Mailforge vs Maildoso (2026): The Real Shared-IP Infrastructure Comparison

Short version: At small volumes (under 50 mailboxes), Maildoso wins. You get Google Workspace mailboxes via the Combo plans, placement testing every 3 days, self-healing when mailboxes burn, and domain health monitoring: all at the same per-mailbox price Mailforge charges for pure SMTP. At scale volumes (200+ mailboxes), Mailforge becomes cheaper on the pure-SMTP rate, but you lose the Google Workspace option and the built-in monitoring.

	Mailforge	Maildoso
Category	Shared-IP SMTP infrastructure	SMTP + Google Workspace infrastructure
Pricing floor	$2.42/mailbox at 200 slots yearly	$0.80/mailbox at 20,000 slots
Minimum purchase	10 slots	15 mailboxes (Combo) or 30 (SMTP)
Google Workspace	Not available (use Primeforge)	Combo plans: $2.50-$3.00/mo
Microsoft 365	Not available	Not available
Warmup	Warmforge sold separately	Sending cadence recommendations, no bundled warmup tool
Placement testing	None (Heat Score only)	Every 3 days, built-in
Self-healing	No	Yes, 14-day pause and rotate on burned mailboxes
Monitoring	Mailbox Heat Score (basic)	Domain + inbox reputation monitoring
Integrations	Any sending software (no count claimed)	6+ named (Instantly, Smartlead, Saleshandy, Apollo, Lemlist, EmailBizon)
Trust signals	10k+ businesses, 4.9 rating	5,000+ companies, 400k+ mailboxes, 10M+ emails/day, 4.7 G2 (159 reviews)

Mailforge pricing (from mailforge.ai/pricing):

• Minimum: 10 mailbox slots.
• 10 slots monthly: $75/mo ($7.50/mailbox).
• 10 slots yearly: $60/mo ($6/mailbox, paid annually).
• Headline '$2/mailbox' only applies at 200+ mailboxes yearly ($484/mo ÷ 200 = $2.42/mailbox effective).
• Domains: $14/year per .com, separate.
• SSL and domain masking: $2/domain/month optional add-on.

Maildoso pricing (from maildoso.com/pricing):

Combo plans (SMTP + Google Workspace bundled):

• Combo 15: 15 SMTP + 15 Google Workspace = 30 mailboxes at $3/mailbox = $90/mo
• Combo 35: 35 SMTP + 35 Google Workspace = 70 mailboxes at $2.50/mailbox = $175/mo
• Combo 150: 150 SMTP at $2/mailbox + 150 Google Workspace at $2.50/mailbox = $675/mo for 300 mailboxes

SMTP-only monthly tiers:

• 30 mailboxes: $2.50/mailbox = $75/mo
• 70 mailboxes: $2.25/mailbox = $157.50/mo (-11% vs 30)
• 300 mailboxes: $1.90/mailbox = $570/mo (-31%)
• 10,000 mailboxes: $1.20/mailbox = $12,000/mo (-52%)
• 20,000 mailboxes: $0.80/mailbox = $16,000/mo (-68%)

SMTP quarterly tiers: 32@$3.10, 68@$2.40, 400@$1.80.

Domains: $72/year for 6 domains on Maildoso ($12/domain/year: cheaper than Mailforge's $14).

Apples-to-apples at 30 mailboxes, yearly billing, pure SMTP:

• Mailforge 30 slots: extrapolating from the $2/floor at 200 slots and $6 at 10 slots, expect ~$108/mo (approximately $3.60/mailbox effective)
• Maildoso 30 SMTP monthly: $75/mo ($2.50/mailbox)

Maildoso is cheaper on pure SMTP at 30 mailboxes. Mailforge becomes competitive only at 150+ mailboxes yearly.

At 30 mailboxes with Google Workspace included:

• Mailforge: Not available, you'd need Primeforge at $4.50/mailbox ($135/mo) in addition.
• Maildoso Combo 15: $90/mo for 30 mailboxes (15 SMTP + 15 GW).

That's the real difference, Maildoso's Combo plans let you mix SMTP and real Google Workspace at $3/mailbox blended. Mailforge doesn't ship Google Workspace at all, and Primeforge sold separately is more expensive.

Mailforge provisions shared-IP SMTP mailboxes. You share outbound IPs with other Mailforge customers. The infrastructure is built on top of distributed mail servers. Mailforge claims 'excellent deliverability' and publishes a Mailbox Heat Score™ metric to flag individual inboxes whose reputation is drifting. It does not ship real Google Workspace or Microsoft 365 accounts. If you want those, Primeforge is the sibling product ($4.50/mailbox/month) and Azure is not offered anywhere in the Forge Stack.

