BrevoSend signup confirmations, password resets and other transactional emails through an API or SMTP.
Free: 300 emails/day · 1 user · Brevo branding
Transactional email APIs
Free alternatives to Resend
Find a free app for the parts of Resend you actually use.
Compare the free allowance and limitations on each app’s page. These are workflow alternatives, rather than identical copies.
Free options
Suggest an alternative →Brevo
PostalSend application email through SMTP or an HTTP API on your own infrastructure.
100% free open-source software (GPLv3). Unlimited emails, domains, and mail servers.
opensend.ccSend transactional emails through an API on infrastructure you control.
Free open-source (Apache-2.0). Unlimited emails (backed by AWS SES at $0.10/1k).