How this page was made. Every price and claim below was read from each vendor's own pages on 19 September 2026 and is linked to its source; where a vendor does not publish a figure we say so. emailcampaign.ai is one of the alternatives listed and we say where it fits and where it does not. Prices change; check the linked pages before buying.
Mailforge sells cold email mailboxes on its own shared-IP SMTP infrastructure at $3 a slot a month billed yearly, with a ten-slot minimum and warm-up sold separately through Warmforge. It is the cheapest way to put a lot of addresses behind a sequencer. People move away from it for three reasons: they want mail to come from Google or Microsoft rather than a pooled IP, they want warm-up in the price, or they want to own the domains and accounts outright.
Why people look for a Mailforge alternative
- Shared IP pools mean your placement depends on neighbours you did not choose; Reddit threads attribute spam-folder streaks to the pool, and one buyer flagged zero out-of-office replies after 500 sends as the sign that nothing was landing (source)
- Warm-up is a second subscription (Warmforge, $10 a mailbox a month billed quarterly), so the real price per warmed mailbox is about $13, not $3 (source)
- Not Google Workspace or Microsoft 365: receivers that trust provider reputation see an unknown SMTP source instead (source)
- Annual billing and a ten-slot minimum front-load the cost for a small team (source)
The alternatives at a glance
| Tool | Starting price | Provisions mailboxes and domains | Warm-up | White-label |
|---|---|---|---|---|
| Mailforge | $3 per mailbox a month billed yearly, minimum 10 slots | Yes: its own shared-IP SMTP mailboxes and domains; not Google Workspace or Microsoft 365 | Not included; Warmforge sold separately at $10 a mailbox a month billed quarterly | None found (Infraforge, its sibling, has a reseller programme) |
| Infraforge | $4 per mailbox a month billed yearly, minimum 10 slots; dedicated IP $99 a month billed quarterly | Yes: dedicated-IP SMTP mailboxes and domains | Not included | Reseller programme: 20 percent revenue share, up to three-year term |
| Zapmail | $39 a month for 10 mailboxes, then $3.50 each; hero price 'from $2.50 a mailbox' on annual | Yes: Google Workspace and Microsoft 365 mailboxes; domains $13 to $14 a year | No ongoing warm-up; pre-warmed mailboxes sold separately, maintained for twelve months, not renewable | None; affiliate programme at 10 percent |
| Premium Inboxes | $3.50 an inbox a month up to 249 inboxes; $3.00 from 250; $2.80 from 1,250 | Yes: Google Workspace and Microsoft 365 inboxes, uploaded into Smartlead or Instantly for you; no domains sold | They start the warm-up for you; no detail published | None |
| Primeforge | $4.50 per mailbox slot a month billed yearly, minimum 10 slots | Yes: Google Workspace and Microsoft 365 mailboxes and domains | Not included; Warmforge separate | Via the Salesforge reseller programme |
| Saleshandy | $34 a month annual ($41 monthly) for 2,000 prospects and 6,000 emails | Yes: Google Workspace, Microsoft 365 and Azure mailboxes, pre-set with SPF, DKIM, DMARC and a tracking domain | Included through its partner TrulyInbox | Scale plan and above ($149 a month annual): custom domain and logos |
| emailcampaign.ai | Free 14-day trial; Basic $39 a month; Pro $94 a month | Yes: domains (about $12 a year), Google Workspace seats ($8.40 a month), Microsoft 365 seats at Microsoft's rate, or self-hosted servers from $39 a month; you own the domains and accounts | Included, unlimited, with a maintenance level after the ramp; never reaches your inbox | Yes: a complete webmail and admin console on the client's own domain, plus dashboard branding |
