Transactional Email APIs · monthly outage report

Transactional Email APIs outages: July 2025

The 14 transactional email APIs we track reported 9 incidents in July 2025. Mailgun reported the most (2). 7 had a clean month: Amazon SES, Brevo, Loops, Mailchimp Transactional (Mandrill), MailerSend, Resend, Twilio SendGrid.

VendorIncidentsPartial / majorOutage timeLongestWe detected
Mailgun20—11h 37m0
Postmark20—1d0
Elastic Email10——0
Mailjet1119m19m0
Mailtrap Email Sending10—1h 10m0
SMTP2GO10—17h 57m0
SparkPost (Bird)10—3h 39m0
Amazon SES00——0
Brevo00——0
Loops00——0
Mailchimp Transactional (Mandrill)00——0
MailerSend00——0
Resend00——0
Twilio SendGrid00——0

Longest Transactional Email APIs outages in July 2025

Current most reliable transactional email apis ranking →