take over 24 hours manually can be completed in about 30 minutes with Mailforge, thanks to pre-configured templates.

Mailforge also supports bulk DNS updates, which are invaluable when updating authentication records, adding tracking domains, or modifying SPF includes across numerous domains. These updates can be executed with just a few clicks, ensuring consistency and reducing maintenance time.

Store your standard SPF, DKIM, DMARC, and tracking configurations as reusable templates. This way, when onboarding a new client or launching a campaign, you can deploy proven configurations instead of starting from scratch. Always test template changes on a small group of domains before rolling them out system-wide to catch potential issues early.

The platform’s domain transferring feature makes it easy to move domains between workspaces. Whether expanding a client’s campaign or consolidating smaller workspaces, you can transfer domains and mailboxes without manual reconfiguration.

Mailforge’s multiple workspaces feature allows you to organize infrastructure by client, project, or brand while maintaining centralized control. For example, a U.S.-based email agency could use this feature to manage dozens of client workspaces with a small operations team. The workflow might involve requesting approved domains, bulk-creating mailboxes in Mailforge, starting automated warm-ups, and gradually increasing daily sends with per-mailbox limits.

To fully integrate Mailforge into your SOPs, designate it as the go-to tool for provisioning domains, configuring DNS, and transferring domains. Limit access to bulk automation features to admins, and ensure all bulk operations are logged and approved. For large-scale changes, such as mass DNS updates, schedule them during low-traffic periods (evenings or weekends in U.S. time zones) to minimize disruptions. After changes, run test campaigns to confirm everything is functioning correctly before resuming full operations.

Conclusion and Key Takeaways

Building a reliable multi-workspace email infrastructure hinges on thoughtful planning, scalable automation, and vigilant performance tracking. Each piece is essential to ensure smooth operations and maintain deliverability, even at high volumes.

Start by planning ahead - look 12–24 months into the future. Estimate your monthly email volume and figure out how many workspaces you'll need to distribute the load effectively. To protect your sender reputation during unexpected spikes, keep each workspace running at 30–50% below its maximum capacity. This forward-thinking approach lays the groundwork for seamless automation and effective monitoring.

Automation is a game-changer when it comes to saving time. Tasks that once took weeks, like DNS setup, can now be completed in minutes. Tools like Mailforge are a prime example. Danny Goff, Director of Sales at Propeller, shared his experience:

"Procedures that usually took hours (setting DKIM, SPF, etc. records) for multiple domains, now take only a few minutes using Mailforge. Mailforge is also cost-efficient since you spend per mailbox ~3 times less than with Gmail." – Danny Goff, Director of Sales, Propeller

To safeguard your sender reputation, isolate domains across workspaces. This way, if one domain encounters issues, it won’t affect the others. Assign each domain to its own workspace and set up the four essential DNS records - MX, SPF, DKIM, and DMARC - immediately after acquiring new domains.

Monitoring and governance are critical for long-term success. Keep an eye on key metrics like bounce rates (aim for under 3%), complaint rates (keep below 0.1%), and inbox placement rates (target above 95%). To avoid disruptions, implement role-based access control: let admins handle infrastructure settings, campaign managers oversee sequences, and analysts review performance data.

Managing costs efficiently is just as important as scaling your system. Mailforge offers competitive pricing, charging $2–$3 per mailbox per month. For instance, a 200-mailbox setup costs $484 monthly, which is far more economical than many other providers.

Scaling requires a gradual approach. Start new workspaces and domains at just 10–20% of your target volume for the first 2–4 weeks, keeping a close watch on metrics. Services like Warmforge can help with email warm-ups, ensuring your reputation builds steadily before launching full-scale campaigns. Isabella L., Founder of Let’s Fearlessly Grow, summed it up well:

"Operating in a high-growth startup environment requires speed, scalability, and operational efficiency. We needed to build an outbound motion that didn't break as we scaled - and Mailforge gave us that foundation." – Isabella L., Founder, Let’s Fearlessly Grow

FAQs

How do I figure out the right number of domains and mailboxes for my high-volume email campaigns?

When planning the number of domains and mailboxes for your email campaigns, it’s important to weigh factors like how many contacts you’ll reach each month and how many emails each recipient will receive. Tools like Mailforge make this easier with a built-in calculator. This handy feature takes these variables into account, helping you adjust your setup for smooth scaling while keeping deliverability intact.

With the calculator, you can match your email infrastructure to your campaign needs - whether you're sending out hundreds or managing thousands of emails daily. This approach helps maintain the effectiveness of your outreach without putting too much strain on any single domain or mailbox.

What are the risks of not using a multi-workspace setup for high-volume email campaigns?

Not having a multi-workspace setup for handling high-volume email campaigns can create a host of problems. One major issue is email deliverability. When you send a large number of emails from a single domain or workspace, you increase the chances of being flagged as spam. This not only hurts your sender reputation but also makes it less likely that your emails will land in your recipients' inboxes.

On top of that, managing a high volume of emails without multiple workspaces can quickly become chaotic and inefficient. It makes it harder to scale campaigns, organize workflows, and stick to email-sending best practices. By using a well-structured multi-workspace system, you can streamline your processes, boost deliverability rates, and scale your campaigns more effectively.

How does Mailforge simplify DNS setup, and why is this important for managing multiple domains?

Mailforge takes the hassle out of DNS setup by automatically configuring DKIM, DMARC, and SPF records. These settings follow established industry standards, ensuring your domains are authenticated correctly for email sending. The result? Better email deliverability and a lower chance of your messages landing in spam folders.

By managing the technical details for you, Mailforge not only saves time but also minimizes the risk of errors. Whether you’re working with a handful of domains or managing thousands, this feature makes the process seamless. Best of all, it’s included in your subscription, so you can concentrate on growing your email campaigns without the headache of domain upkeep.

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