Transactional Email APIs · monthly outage report
Transactional Email APIs outages: May 2026
The 14 transactional email APIs we track reported 10 incidents in May 2026. SparkPost (Bird) reported the most (4). 9 had a clean month: Amazon SES, Brevo, Elastic Email, Loops, Mailchimp Transactional (Mandrill), MailerSend, Mailjet, Resend, Twilio SendGrid.
| Vendor | Incidents | Partial / major |
|---|---|---|
| SparkPost (Bird) | 4 | 0 |
| Mailgun | 2 | 1 |
| Postmark | 2 | 0 |
| Mailtrap Email Sending | 1 | 0 |
| SMTP2GO | 1 | 0 |
| Amazon SES | 0 | 0 |
| Brevo | 0 | 0 |
| Elastic Email | 0 | 0 |
| Loops | 0 | 0 |
| Mailchimp Transactional (Mandrill) | 0 | 0 |
| MailerSend | 0 | 0 |
| Mailjet | 0 | 0 |
| Resend | 0 | 0 |
| Twilio SendGrid | 0 | 0 |