Can I use both with SendKit?

Yes. Both Zapmail and Mailforge integrate with SendKit for AI warmup, sequences, and deliverability monitoring.

Which has better inbox placement?

Zapmail Google Workspace mailboxes generally have better inbox placement than Mailforge SMTP on shared IPs. Google Workspace benefits from inherent trust signals with ISPs.

Is there a cheaper way to get Google Workspace mailboxes?

At comparable tiers, yes. InboxKit ships Professional ($31 for 10 mailboxes, $3.10 extras), Agency ($81 for 30, $2.70 extras), and Enterprise ($250 for 100, $2.50 extras). Zapmail charges $3.00-$3.90 per mailbox plus a base subscription. InboxKit is cheaper at every tier sweet spot, with Email Warmup as a separate $3/mailbox add-on.

Zapmail vs Mailforge: GWS vs SMTP

We compared Zapmail and Mailforge on pricing, mailbox types, and features. Google Workspace vs SMTP for cold email infrastructure in 2026.

By Akshay Prasath

2 min readUpdated Mar 2026

The Verdict

This is a quality-vs-price comparison. Zapmail provisions real Google Workspace mailboxes, ships them pre-warmed, and adds AI-assisted domain and mailbox naming. The trade-off is the bill: $2.99-$3.90 per mailbox effective rate, on the high end of this market.

Mailforge ships SMTP relays on shared IPs at $2-$3 with no warmup and no AI tooling. Teams that already trust their own warmup playbook and have the patience for SMTP setup can save real money on Mailforge. Teams that want Google's native deliverability and zero setup time pay the Zapmail premium and skip the headaches.

Zapmail vs Mailforge

Feature	Zapmail	Mailforge
Pricing
Price per Mailbox	$3.00-$3.90/mo Google Workspace with tiered pricing	$2-$3/mo SMTP shared IP mailboxes
Cost for 100 Mailboxes	$299/mo Pro plan with 100 mailboxes included	$200-$300/mo 100 x $2-$3
Infrastructure
Mailbox Type	Google Workspace Exclusively Google Workspace	SMTP only SMTP on shared IPs
Deliverability
Pre-warmed Accounts	Yes Accounts come pre-warmed	No Warmup from external tool needed
AI Tools
AI Domain Generator	Yes AI suggests spam-safe domain names	No Manual domain selection
Features
Domain Masking	Not specified Not mentioned	Yes SSL and domain masking
Multiple Workspaces	Workspace isolation Workspace-level isolation per domain	Yes Multiple workspace support
Bulk DNS Updates	Not specified Not mentioned	Yes Automated bulk DNS updates
Scale
Scale Track Record	1M+ mailboxes 1M+ set up, 330K+ domains	10K+ businesses 10,000+ businesses

Google Workspace vs SMTP

Zapmail provides Google Workspace mailboxes. Mailforge provides SMTP mailboxes on shared IPs. This is the core difference that drives everything else.

Google Workspace mailboxes benefit from the trust Google has built with ISPs. They tend to land in the inbox more consistently, especially for new domains. SMTP mailboxes are cheaper but rely entirely on IP reputation, which is shared with other Mailforge users.

For cold email specifically, Google Workspace is generally the safer choice for deliverability. SMTP is the better choice for cost efficiency at high volume.

Key takeaways

Zapmail: Google Workspace with inherent trust signals
Mailforge: SMTP on shared IPs, reputation depends on pool
Google Workspace is safer for deliverability
SMTP is cheaper for high-volume teams

Zapmail vs Mailforge: Which One Fits Your Use Case

Choose Zapmail if you want Google Workspace deliverability with AI-assisted setup and pre-warmed accounts. The higher cost per mailbox ($3.00-$3.90) buys better default inbox placement. Choose Mailforge if cost is the priority and you are running a large mailbox operation where $1 per mailbox savings adds up.

Pair with SendKit for warmup and monitoring. For teams that want Google Workspace at a lower per-mailbox cost, InboxKit ships three tiers: Professional at $31/mo for 10 mailbox slots, Agency at $81/mo for 30 slots, Enterprise at $250/mo for 100 slots. The verifier, placement testing, and blacklist checker are bundled in base tiers; Email Warmup is +$3/mailbox.

Key takeaways

Zapmail: Google Workspace quality with AI tools
Mailforge: cheapest SMTP for high-volume operations
InboxKit: Google Workspace at $2.50 with deliverability tools

Pros & Cons

Zapmail

Strengths

Google Workspace mailboxes with strong deliverability
AI domain generator and mailbox namer
Pre-warmed accounts for immediate use
1M+ mailboxes set up, 330K+ domains
4.5 TrustPilot rating

Limitations

Higher per-mailbox cost ($3.00-$3.90)
Base monthly fees on top of per-mailbox charges
Google Workspace only, no SMTP option

Mailforge

Strengths

Lower per-mailbox cost at $2-$3/mo
SSL and domain masking
Bulk DNS updates and domain transferring
Salesforge ecosystem with Infraforge upgrade path

Limitations

SMTP on shared IPs only
No pre-warmed accounts or AI tools
No Google Workspace option
No built-in deliverability tools

Keep reading

frequently asked questions

Got questions? We've got answers.

Zapmail offers better mailbox quality (Google Workspace) with AI tools and pre-warmed accounts. Mailforge is cheaper with SMTP on shared IPs. Choose based on whether you prioritize deliverability (Zapmail) or cost (Mailforge).

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