5 Platforms To Buy Cheap Inboxes for Cold Email
When you start scaling cold email, the first thing you need isn’t better writing, it’s more inboxes.
A few Gmail accounts can’t handle thousands of emails each week, and buying extra Google or Microsoft seats gets expensive fast..
That’s why experienced senders now build their outreach on dedicated inbox platforms, where mailboxes are authenticated, safe to scale, and cost just a fraction of the usual price.
In this guide, we’ll look at five trusted providers that give you reliable inbox setups for cold email, so you can send more, spend less, and actually reach people who matter.
TL;DR – Best Cheap Inboxes for Cold Email in 2025
- Infraforge – Cheap, fully authenticated, pre-warmed mailboxes with private infrastructure. $3–$4 per mailbox/month.
- Primeforge – Official Google & Microsoft inboxes with brand-name deliverability. $3.5–$4.5 per mailbox/month.
- Mailforge – Budget-friendly mailboxes, ready in minutes. $2–$3 per mailbox/month.
- ScaledMail – Bulk pre-made Google & Microsoft inboxes with white-glove setup.
- MailScale – Instant mailbox generation with deliverability guarantee. $95/month for 50 inboxes.
Set up unlimited, ready-to-send inboxes with Infraforge at the lowest cost.
How Did We Choose The Most Affordable Inbox Providers?
In order to determine the best Cheap inboxes, we considered the following factors:
- Whether the inboxes are verified Google Workspace or Microsoft 365 accounts with US IPs.
- How effectively SPF, DKIM, and DMARC are configured to support strong deliverability.
- If the infrastructure can scale reliably from a few to thousands of inboxes.
- Whether the accounts meet full business compliance standards and stay safe under cold outreach use.
- How quickly are inboxes activated after purchase?
- The level of admin access, automation, and workspace control available for scaling.
- Whether users can bring their own domains, retain control, and migrate inboxes easily.
- The transparency of per-inbox pricing, contract terms, and refund policies for larger deployments.
Best Cheap Inboxes for Cold Email (Quick Summary Table)
To help you compare, here’s a quick breakdown of the five best cheap inbox providers, showing account type, compliance, speed, pricing, and who they’re best for.
Let’s take a closer look at each cheap inbox provider.
1. Infraforge – Best for Cheap, Fully Authenticated Pre-Warmed Mailboxes
Infraforge is a private email infrastructure platform that lets you create and manage your own mailboxes on custom domains.
It provides cheap, fully authenticated, and pre-warmed inboxes designed for cold email, giving you full control over deliverability with automated SPF, DKIM, and DMARC setup.
Key Features of Infraforge Mailboxes
- Automated DNS setup with SPF, DKIM, and DMARC
- Pre-warmed domains and mailboxes that are ready for sending
- Dedicated IPs for private infrastructure
- Bulk DNS updates across domains
- Masterbox dashboard to view all inboxes
- Multi-workspace support
- Infraforge API access
- SSL and domain masking support
- Domain transferring and management
Infraforge Mailbox Pricing
- Starts at $4 per mailbox/month, dropping to $3 per mailbox with higher volumes.
- Minimum buy-in of 10 mailbox slots.
- Example: 5 mailboxes cost about $17/month (yearly billing) or $20/month (quarterly billing).
- Add-ons: Dedicated IPs ($99/month), SSL & domain masking ($2–$6 per domain), Masterbox ($7–$9 per workspace).
Pros:
- Every mailbox already has SPF, DKIM, and DMARC configured..
- The inboxes are pre-warmed, so you can start sending from day one without worrying about spam.
- Dedicated IPs and private servers keep your deliverability strong and consistent.
Cons:
- You need to buy at least 10 mailboxes
- Add-ons like dedicated IPs or SSL increase the total price compared to simpler tools like Mailforge
- It doesn’t offer Google or Microsoft mailboxes
It’s best for agencies and teams that need large-scale cold email infrastructure.
