Sendaro
Transactional email API for indie developers and small teams
Developer ToolsFreemium#email-api#transactional-email#webhooks
Launches Dec 5, 2026 at 00:00 UTC
What is Sendaro?
Sendaro is a transactional email API for sending password resets, receipts, sign-in links and notifications from your own domain. You verify a domain by publishing DKIM, SPF and DMARC DNS records, create an API key, and send with one REST request or an SDK call. A message ID is returned right away.
Each domain can have up to 10 sending subdomains, so newsletters or product updates can stay apart from receipts and password resets. There is no list or campaign builder. The product includes email logs with event history, signed webhooks, a metrics dashboard for volume, bounce and complaint rates, idempotency keys, a suppression list, scoped API keys and an OpenAPI spec.
An email is marked delivered only after the recipient's mail server confirms it.
Sendaro features
- Send password resets, receipts, sign-in links and notifications from your own domain
- Verify a domain with DKIM, SPF and DMARC DNS records, then send with one REST request or an SDK call
- Email logs with event history, signed webhooks and a metrics dashboard for volume, bounce and complaint rates
Who uses Sendaro and for what
- Account verification and password reset emails for SaaS apps
- Payment receipts and automated notifications from your own domain
Sendaro FAQ
How do I start sending email with Sendaro?
Verify a domain by publishing DKIM, SPF and DMARC DNS records, create an API key, and send with one REST request or an SDK call. A message ID is returned right away.
Does Sendaro include a list or campaign builder?
No. Sendaro is a transactional email API and there is no list or campaign builder. Each domain can have up to 10 sending subdomains.
How do I know an email was delivered?
An email is marked delivered only after the recipient's mail server confirms it. Email logs keep the event history and signed webhooks can notify your app.
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