1. Infraforge · Mailforge's sibling with dedicated IPs and an API.
| Price | $4 per mailbox a month billed yearly, minimum 10 slots; dedicated IP $99 a month billed quarterly |
| Model | Per mailbox slot plus per IP; .com domains $14 a year; no free trial |
| Provisioning | Yes: dedicated-IP SMTP mailboxes and domains |
| DNS | Automatic DKIM, DMARC and SPF, described as ready in five minutes |
| Warm-up | Not included |
| White-label | Reseller programme: 20 percent revenue share, up to three-year term |
| Placement test | None found |
| Reviews | G2 about 4.7 from about 51 reviews (count from third parties); Trustpilot 3.4 from 7 |
Best for: Senders who want an IP they control without running a server
Watch out for: One published comparison reports private IPs performing worse than the shared pool for that user; a fresh dedicated IP needs its own warm-up
Sources: Infraforge pricing · Reseller programme
2. Zapmail · Google Workspace and Microsoft 365 mailboxes sold in bundles, with a second-year price rise.
| Price | $39 a month for 10 mailboxes, then $3.50 each; hero price 'from $2.50 a mailbox' on annual |
| Model | Bundles of 10, 30 or 100; after the first year mailboxes rise to $6, $5.50 or $5 each plus base fees of $59, $169 or $499; payments are not refundable |
| Provisioning | Yes: Google Workspace and Microsoft 365 mailboxes; domains $13 to $14 a year |
| DNS | SPF, DKIM, DMARC and tracking domains set up automatically |
| Warm-up | No ongoing warm-up; pre-warmed mailboxes sold separately, maintained for twelve months, not renewable |
| White-label | None; affiliate programme at 10 percent |
| Placement test | None |
| Reviews | G2 4.3 from 6 reviews (third-party count); Trustpilot 4.5 from 87 |
Best for: Buying provider mailboxes quickly in bulk for a sequencer you already run
Watch out for: The year-two price step is easy to miss; reviews report India-based IPs despite US and EU marketing, and mailboxes burning out within one to two weeks
Sources: Zapmail · Year-two pricing · Review via Infraforge
3. Premium Inboxes · A reseller that hand-configures Google Workspace and Microsoft 365 inboxes on domains you bring.
| Price | $3.50 an inbox a month up to 249 inboxes; $3.00 from 250; $2.80 from 1,250 |
| Model | Per inbox, no monthly commitment, unlimited replacement inboxes; you bring the domains |
| Provisioning | Yes: Google Workspace and Microsoft 365 inboxes, uploaded into Smartlead or Instantly for you; no domains sold |
| DNS | Engineers configure and verify SPF, DKIM and DMARC by hand |
| Warm-up | They start the warm-up for you; no detail published |
| White-label | None |
| Placement test | None |
| Reviews | Trustpilot 5.0 from 494 reviews; G2 count from third parties only |
Best for: Agencies that want a human to set up hundreds of inboxes and are happy to bring their own domains
Watch out for: Reviews report Microsoft 365 stability past about 100 inboxes and a strict no-refund policy; per-inbox price is above the cheapest Google resellers
Sources: Pricing · Trustpilot
4. Primeforge · The Salesforge group's Google Workspace and Microsoft 365 provisioning.
| Price | $4.50 per mailbox slot a month billed yearly, minimum 10 slots |
| Model | Per slot; .com domains $14 a year; API; no free trial |
| Provisioning | Yes: Google Workspace and Microsoft 365 mailboxes and domains |
| DNS | Automatic DKIM, DMARC and SPF |
| Warm-up | Not included; Warmforge separate |
| White-label | Via the Salesforge reseller programme |
| Placement test | Via Warmforge, from $39 a month |
| Reviews | Reviewed under the Salesforge seller aggregate on G2 (4.6 from 255 across products) |
Best for: Salesforge users who want provider mailboxes inside the same group
Watch out for: Three sibling brands (Salesforge, Mailforge, Infraforge, Primeforge) confuse buyers, as G2 reviewers note
