Mailgun
A veteran transactional email service for SMTP support and high-volume sending.
Not for: Side projects that want the simplest API and fastest time-to-first-email.
- Backend teams with meaningful send volume who need SMTP compatibility and mature ops tooling
- Mailgun provides REST API and SMTP with domain verification, webhooks, and detailed logs
- Free trial then pay-as-you-go; feature-rich but engineering-oriented UI—often compared with Postmark and Resend
Registration available; international credit card required for billing. DNS setup for some domestic domains may need extra propagation time.
Can China-based solo developers sign up directly?
Registration available; international credit card required for billing. DNS setup for some domestic domains may need extra propagation time.
What payment or payout methods matter most?
The most relevant methods here are PayPal. Confirm the exact flow for your use case on the checkout page and billing docs.
Does it offer a free tier or trial?
There is no long-term free tier. You can test it before paying. Trial includes a free send allowance; paid plans from ~$15/month billed by volume.
What is it best for?
Backend teams with meaningful send volume who need SMTP compatibility and mature ops tooling.
Is there an affiliate program worth considering?
Partner program aimed at technical integrators and referral sites.