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Zapmail vs Mailforge: Google Workspace vs SMTP
A pricing, mailbox-type, and feature comparison of Zapmail and Mailforge — Google Workspace against SMTP for cold email infrastructure in 2026.
The Verdict
Really, this is a quality-versus-price question. Zapmail provisions genuine Google Workspace mailboxes, ships them pre-warmed, and layers in AI-assisted domain and mailbox naming. The bill reflects it: $2.99-$3.90 per mailbox, near the top of this market.
Mailforge ships SMTP relays on shared IPs at $2-$3, with no warmup and no AI tooling included. Teams that already trust their own warmup process and don't mind SMTP setup can genuinely save money on Mailforge. Teams that want Google's native deliverability and zero setup hassle pay the Zapmail premium and skip the friction.
Zapmail vs Mailforge
| Feature |  Zapmail |  Mailforge |
|---|---|---|
| Pricing | ||
| Price per Mailbox | $3.00-$3.90/mo Google Workspace, priced through tiers. | $2-$3/mo SMTP mailboxes on shared IPs. |
| Cost for 100 Mailboxes | $299/mo The Pro plan includes 100 mailboxes. | $200-$300/mo 100 mailboxes at $2-$3 each. |
| Infrastructure | ||
| Mailbox Type | Google Workspace Google Workspace, and nothing else. | SMTP only SMTP running on shared IPs. |
| Deliverability | ||
| Pre-warmed Accounts | Yes Accounts arrive already warmed up. | No Warmup has to come from an outside tool. |
| AI Tools | ||
| AI Domain Generator | Yes AI suggests domain names built to avoid spam flags. | No Domains are chosen manually. |
| Features | ||
| Domain Masking | Not specified Not mentioned. | Yes Includes SSL and domain masking. |
| Multiple Workspaces | Workspace isolation Isolates each domain at the workspace level. | Yes Supports multiple workspaces. |
| Bulk DNS Updates | Not specified Not mentioned. | Yes Handles bulk DNS updates automatically. |
| Scale | ||
| Scale Track Record | 1M+ mailboxes 1M+ mailboxes set up across 330K+ domains. | 10K+ businesses 10,000+ businesses on the platform. |
Google Workspace vs SMTP
Zapmail gives you Google Workspace mailboxes; Mailforge gives you SMTP mailboxes on shared IPs. That single difference is what drives everything else in this comparison. Google Workspace mailboxes ride on the trust Google has already built with ISPs over time, so they tend to land in the inbox more consistently, especially for newer domains.
SMTP mailboxes cost less but lean entirely on IP reputation, which you're sharing with every other Mailforge customer on that pool. For cold email specifically, Google Workspace is generally the safer bet on deliverability, while SMTP wins on cost efficiency once volume climbs.
Key takeaways
- Zapmail: Google Workspace, carrying built-in trust signals
- Mailforge: SMTP on shared IPs, reputation tied to the pool
- Google Workspace is the safer bet on deliverability
- SMTP is the cheaper path for high-volume teams
Zapmail vs Mailforge: Which One Fits Your Use Case
Go with Zapmail if Google Workspace deliverability, AI-assisted setup, and pre-warmed accounts matter to you — the higher per-mailbox price ($3.00-$3.90) buys better default inbox placement. Go with Mailforge if cost is the deciding factor and you're running a large enough operation that $1 per mailbox in savings genuinely adds up. Pair it with Sendbox for warmup and monitoring.
For Google Workspace at a lower per-mailbox rate, InboxKit is worth a look: Professional at $31/mo for 10 slots, Agency at $81/mo for 30, Enterprise at $250/mo for 100. The verifier, placement testing, and blacklist checker come bundled into every base tier, with Email Warmup priced separately at $3/mailbox.
Key takeaways
- Zapmail: Google Workspace quality plus AI tooling
- Mailforge: the cheapest SMTP option for high-volume operations
- InboxKit: Google Workspace at $2.50 with deliverability tools bundled in
Pros & Cons
Zapmail
Strengths
- Google Workspace mailboxes with strong default deliverability
- AI-driven domain and mailbox naming
- Accounts arrive pre-warmed and ready to use
- 1M+ mailboxes set up across 330K+ domains
- 4.5-star rating on TrustPilot
Limitations
- Costs more per mailbox, at $3.00-$3.90
- A base fee applies on top of the per-mailbox rate
- Google Workspace only, with no SMTP option
Mailforge
Strengths
- Lower per-mailbox cost at $2-$3/mo
- SSL and domain masking included
- Supports bulk DNS updates and domain transfers
- Part of the Salesforge ecosystem, with an upgrade path to Infraforge
Limitations
- SMTP on shared IPs only
- No pre-warmed accounts or AI tooling
- No Google Workspace option
- No native deliverability tooling
Got questions? We've got answers.
Still stuck? Talk to us →Zapmail edges ahead on mailbox quality — Google Workspace, AI tooling, pre-warmed accounts. Mailforge wins on price with SMTP on shared IPs. Pick based on whether deliverability (Zapmail) or cost (Mailforge) matters more to you.
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