SMTP2GO Outage History

SMTP2GO's inbound mail servers experienced an unusually high volume of traffic, causing delays in email message delivery for users. The Email sending (SMTP service) component was affected for 57 minutes. The development team resolved the incident and advised users to allow time for the message backlog to clear.

SMTP2GO experienced email processing delays in the AU region for 10.8 hours, affecting email delivery speeds while emails showed as "Processed" in the Activity reporting page. The engineering team identified and implemented a fix to resolve the processing backlog. The incident was fully resolved with normal email delivery speeds restored and all reporting records updated.

SMTP2GO experienced a system-wide outage affecting their email sending (SMTP service) for 7.2 hours, causing connectivity issues for users. The company provided alternative server endpoints (mail-us.smtp2go.com and mail-eu.smtp2go.com) as a workaround during the incident. The issue was resolved with a implemented fix after monitoring confirmed stability.

SMTP2GO experienced a 24.2-hour service disruption affecting email delivery to Microsoft-hosted domains (hotmail.com, outlook.com, live.com, etc.), with emails showing as "Processed" but failing delivery with "451 4.7.650" error responses. The issue was caused by a global Microsoft-wide problem that affected multiple email service providers, not a fault with SMTP2GO's systems. The incident was resolved once Microsoft fixed the underlying issue on their end.