Maildoso is genuinely two product lines under one brand. The SMTP side is shared-IP infrastructure with IP rotation, self-healing (burned mailboxes auto-pause for 14 days then rotate back in), and inbox placement tests every 3 days. The Google Workspace side is real provider accounts delivered via Combo plans with automated DNS setup and optional dedicated IPs via their Business Ultra tier. The homepage explicitly says 'choose between reliable SMTP inboxes or official Google Workspace accounts with a business license'. Google Workspace at Maildoso is genuinely real, not proxied through SMTP.

No Microsoft 365 option on either vendor. Mailforge routes you to Primeforge; Maildoso has no M365 path at all. If you need Microsoft 365 or Azure for provider diversity, both products fall short.

Deliverability ballpark at 30 days, identical campaigns:

• Mailforge shared SMTP: 58-68% inbox
• Maildoso SMTP only: 60-70% inbox (slightly better due to IP rotation and self-healing)
• Maildoso Combo (Google Workspace half): 72-80% inbox
• Real Google Workspace with isolated warmup + monitoring: 80-88% inbox

The gap between Mailforge SMTP and Maildoso Combo Google Workspace is roughly 15-20 points. The gap between either shared-SMTP product and a fully-monitored real-provider setup is another 10 points on top.

This is where Maildoso pulls ahead significantly.

Mailforge ships:

• Free automated DNS setup (SPF, DKIM, DMARC, tracking)
• Bulk DNS updates
• Domain transferring
• Multiple workspaces
• Mailbox Heat Score™ (basic drift monitoring)
• SSL and domain masking (paid add-on)
• AI outbound strategy tool (lead-gen)
• Works with any sending software (no numeric integration count claimed)

Maildoso ships (verified on the pricing page):

• IP rotation (burns spread across IP pool)
• Self-healing mailboxes: when a mailbox burns, it auto-pauses for 14 days to recover, then rotates back in
• Inbox placement tests every 3 days with per-mailbox health scores
• Auto-configured SPF, DKIM, DMARC per domain
• Primary domain protection via CAPTCHA
• Domain health monitoring (know whether a domain is active or blocked)
• Inbox reputation monitoring
• API + MCP for automation
• Deliverability consulting included
• One-click integrations with 6 named platforms: Instantly, Smartlead, Saleshandy, Apollo, Lemlist, EmailBizon

What this adds up to: Maildoso's self-healing + placement testing + reputation monitoring is a functional InfraGuard-lite. You get automated recovery on burned mailboxes and continuous deliverability checks, baked into the base product at no additional cost. Mailforge's Mailbox Heat Score is the rough equivalent of the monitoring half but doesn't include the automated recovery half.

One important note: earlier versions of cold email comparison articles (including some on our own site) said things like 'Maildoso has no inbox placement testing' or 'Maildoso has no monitoring.' Those claims are wrong, Maildoso's pricing page explicitly shows 'We run inbox placement tests every 3 days and display up-to-date health scores for each mailbox' and the homepage features include domain health monitoring and inbox reputation monitoring. Corrected as of April 2026.

Neither Mailforge nor Maildoso ships a fully integrated warmup product. This is the biggest shared gap between them.

Mailforge: Warmup is explicitly not bundled. The Salesforge product line ships Warmforge as a separate product at roughly $10/slot/month standalone (free only if you also subscribe to the Salesforge sequencer). A Mailforge-only customer pays Warmforge fees on top if they want warmup at all.

Maildoso: The pricing page describes a 'warmup recommendation', '15 cold emails / 25 warmup emails per day' for Google Workspace mailboxes, '15 cold emails / 80 warmup emails per day' for SMTP. That's a sending cadence guideline, not a bundled warmup tool. Some third-party reviewers have noted 'there's no built-in warm-up tool anymore': suggesting Maildoso used to have one and removed it.

Either way, both products expect you to bring a warmup tool separately. Mailsimple, Warmy, Lemwarm, Folderly, or your sender's built-in warmup pool are the common choices.

The result: if you're comparing total cost of ownership, warmup should be in both columns. A fair 30-mailbox 6-month TCO looks like this:

Line item	Mailforge	Maildoso
30 SMTP mailboxes (6 months)	~$648	$450
3 domains (1 year)	$42	$36 (proportional)
Warmup tool (Warmforge or external at ~$10/slot/mo)	$1,800	$1,800
Monitoring / placement testing	$0 (basic Heat Score)	Bundled
6-month total	~$2,490	~$2,286

Maildoso is cheaper and ships more built-in monitoring. Mailforge's only TCO advantage is if you commit to 200+ mailboxes yearly, where the effective per-mailbox rate drops below Maildoso's 300-mailbox tier.

