Update - Office 365 servers may sometimes fail to accept attachments larger than 3 MB. As a temporary alternative, we suggest using another method of sharing files with recipients, such as OneDrive. We have communicated the issue to Microsoft and are investigating additional mitigations.
Apr 17, 2025 - 18:47 UTC
Investigating - We received reports from a small number of customers that some drafts error when sending, with the message:
"Unexpected problem sending attachment larger than 3MB to Office 365."

Apr 17, 2025 - 13:15 UTC
App ? Operational
Real time events ? Operational
API and integrations ? Operational
Push notifications ? Operational
Rules and Workflows ? Operational
SMTP (non-Gmail / O365) ? Operational
Gmail ? Operational
O365 ? Degraded Performance
Facebook ? Operational
Twitter ? Operational
Twilio ? Operational
Other channels ? Operational
Front chat ? Operational
Calendar ? Operational
Analytics ? Operational
Knowledge Base ? Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Apr 22, 2025

No incidents reported today.

Apr 21, 2025

No incidents reported.

Apr 20, 2025

No incidents reported.

Apr 19, 2025

No incidents reported.

Apr 18, 2025

No incidents reported.

Apr 17, 2025

Unresolved incident: [office365] Message Attachment Size Limit Error.

Apr 16, 2025

No incidents reported.

Apr 15, 2025

No incidents reported.

Apr 14, 2025

No incidents reported.

Apr 13, 2025

No incidents reported.

Apr 12, 2025

No incidents reported.

Apr 11, 2025

No incidents reported.

Apr 10, 2025

No incidents reported.

Apr 9, 2025

No incidents reported.

Apr 8, 2025

No incidents reported.