Mails.ai vs SendHQ (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Not comparable
Not comparable: Mails.ai does not list a price
Free plan
Mails.ai
Only Mails.ai has one
Higher rating
Mails.ai
4.0 against 3.6
Same job?
Yes
Both are AI Infrastructure & Agent Tooling tools

Side by side

Compared on	Mails.ai	SendHQ
Our rating	4.0Better	3.6
Starts at	Free	$9/mo
Free plan	YesBetter	No
Category	AI Infrastructure & Agent Tooling	AI Infrastructure & Agent Tooling
Plans	Free	From $9/mo
Key features	Email API designed for AI agents Prompt injection scoring on inbound messages Sender reputation graph Opt-in intent and entity classification MCP server integration	Developer API for sending and receiving transactional email Separate inbox and sending identity per product, service or AI agent Domain verification plus delivery and bounce tracking Inbound mail routing and scoped API keys Starter plan of 10,000 emails and 15 domains for $9 a month
Pros	Injection scoring addresses the most exposed surface agent inboxes have Structured reply events rather than raw message parsing Opt-in classification is a sound privacy default	Giving each AI agent its own inbox and identity suits agent-driven products Low entry price for real sending volume Inbound and outbound share one workspace
Cons	An injection score raises the floor; it is not a guarantee Agents still need their own limits on acting without confirmation Infrastructure requiring engineering to adopt	No free tier Marketing email costs $10 a month more than transactional Accounts with sustained high bounce or complaint rates are restricted
Company	Mails.ai	Wavicle

Prices come from each vendor's pricing page, last checked 20260921. Check the vendor before you buy.

FAQ

Questions people ask

Is Mails.ai better than SendHQ?

In our reviews Mails.ai scores 4.0 and SendHQ scores 3.6. The better pick depends on the job. Mails.ai: Email infrastructure built for AI agents - every inbound message arrives scored for prompt injection and sender reputation. SendHQ: Observable email infrastructure for product teams and AI agents.

Which is cheaper, Mails.ai or SendHQ?

Mails.ai: free. SendHQ: from $9/mo.

Do Mails.ai and SendHQ have free plans?

Only Mails.ai has a free plan.

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