diff --git a/README.md b/README.md
index 372df5df..39089ab4 100644
--- a/README.md
+++ b/README.md
@@ -785,6 +785,7 @@ API | Description | Auth | HTTPS | CORS |
 | [PostStack](https://poststack.dev/docs) | EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics | `apiKey` | Yes | No |
 | [Sendgrid](https://docs.sendgrid.com/api-reference/) | A cloud-based SMTP provider that allows you to send emails without having to maintain email servers | `apiKey` | Yes | Unknown |
 | [Sendinblue](https://developers.sendinblue.com/docs) | A service that provides solutions relating to marketing and/or transactional email and/or SMS | `apiKey` | Yes | Unknown |
+| [SMTPfast](https://smtpfa.st/docs) | Send transactional email, manage contacts and broadcasts, free 3,000 emails/month | `apiKey` | Yes | Yes |
 | [uchecker](https://api.uchecker.net/docs) | Bulk email verification with full SMTP server responses | `apiKey` | Yes | Unknown |
 | [Verifier](https://verifier.meetchopra.com/docs#/) | Verifies that a given email is real | `apiKey` | Yes | Yes |