2. Primeforge – Best for Google & Microsoft Mailboxes
Primeforge is a mailbox provider built on official Google Workspace and Microsoft 365 accounts that are optimized for cold email.
Instead of risky reseller accounts, you get official Google and Microsoft inboxes set up with US IPs, DNS records, and even profile customization.
Key Features of Primeforge Mailboxes
- Ready to use Google Workspace and Microsoft 365 mailboxes
- Automated DNS setup for SPF, DKIM, and DMARC
- Verified US IP addresses
- Bulk DNS updates for multiple domains
- ESP matching for better inbox placement
- Profile picture and GIF setup for mailboxes
Primeforge Mailbox Pricing
- $4.5 to $3.5 per mailbox/month, depending on volume.
- Minimum of 10 mailbox slots.
- Example: 5 mailboxes cost about $19/month (yearly billing) or $23/month (monthly billing).
- Domain costs are separate: around $70/year for .com domains.
Pros:
- Setup takes just around 30 minutes
- Since you’re sending from trusted providers like Gmail and Outlook, your emails are more likely to land in the inbox.
- Works well with any outreach tool, so you can plug it in and start sending right away.
Cons:
- You don’t get your own infrastructure; everything runs through Google or Microsoft. Therefore, you can’t manage IPs or make backend changes.
- You can only use Google or Microsoft accounts, not your own custom domains.
- There’s limited control over technical settings like warm-up speed or sender reputation.
Primeforge is the top choice if you want cheap, fully authenticated Google or Microsoft mailboxes with fast setup and strong deliverability.
It’s perfect for agencies and teams that need recognizable ESPs.
3. Mailforge – Best for Budget-Friendly Mailboxes With Quick Setup
Mailforge is a shared email infrastructure platform that lets you create hundreds of cheap inboxes within minutes.
Instead of paying Google or Microsoft prices, you get inboxes created in minutes with SPF, DKIM, and DMARC already set up.
It’s simple, fast, and affordable, making it a popular choice for startups and agencies that need volume without high costs.
Key Features of Mailforge Mailboxe
- Automated DNS setup with SPF, DKIM, and DMARC
- Shared infrastructure optimized for cold email
- Multiple workspace support
- SSL and domain masking options
- Domain transferring and management
- Flexible mailbox slots for easy creation and deletion without extra setup fees
- Bulk DNS update support
- Works with any sending platform, including Salesforge
- 24/7 expert support via chat and Slack
Mailforge Mailbox Pricing
- $3 to $2 per mailbox/month, depending on volume.
- Minimum purchase of 10 mailbox slots.
- Example: 5 mailboxes cost about $13/month (yearly billing) or $15/month (monthly billing).
- Domains are separate: around $70/year per .com domain.
- Add-ons: SSL & domain masking at $2–$6 per domain.
Pros:
- Very affordable, starting around $2 to $3 per mailbox per month.
“Very cheap, and if you have domains in other platforms like Namecheap, you can connect them here to create mailboxes and connect the mailboxes to your sending software.”- TPF, Trustpilot
- All mailboxes come ready with SPF, DKIM, and DMARC, keeping deliverability consistent.
- The slot system makes it easy to replace inboxes anytime without extra cost.
Cons:
- It runs entirely on shared IPs, which means your deliverability can be affected by other users.
- Lacks advanced monitoring tools, so you can’t see when domains start losing reputation.
- No support for Google or Microsoft mailboxes if you want branded accounts.
Mailforge is the best option if you want cheap, fully authenticated mailboxes that are quick to set up and safe for cold outreach.
It’s a practical pick for small to mid-sized teams who want to launch campaigns fast without overspending.
4. ScaledMail – Best for Bulk Google and Microsoft Inboxes
ScaledMail is a managed inbox provider that delivers Google and Microsoft mailboxes in bulk.
Unlike buying accounts one by one, ScaledMail delivers fully configured mailboxes with SPF, DKIM, and DMARC, plus white-glove onboarding to get you live in about 4 days.
