Transactional email API and shared team inbox built on Cloudflare Email Sending, Email Routing and D1
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Self-hosted alternatives to Resend
Resend is a hosted email API for developers that sends transactional and marketing email through a REST API, SDKs and SMTP. One listed app does its main job and runs in your own Cloudflare account.
Each answer comes from the app’s README and source code, compared with the features Resend describes on its own site.
Resend features, app by app
| Feature | EmailFlare |
|---|---|
| Send email through a REST API | Yes |
| Send through SMTP | No |
| Verify sending domains | Yes |
| Email templates | Yes |
| Send logs and analytics | Yes |
| Webhooks for delivery events | No |
| Suppression of bounced and complained addresses | Partly |
| Attachments, CC and BCC | No |
Transactional email API and shared team inbox built on Cloudflare Email Sending, Email Routing and D1
- What a Resend user would miss
- The send API has no attachments, CC, BCC, tags or scheduled sends, there is no SMTP relay or outbound webhook for delivery events, and bounce handling needs an Email Routing rule for the return-path address.
- What it adds
- API keys can be limited to chosen sending domains, keys come in test and live types, and the same project includes a shared team inbox that receives mail through Email Routing.
- Yes Send email through a REST API. POST /v1/send with an API key, an Idempotency-Key header and rate limiting.
- No Send through SMTP. No SMTP service in the source or docs.
- Yes Verify sending domains. Domains added through the Cloudflare API with a DKIM selector, return-path domain and verified flag.
- Yes Email templates. 50 built-in React Email layouts and custom Handlebars templates, referenced by templateSlug.
- Yes Send logs and analytics. Send logs page and stats routes, with statuses sent, failed, bounced and complained.
- No Webhooks for delivery events. No outbound webhooks, the webhook route in the Node server only receives bounce reports.
- Partly Suppression of bounced and complained addresses. Suppression list filled by unsubscribes, bounce and complaint parsing is in the Worker email handler but needs an Email Routing rule for the return-path address.
- No Attachments, CC and BCC. The send schema has no attachment, cc or bcc fields.
Sources:github.com/0xdps/emailflare#emailflare-api--email-sending-apigithub.com/0xdps/emailflare/blob/trunk/packages/email-core/src/index.tsgithub.com/0xdps/emailflare/blob/trunk/docs/TEMPLATES.mdgithub.com/0xdps/emailflare/blob/trunk/services/email-worker/src/index.tsgithub.com/0xdps/emailflare/blob/trunk/services/email-worker/src/email-handler.tsemailflare.devworkersnative.directory/api/apps/emailflare