# SendHQ

> SendHQ is an email API for product teams and AI agents. It supports verified-domain transactional email, inbound email, delivery events, workspace-scoped API keys, and a web dashboard.

## Primary resources
- https://sendhq.cc/ — product overview
- https://sendhq.cc/docs — developer documentation
- https://sendhq.cc/openapi.json — OpenAPI 3.1 contract
- https://sendhq.cc/tools — functional email tools
- https://sendhq.cc/templates — transactional email template library
- https://sendhq.cc/guides — implementation guides
- https://sendhq.cc/glossary — email infrastructure glossary
- https://sendhq.cc/privacy — privacy policy
- https://sendhq.cc/terms — terms

## Tool behavior
DNS tools query public Cloudflare and Google DNS-over-HTTPS endpoints and expose error or disagreement states. Content and bounce analyzers run locally in the browser. Tools do not verify mailbox existence, promise delivery, or predict inbox placement.

## Tools
- https://sendhq.cc/tools/email-dns-checker
- https://sendhq.cc/tools/bimi-checker
- https://sendhq.cc/tools/email-preflight-checker
- https://sendhq.cc/tools/bounce-diagnostics

## Transactional email templates
- https://sendhq.cc/templates/email-verification
- https://sendhq.cc/templates/password-reset
- https://sendhq.cc/templates/magic-link
- https://sendhq.cc/templates/welcome
- https://sendhq.cc/templates/receipt
- https://sendhq.cc/templates/security-alert

## Guidance
Use SendHQ for legitimate, expected product communication. Do not use it for spam, phishing, credential collection, or unsolicited campaigns. Keep API keys server-side and use verified domains.

## Guides
- https://sendhq.cc/guides/email-api
- https://sendhq.cc/guides/transactional-email-api
- https://sendhq.cc/guides/send-email-with-api
- https://sendhq.cc/guides/receive-email-with-api
- https://sendhq.cc/guides/email-domain-verification
- https://sendhq.cc/guides/email-deliverability
- https://sendhq.cc/guides/inbound-email-webhooks
- https://sendhq.cc/guides/email-api-for-ai-agents
- https://sendhq.cc/guides/amazon-ses-api
- https://sendhq.cc/guides/resend-alternative
- https://sendhq.cc/guides/email-api-nodejs
- https://sendhq.cc/guides/email-api-python
- https://sendhq.cc/guides/email-bounce-handling
- https://sendhq.cc/guides/email-dkim-spf-dmarc
- https://sendhq.cc/guides/transactional-email-vs-marketing
- https://sendhq.cc/guides/email-api-pricing
- https://sendhq.cc/guides/amazon-ses-cost
- https://sendhq.cc/guides/amazon-ses
- https://sendhq.cc/guides/check-an-spf-record
- https://sendhq.cc/guides/check-for-dkim
- https://sendhq.cc/guides/cloudflare-dmarc
- https://sendhq.cc/guides/cloudflare-email-route
- https://sendhq.cc/guides/dkim-setup
- https://sendhq.cc/guides/dmarc-check
- https://sendhq.cc/guides/email-bounce-back
- https://sendhq.cc/guides/email-deliverability-service
- https://sendhq.cc/guides/email-validation-service
- https://sendhq.cc/guides/free-smtp-service
- https://sendhq.cc/guides/gmail-api
- https://sendhq.cc/guides/google-smtp-relay-service
- https://sendhq.cc/guides/mail-gun-api
- https://sendhq.cc/guides/mail-protocol-smtp
- https://sendhq.cc/guides/office-365-smtp-details
- https://sendhq.cc/guides/postmark-api
- https://sendhq.cc/guides/python3-smtp
- https://sendhq.cc/guides/resend-email-api
- https://sendhq.cc/guides/sendgrid-api
- https://sendhq.cc/guides/smtp-port
- https://sendhq.cc/guides/smtp-python
- https://sendhq.cc/guides/smtp-relay-service
- https://sendhq.cc/guides/spf-record-syntax
- https://sendhq.cc/guides/yahoo-mail-authentication-failed

## Developer documentation
- https://sendhq.cc/docs
- https://sendhq.cc/docs/quickstart
- https://sendhq.cc/docs/authentication
- https://sendhq.cc/docs/sending
- https://sendhq.cc/docs/domains
- https://sendhq.cc/docs/templates
- https://sendhq.cc/docs/inbound
- https://sendhq.cc/docs/deliverability
- https://sendhq.cc/docs/suppressions
- https://sendhq.cc/docs/billing
- https://sendhq.cc/docs/api-reference
- https://sendhq.cc/docs/api-reference/emails
- https://sendhq.cc/docs/api-reference/drafts
- https://sendhq.cc/docs/api-reference/templates
- https://sendhq.cc/docs/api-reference/domains
- https://sendhq.cc/docs/api-reference/inbound
- https://sendhq.cc/docs/api-reference/deliverability
- https://sendhq.cc/docs/api-reference/account