Alternatives
Best Mailforge alternatives for cold outbound teams in 2026
August 26, 2026 · 5 min read
Mailforge charges $2-3 per mailbox with a 10-mailbox minimum. Compare 4 Mailforge alternatives for 2026 cold email infrastructure, real pricing included.
How to pick a tool
Mailforge sells cold email mailboxes for $2 to $3 each per month, with a 10-mailbox minimum and $14 domains billed separately. Mailforge is domain and mailbox infrastructure for cold outbound, but shared IP pools, a hard mailbox-slot minimum, and ties to the Salesforge ecosystem push some teams elsewhere. The strongest Mailforge alternatives in 2026 are Infraforge for dedicated IPs, Zapmail for pre-warmed Google Workspace inboxes, and Maildoso for the cheapest per-mailbox rate at scale.
By Rishabh Ambasta, Founder, Modern Inbound.
At a glance
- Zapmail wins if you can't wait out a warmup: its mailboxes ship pre-warmed.
- Maildoso is the runner-up on cost, down to $0.49/mailbox past 1,000 inboxes.
- Infraforge earns its premium only past 20+ mailboxes, where isolated reputation matters.
- Honest reframe: none of these fix a bad list. They just remove infrastructure as the bottleneck.
How do Mailforge alternatives compare on price in 2026?
Mailforge starts at $2-3 per mailbox with a 10-mailbox floor and separate $14 domains. Zapmail and Infraforge sit close on price but add pre-warmed accounts or dedicated IPs. Maildoso undercuts everyone at volume, and Inframail swaps per-seat billing for one flat fee.
- Under 20 mailboxes: shared infrastructure from Mailforge or Zapmail is cheaper.
- Past 40 mailboxes: Inframail's flat fee usually wins on total cost.
| Tool | Starting Price | Best For | Standout Feature |
|---|---|---|---|
| Mailforge | $2-3/mailbox/mo | Teams on the Forge Stack | 10-mailbox minimum, $14 domains billed separately |
| Infraforge | $3-4/mailbox/mo | Isolated sender reputation | Dedicated IP per mailbox, $99/mo add-on |
| Zapmail | $39/mo for 10 mailboxes | Skipping the warmup cycle | Real, pre-warmed Google Workspace accounts |
| Maildoso | $0.49-2.50/mailbox/mo | 300+ mailbox senders | 1,000 mailboxes for $499/mo, self-healing |
| Inframail | $99/mo flat, unlimited | Agencies past 40 inboxes | Unlimited Microsoft 365 inboxes, one flat fee |
1. Infraforge
Slot-based billing means you pay for reserved capacity, not usage, and a dedicated IP add-on runs $99/month, per Infraforge's pricing page. Domains run about $13/year, in line with the category.
Where it falls short: under 20 mailboxes, the dedicated-IP premium rarely pays for itself.
2. Zapmail
Plans scale from $39/month for 10 mailboxes to $299/month for 100, dropping to roughly $2/mailbox on annual billing, per Zapmail's pricing page. Mailboxes export straight into Instantly, Smartlead, and ReachInbox.
Where it falls short: mailboxes are provisioned through India-based Workspace resellers, which some US buyers flag during due diligence.
3. Maildoso
1,000 mailboxes run $499/month, well under what Mailforge or Infraforge charge at the same volume, per Maildoso's pricing page. Self-healing swaps and IP rotation are standard on every tier.
Where it falls short: every mailbox caps at 15 emails a day, so the price assumes tight volume discipline.
4. Inframail
The flat $99/month plan includes one dedicated US IP and 10 domains, per Inframail's pricing page. Add mailboxes without touching the invoice again.
Where it falls short: under 25 mailboxes, you're overpaying versus Mailforge or Maildoso's per-seat rates.
FAQ
Is Mailforge good for cold email infrastructure?
Yes, for teams already using Salesforge's tools and comfortable with a 10-mailbox minimum. It's priced at $2-3 per mailbox but shares IP pools across customers, which some agencies avoid.
What is the cheapest Mailforge alternative in 2026?
Maildoso is cheapest at scale, dropping to $0.49 per mailbox at 1,000 inboxes, per Maildoso's pricing page. At low volume, Mailforge and Zapmail land closer together near $2.50-3.
Which cold email tool has pre-warmed inboxes?
Zapmail sells real Google Workspace mailboxes that arrive already warmed, so campaigns can launch without a multi-week ramp. Mailforge and most others still require a standard warmup cycle.
Do I need dedicated IPs for cold email?
Only past meaningful volume. Below 20 mailboxes, shared infrastructure from Mailforge or Zapmail works fine; above that, Infraforge's dedicated IPs isolate you from other customers' mistakes.
Picking infrastructure is maybe 20% of the outbound problem. If you'd rather hand off the list building, copy, and sending too, that's what Modern Inbound's setup layer does.
Does your message work cold?
Modern Inbound tests 100+ messaging angles on your market and sends you the warm leads. You find out if your offer works before you build a team around it. See how it works.
Outreach built for your business. Yours to keep.
We build and run outreach inside your business for 90 days, then it stays yours. Tell us your offer and your market and we tell you if it fits.
Rishabh AmbastaFounder, Modern Inbound
Runs a research-led cold email agency measured in delivered replies. Before that, outbound for SaaS teams from $1M to $50M ARR. LinkedIn
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