SendHQ in short
SendHQ is an email API for developers and AI agents. It handles outbound transactional mail and inbound routing through the same interface, so a product can send a receipt and receive a reply without two vendors. Domains are verified in-app, delivery and bounce events are tracked, and access is controlled with scoped API keys. Marketing mail is an add-on on the same plan rather than a second product.
Pros
- Inbound and outbound mail in one product instead of two vendors
- Scoped API keys, so an agent or a service gets only the permissions it needs
- Delivery and bounce tracking included on the entry plan
- 25 verified domains on the $9 Starter, which is unusual at that price
- Marketing mail as an add-on on the same plan rather than a separate bill
Cons
- A young vendor carries less deliverability history than the large incumbents
- No bundled SMS or push, so a full messaging stack still needs another tool
- Transactional pricing is volume-tiered, so costs move as you grow
- Smaller ecosystem of integrations and community examples than the market leaders
SendHQ pricing
Details| Plan | Price | Includes |
|---|---|---|
| Starter | $9 / month | 50,000 emails / month, 25 verified domains, inbox and outbox, delivery and bounce tracking. $97.20/yr on annual |
| Scale | $39 / month | 200,000 emails / month, 100 domains, same inbox and outbox with higher volume. $421.20/yr on annual |
| Marketing add-on | $19 / month on Starter, $39 on Scale | Campaign sending on the same plan and domain |
Frequently asked questions
What does SendHQ cost?
Starter is $9 a month for 50,000 emails and 25 verified domains. Scale is $39 a month for 200,000 emails and 100 domains. Annual billing takes 10% off: $97.20 and $421.20 a year respectively.
Does SendHQ receive email as well as send it?
Yes. Inbound routing is part of the same product as outbound, so an application can send a message and handle the reply without a second vendor. That is the part most transactional APIs leave out.
Is SendHQ good for AI agents?
It is built for it: scoped API keys let an agent send within a narrow permission set, and inbound routing means an agent can receive and act on replies. Email from an agent becomes a normal integration rather than a browser automation hack.
Does it track delivery and bounces?
Yes, on the entry plan. Delivery and bounce events are exposed so you can react to them in code instead of guessing why a message did not land.
How many domains can I send from?
25 verified domains on Starter and 100 on Scale, verified inside the dashboard rather than through a support ticket.
Can I send marketing email with it?
Yes, as an add-on on the same plan: $19 a month on Starter and $39 on Scale. You do not need a second product to run campaigns.
How does SendHQ compare to Postmark?
Both focus on transactional mail and clean developer ergonomics. SendHQ's difference is scope: inbound routing, an inbox and domain management in the same interface, from $9 a month, rather than send-only pricing per thousand.
What are scoped API keys?
Keys restricted to specific permissions, so a service, a script or an agent gets exactly the access it needs. A leaked key that can only send is a much smaller problem than one that can change your whole account.
Is there a free trial?
The plans are flat-rate and the entry tier is $9 a month, so the practical test is running real traffic on Starter. Check the vendor's site for any current trial.
Does SendHQ replace a CRM?
No. It is the pipe: domains, sending, receiving, keys and events. Lifecycle campaigns and contact management on top of that are yours to build or buy.
How much does SendHQ cost?
Listed entry pricing: From $9/mo. Prices and quotas are published on the vendor's site and change; confirm current terms there before committing.
Does SendHQ have a free plan?
The published plans are Starter at $9 / month; Scale at $39 / month; Marketing add-on at $19 / month on Starter, $39 on Scale. No free plan is listed, so the paid tiers are the entry point. Prices and quotas are published on the vendor's site and change; confirm current terms there before committing.
What is SendHQ best for?
Products shipping transactional mail from code, and agents that need to send and receive email through one API.
Is SendHQ worth it?
The inbound side is the differentiator: plenty of transactional APIs send well, fewer give you an inbox and routing in the same dashboard at $9 a month. It is a smaller vendor than the big incumbents, so check deliverability on your own volume before moving everything.
Who should choose SendHQ?
You want one email API that covers sending, receiving, domains and keys instead of a separate stack per product.
How does SendHQ compare with Brevo?
Both sit in the "Transactional email APIs" category. Brevo is listed in the same category. Compare the two side by side on their head-to-head page before deciding.
How does SendHQ compare with Resend?
Both sit in the "Transactional email APIs" category. Resend is listed in the same category. Compare the two side by side on their head-to-head page before deciding.
What are the best SendHQ alternatives?
Brevo and Resend are the closest alternatives in the same category. The alternatives section on this page lists every indexed option with its review sources.
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