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Mailprotector Outage History

Every past Mailprotector outage tracked by IsDown, with detection times, duration, and resolution details.

There were 118 Mailprotector outages since April 2017. The 13 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor April 8, 2026

April 2026: Unable to send or receive email with Google Workspace intermittently

Detected Apr 8, 2026 2:07 PM EDT · Resolved Apr 8, 2026 7:02 PM EDT · Duration about 5 hours

Mailprotector's CloudFilter and SafeSend Email Security services experienced intermittent failures when sending emails from Google Workspace accounts, along with delays in inbound email delivery due to an issue on Google's side. The incident affected email routing for Google Workspace users and lasted 4.9 hours. The issue was resolved after Google addressed their underlying problem.

Minor March 26, 2026

March 2026: Shield aggressively holding messages

Detected Mar 26, 2026 3:06 PM EDT · Resolved Mar 26, 2026 4:16 PM EDT · Duration about 1 hour

Mailprotector deployed an update at 2:00 PM ET to improve brand impersonation protection, but it aggressively held outgoing messages and incorrectly sent legitimate inbound emails to Junk folders, particularly affecting emails with social media links in signatures. The update was rolled back at 2:50 PM ET after 1.2 hours, with held outgoing emails automatically released and jailed inbound emails reprocessed, though some users needed to manually move emails out of their Junk folders.