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Nylas Application Services Operational
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Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Sep 25, 2026

No incidents reported today.

Sep 24, 2026

No incidents reported.

Sep 23, 2026

No incidents reported.

Sep 22, 2026

No incidents reported.

Sep 21, 2026

No incidents reported.

Sep 20, 2026

No incidents reported.

Sep 19, 2026

No incidents reported.

Sep 18, 2026

No incidents reported.

Sep 17, 2026

[US/EU] Delayed Message Sync and 404 Errors for IMAP-Based Accounts
Resolved - IMAP synchronization has returned to normal operating levels across the US and EU regions. Our monitoring confirms that affected grants have recovered and previously missed message activity and associated webhooks have been processed.

Customers are no longer affected by this incident.

Thank you for your patience while we worked to address this issue.
Sep 17, 07:59 PDT
Update - Mitigated - The remediation has been fully deployed across the US and EU regions, and IMAP synchronization and error rates have returned close to normal operating levels.

Some previously affected grants may still be catching up on messages missed during the incident. We are continuing to monitor recovery closely and validate that synchronization remains stable before resolving the incident.
Sep 17, 07:23 PDT
Monitoring - We identified an issue in IMAP message processing that could cause synchronization to stop when certain messages were encountered, resulting in 404 responses when those messages were retrieved by ID.

A remediation has now been fully deployed across the US and EU regions. Message synchronization and success rates are recovering, and we are continuing to validate stability before resolving the incident.
Sep 17, 06:48 PDT
Identified - We have identified an issue in IMAP message processing that can cause synchronization to stop when certain messages are encountered, resulting in 404 responses when those messages are retrieved by ID.

Our team is actively working on remediation and validating the appropriate recovery path. We will provide another update as this work progresses and we confirm recovery.
Sep 17, 06:03 PDT
Investigating - We are investigating elevated 404 errors when retrieving specific messages via the Messages API for IMAP grants in the US and EU regions. Some messages that exist in the provider mailbox may return a 404 response when retrieved by ID.

Our team is actively investigating the issue and working to restore normal message retrieval. We will provide additional information as it becomes available.
Sep 17, 05:31 PDT

Sep 16, 2026

No incidents reported.

Sep 15, 2026

No incidents reported.

Sep 14, 2026

No incidents reported.

Sep 13, 2026

No incidents reported.

Sep 12, 2026

No incidents reported.

Sep 11, 2026

No incidents reported.

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