Sources: Primeforge pricing
5. Saleshandy · Outreach software with unusually cheap provider mailboxes attached.
| Price | $34 a month annual ($41 monthly) for 2,000 prospects and 6,000 emails |
| Model | Plan by prospects and emails; unlimited email accounts and warm-up mailboxes; infrastructure add-on at $2.99 to $3.99 a mailbox a month plus $14 a year per domain |
| Provisioning | Yes: Google Workspace, Microsoft 365 and Azure mailboxes, pre-set with SPF, DKIM, DMARC and a tracking domain |
| DNS | Included with provisioned mailboxes |
| Warm-up | Included through its partner TrulyInbox |
| White-label | Scale plan and above ($149 a month annual): custom domain and logos |
| Placement test | None found |
| Reviews | G2 4.6 from 773; Capterra 4.5 from 126 |
Best for: Price-sensitive teams that want sequencing and mailboxes from one vendor
Watch out for: Reviews mention charges after cancellation, marketing about daily caps, and bugs after releases
Sources: Pricing · Infrastructure
6. emailcampaign.ai · Cold email software that provisions and warms its own infrastructure, with a white-label door for agencies.
| Price | Free 14-day trial; Basic $39 a month; Pro $94 a month |
| Model | Plan by emails per month; unlimited mailboxes and warm-up on every plan; infrastructure at cost plus $5 setup per mailbox |
| Provisioning | Yes: domains (about $12 a year), Google Workspace seats ($8.40 a month), Microsoft 365 seats at Microsoft's rate, or self-hosted servers from $39 a month; you own the domains and accounts |
| DNS | SPF, DKIM (selectors read from the provider), DMARC and postmaster records written through the registrar and shown before they go live |
| Warm-up | Included, unlimited, with a maintenance level after the ramp; never reaches your inbox |
| White-label | Yes: a complete webmail and admin console on the client's own domain, plus dashboard branding |
| Placement test | Yes, per mailbox at Gmail and Outlook |
| Reviews | New listing; reviews being gathered |
Best for: Teams that want the mailboxes, domains, DNS and warm-up done for them behind one approval, and agencies that need a client-branded door
Watch out for: The recommended 8 to 10 sends a day per mailbox means volume comes from fleet size; if you want 100 a day from one mailbox, nothing here will let you
Sources: Pricing · Infrastructure
How to choose
- Decide who owns the domains and accounts. Some vendors keep ownership or administrator access; if you may leave, you want yours in your own name.
- Count the year-two price, not the launch price. Several infrastructure vendors step prices up after twelve months or sell pre-warmed mailboxes that expire.
- Ask what happens when a domain burns. Replacement policy, and whether the vendor pauses the sender or quietly suppresses your recipients.
- Check the review sites for cancellation stories. They are the most consistent complaint in this category across vendors.
- Send at 8 to 10 a day per mailbox whatever you buy. No vendor's mailbox survives 100 a day to strangers.
Questions, answered straight
- Is Mailforge the same as Infraforge and Salesforge?
- They are sibling products of one company in Tallinn: Salesforge is the sequencer, Mailforge sells shared-IP mailboxes, Infraforge sells dedicated-IP mailboxes, Primeforge sells Google Workspace and Microsoft 365 mailboxes, and Warmforge is the warm-up. G2 reviewers note the confusion between them.
- What is the cheapest Mailforge alternative that includes warm-up?
- Saleshandy bundles provider mailboxes at $2.99 to $3.99 a month with warm-up included in its outreach plans from $34 a month. emailcampaign.ai includes unlimited warm-up on every plan, including the free trial, with Google Workspace seats at Google's own $8.40 rate and self-hosted servers from $39 a month for many mailboxes.
- Should I move from shared IPs to Google Workspace mailboxes?
- If your prospects are on Gmail or Google Workspace, usually yes: provider reputation does the heavy lifting. Keep volume at 8 to 10 a day per mailbox and warm for two to three weeks before campaigns.
Published 19 September 2026. Updated 19 September 2026. Written by the team that runs the infrastructure; numbers come from the platform's own provisioning and sending, and from the providers' published documentation at the time of writing.