Transactional Email APIs · monthly outage report
Transactional Email APIs outages: October 2025
The 14 transactional email APIs we track reported 17 incidents in October 2025. Mailjet reported the most (3). 6 had a clean month: Amazon SES, Brevo, Mailchimp Transactional (Mandrill), MailerSend, Resend, Twilio SendGrid.
| Vendor | Incidents | Partial / major |
|---|---|---|
| Mailjet | 3 | 1 |
| SMTP2GO | 3 | 0 |
| SparkPost (Bird) | 3 | 0 |
| Loops | 2 | 1 |
| Mailgun | 2 | 0 |
| Mailtrap Email Sending | 2 | 2 |
| Elastic Email | 1 | 0 |
| Postmark | 1 | 1 |
| Amazon SES | 0 | 0 |
| Brevo | 0 | 0 |
| Mailchimp Transactional (Mandrill) | 0 | 0 |
| MailerSend | 0 | 0 |
| Resend | 0 | 0 |
| Twilio SendGrid | 0 | 0 |