Mailforge trust signals (from the homepage):

• '10k+' businesses served
• 4.9 rating (source unspecified: not G2, not Capterra)
• 1K+ community members
• 'Ready In 5 Mins' setup claim
• Part of the Salesforge product line with named case studies (Woodpecker, ChannelCrawler via Infraforge)

Maildoso trust signals (verified from the homepage and pricing page):

• 5,000+ companies
• 400k+ mailboxes managed
• 10M+ emails sent daily
• 4.7 G2 rating with 159 reviews
• Featured testimonial from Dhruv Patel, co-founder of Saleshandy: 'Maildoso is a for deliverability'

Maildoso has the stronger third-party validation (G2 reviews, Saleshandy founder testimonial, public 10M-emails-daily volume claim). Mailforge has the broader product line (the other four Forge products), which is valuable if you want to mix and match within one vendor.

Pick Mailforge if:

1. 1You're already inside the Salesforge Forge Stack and the bundled discount math with Mailforge + Warmforge + Infraforge + the Salesforge sequencer is better than buying separately.
2. 2You need to cross-sell into the sibling Primeforge product for real Google/Microsoft later.
3. 3You're committing to 200+ mailboxes on yearly billing and the $2.42 effective rate matters more than features.
4. 4You already have your own warmup tool and monitoring setup and don't need Maildoso's bundled versions.
5. 5You want the broader Forge product line for AI strategy tools, Leadsforge lead gen, etc.

Mailforge is the rational pick for teams who view cold email infrastructure as a commodity and want to price-shop at high volume. It's the wrong pick below 50 mailboxes or anytime you want bundled monitoring.

Pick Maildoso if:

1. 1You want a single vendor for SMTP + Google Workspace mailboxes via the Combo plans.
2. 2You're under 100 mailboxes and the $2.50-$3.00 per-mailbox rate is competitive.
3. 3You value bundled placement testing, self-healing, and domain health monitoring without paying extra.
4. 4You want to send from real Google Workspace accounts with automated DNS and don't need Microsoft 365.
5. 5You're price-sensitive and value the $12/domain/year over Mailforge's $14.
6. 6You want IP rotation built into the mailbox layer without having to configure it manually.

Maildoso is the stronger pick for most buyers under 100 mailboxes. The feature gap alone (self-healing, placement testing every 3 days, reputation monitoring) makes the $0.50-$1.00 per-mailbox price difference irrelevant.

Both Mailforge and Maildoso have identical blind spots. Neither ships:

• Microsoft 365 mailboxes. Mailforge has no path at all. Maildoso has no M365 tier. If your sending strategy needs Microsoft 365 for provider diversity, both vendors fail the test.
• Azure mailboxes. Nobody in this category ships Azure, this is a genuinely differentiated offering held only by InboxKit at $30 per tenant for up to 100 mailboxes.
• Bundled warmup that matches the mailbox tier. Mailforge punts to Warmforge. Maildoso ships a cadence recommendation, not a warmup product. Both require a third tool.
• Deep, automated blacklist monitoring with auto-pause. Maildoso comes closest with self-healing + reputation monitoring, but it doesn't match InfraGuard's 6-hour blacklist check cadence or automated bounce tracking with auto-pause.
• Native 24+ sequencer integrations. Maildoso claims 6+ named, Mailforge claims 'any'. Real native integrations with pre-built OAuth flows are limited on both.

If you need any of those five capabilities, you're outgrowing the Mailforge-vs-Maildoso decision. The third option for buyers with those requirements is InboxKit, which ships real Google Workspace, real Microsoft 365, Azure mailboxes, isolated warmup as a $3/mailbox/month add-on, InfraGuard monitoring bundled on all plans, and 24+ native sequencer integrations including Instantly, Smartlead, Saleshandy, Lemlist, Apollo, and more. Plans from $39/mo for 10 mailboxes, $99/mo for 30, $299/mo for 100.

The honest framing: Mailforge and Maildoso are the right tier if you want a commodity shared-IP setup. InboxKit is the right tier if you want real provider accounts plus the monitoring stack on top. The pricing gap between the two tiers is real: roughly $1.50-$3.00 per mailbox at 30-mailbox volume, but so is the deliverability and operational-overhead difference.