Key Features of ScaledMail Mailboxes
- Google, Microsoft, and blended inbox setups
- Advanced DNS configuration with DKIM, DMARC, and SPF
- White-glove onboarding and account management
- Inbox configuration support included
- Optimized for cold email deliverability (Google & Office 365)
- Custom sending volumes for low, medium, and enterprise-scale campaigns
- Supports all major sequencing tools
- Available with private or shared infrastructure, based on plan
ScaledMail Mailbox Pricing
- Plans start at $45/month for 48 SMTP mailboxes.
- Blended setup (Google + Microsoft) costs $79/month for 33 inboxes.
- Google-only plan: $80/month for 20 mailboxes.
- Microsoft-only plan: $120/month for 50 mailboxes.
- Setup time: around 4 days, domains not included.
Pros:
- You get fully ready Google and Microsoft inboxes, saving you from hours of domain setup and verification.
- Their white-glove onboarding takes care of the entire setup, you don’t need to do any technical work.
- Works smoothly with all major cold email tools, so integration is simple.
Cons:
- The setup takes about 4 days, which might feel slow if you need inboxes quickly.
- Once inboxes are delivered, you don’t have access to detailed performance tracking or technical settings.
- You can’t customize much; domains, warm-up schedules, and configurations are mostly handled by their team.
It’s a good fit for agencies managing many clients, though the lack of upfront pricing may be a drawback for smaller teams.
5. MailScale – Best for Fast Mailbox Generation
MailScale is a cold email inbox provider, designed for teams that want cheap, bulk inboxes without spending hours on manual setup.
Instead of buying and configuring domains yourself, you can generate 50+ mailboxes in under a minute, fully authenticated.
Key Features of MailScale Mailboxes
- Supports Google and Outlook-compatible inboxes
- Handles SPF, DKIM, and DMARC setup automatically
- Includes built-in domain purchasing and management
- Provides CSV export of the generated inboxes
MailScale Mailbox Pricing
- $95/month (Business Plan) – includes up to 50 mailboxes and domains.
- Annual billing option saves 20%.
Pros:
- MailScale lets you create 50 or more inboxes in less than a minute, which saves hours of setup time.
- Every inbox is pre-authenticated and optimized for cold email, so you don’t have to worry about deliverability setup.
- Comes with a deliverability guarantee; if performance drops, they’ll fix it or refund you.
- You can buy or add domains directly inside MailScale.
- Works with any cold email sending tool
Cons:
- The starting plan requires at least 50 inboxes, so it’s not ideal for small teams or solo senders.
- You don’t get private infrastructure or dedicated IPs; all inboxes run on a shared setup.
- There’s no visibility into how warm-up or deliverability management actually happens in the background.
- You can’t use Google or Microsoft accounts, which some teams prefer for better trust and branding.
Which Cheap Inbox Provider Should You Choose?
Scaling cold email isn’t about having inboxes; it’s about having the right kind of inboxes. Cheap inboxes only work if they’re safe, authenticated, and built to handle volume without burning your domains.
- Infraforge gives you fully authenticated, pre-warmed inboxes with dedicated IPs and complete DNS control, ideal for scaling outreach with reliability.
- Primeforge provides verified Google and Microsoft 365 business inboxes with automated setup, perfect for teams that want recognizable domains and compliance.
- Mailforge makes it easy to set up hundreds of inboxes fast with shared IP infrastructure, automated DNS, and strong deliverability at scale.
- ScaledMail offers managed Google and Microsoft inbox packages, great for agencies that want ready setups without technical work.
- Mailscale focuses on instant scale — create inboxes in seconds with guaranteed deliverability and seamless integrations.
All five providers sell affordable inboxes, but Infraforge gives you fully authenticated, compliant mailboxes with DNS control at a price that still fits all outreach teams.
👉 Start with Infraforge today and launch cheap, fully authenticated mailboxes in minutes.