Email · head-to-head
mail.gw vs Sendinblue
mail.gw
mail.gw is a temporary/disposable email API that issues throwaway inboxes for testing signups and email-verification flows. Its Hydra/JSON-LD REST API is rooted at api.mail.gw, exposing /domains (available disposable-email domains) and /messages collections, with no API key required for the base entrypoint.
Sendinblue
Sendinblue rebranded to Brevo in 2023, and its REST API still covers the same ground under the new name: transactional and marketing email, SMS, and contact/campaign management behind an API-key header. A free plan covers a daily email allowance before metered and subscription paid tiers.
| mail.gw | Sendinblue | |
|---|---|---|
| Authentication | None | API Key |
| Pricing | free | freemium |
| Formats | JSON-LD | JSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
mail.gw needs no API key, while Sendinblue requires API Key — pick mail.gw to start without signup.