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91.4%of 58 verified observed days had no reported provider issue
90-Day Trend
Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.
Monthly Status Summary
Month
Issue-free days
Days Tracked
Days with issues
September 2026
86.7%
30
4
This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.
Recorded Daily Status (Last 91 Days)
Jul 23Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data
Incident History
September 2026
[US/EU] Messages API - Elevated 404 Errors for IMAP Grants
<b>Mitigated</b> - 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.
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.
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.
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.
[US/EU] IMAP v3 - Message Retrieval and Webhook Degradation
Webhooks v3Other Email Server Hosting ProvidersIMAP v3
monitoring
IMAP message synchronization and webhook processing have returned to normal operating levels.
We are continuing to monitor service health closely and validate the completeness of delayed webhook delivery across affected accounts before resolving the incident.
identified
IMAP message synchronization and webhook processing have returned to normal operating levels following remediation.
We are continuing to monitor service health closely and validate that delayed webhooks from the affected period were fully delivered across affected accounts.
identified
<b>Mitigated</b> - The fix for this issue has been deployed, and affected IMAP accounts are now resynchronizing. We are seeing message synchronization recover and delayed webhooks begin processing as expected.
As affected accounts resynchronize, customers may receive an increased volume of delayed <tt>message.created</tt> webhooks, including notifications for messages previously processed. These notifications do not represent duplicate emails. Customers should ensure their applications handle repeated notifications without creating duplicate records or repeating automated actions.
Our current expectation is that missed webhooks will be backfilled automatically as synchronization completes. We are continuing to validate the completeness of that recovery, including messages from the affected period, before confirming full resolution.
Impact remains concentrated in the EU region, with substantially more limited impact in the US region. We will continue monitoring recovery closely and provide another update once stability and backfill completion have been confirmed.
identified
We have identified a compatibility issue in Nylas's IMAP synchronization affecting some connected IMAP accounts. Impact is concentrated in the EU region, with substantially more limited impact confirmed in the US region. Multiple IMAP hosting providers may be affected, and we are continuing to validate the full scope.
Affected accounts may have missing messages in Nylas API responses and delayed or missing message webhooks. The underlying emails remain available at the email provider.
As a temporary workaround, customers can pass <tt>query_imap=true</tt> on Messages API requests for affected IMAP grants. This bypasses the Nylas message cache and retrieves messages directly from the underlying IMAP server.
A fix has been prepared and deployment is underway. As affected accounts resynchronize, customers may receive an increased volume of delayed <tt>message.created</tt> webhooks, including notifications for messages previously processed. These notifications do not represent duplicate emails. Customers should ensure their applications handle repeated notifications without creating duplicate records or repeating automated actions.
We will provide further updates as deployment and recovery progress. Thank you for your patience.
identified
We have identified an issue affecting Nylas's cached message data for IMAP grants in the EU region. The underlying IMAP mailboxes and messages are unaffected, and the US region is not affected.
As a temporary workaround, customers can pass <tt>query_imap=true</tt> on all Messages API requests for affected IMAP grants. This bypasses the Nylas message cache and retrieves messages directly from the underlying IMAP server.
Our team is actively working to restore normal cached message synchronization and webhook delivery. We will provide additional updates as recovery progresses.
investigating
We are continuing to investigate this issue.
investigating
We are investigating degraded message retrieval and webhook delivery affecting IMAP grants in the EU region. Customers may see messages missing from standard Messages API responses and may not receive expected message webhooks. The underlying IMAP mailboxes and messages remain available. The US region is not affected.
Our team is actively investigating the issue and working to restore normal service. We will provide additional information as it becomes available.
[US] Notetaker - Microsoft Teams - Degraded Join Rates
We have identified the issue affecting Notetaker join rates for a limited subset of Microsoft Teams meetings in the US region. The EU region and other supported meeting providers are not affected.
Our team is deploying a fix and initial validation indicates it is working as intended. We are continuing deployment and testing while closely monitoring join performance.
investigating
We are investigating degraded Notetaker join rates affecting some Microsoft Teams meetings in the US region. The EU region and other supported meeting providers are not affected.
Our team is actively investigating the issue and working to restore normal join performance. We will provide additional information as it becomes available.
August 2026
[US/EU] Elevated Errors for Microsoft Message Send, Draft, and Read Operations
According to Microsoft's service health updates, recovery continues across the remaining infrastructure affected by the Exchange Online service degradation, with availability returning across previously impacted scenarios.
Nylas monitoring confirms that message send, draft, and read operations for Microsoft-connected accounts are currently operating at normal levels across both the US and EU regions. The Microsoft-related errors observed during the incident have remained near normal levels i...
monitoring
According to Microsoft's service health updates, mitigation has been deployed for the ongoing Exchange Online service degradation and Microsoft continues to report recovery across affected services.
Nylas monitoring confirms that Microsoft-connected message send, draft, and read operations have substantially recovered across both the US and EU regions. The provider-related errors observed during the incident have declined to near-normal levels, and request performance continues to stabilize....
identified
According to Microsoft's service health updates, Microsoft has begun deploying broader mitigation for the ongoing Exchange Online service degradation and is reporting gradual recovery across affected services.
Microsoft has indicated that mail flow is expected to be among the first areas to recover. We are continuing to monitor the impact to Microsoft-connected Nylas accounts and will provide another update as recovery progresses.
This issue remains limited to Microsoft-connected accounts a...
identified
We have confirmed that the elevated error rates are related to an ongoing Microsoft Exchange Online service degradation affecting Microsoft-connected accounts. Microsoft is tracking the incident as EX1464935.
Customers with Microsoft-connected accounts may experience failures when sending messages, creating or accessing drafts, or retrieving message and mailbox data in the US and EU regions. Some requests may require retrying.
This issue is limited to Microsoft-connected accounts and does n...
investigating
We are seeing elevated error rates affecting message sending, drafts, and message and folder retrieval for a subset of Microsoft-connected accounts in the US and EU regions. Some requests may fail or require retrying.
Microsoft is also reporting a service degradation that appears consistent with the behavior we are observing: https://status.cloud.microsoft/
Initial evidence indicates that this issue is related to the ongoing Microsoft service degradation. We are continuing to assess the imp...
Legacy Incident Archive
17 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
June 2026
[US & EU] Grant Creation and Authorization Errors
majorSource not attested
Last archived state: resolved
View archived record details
identified
We have identified an issue affecting grant creation and authorization requests in our v3 environments (US and EU).
Some customers may experience errors when attempting to create or authorize grants. Our Engineering team has identified the likely cause and is currently deploying a hotfix.
We will continue monitoring the deployment and will provide the next update within 30 minutes, or sooner if we have meaningful progress to share.
May 2026
[US & EU] Notetakers Failing to Join Zoom & Google Meet
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
We have deployed mitigation steps while we wait on Oxylabs, and join rates are improving once again. We will continue to monitor and post updates as available.
identified
Starting at approximately 8:59 AM PT, our 3rd party provider Oxylabs experienced an outage that is preventing Nylas Notetakers from joining some Zoom and Google Meet meetings. We are working with the provider and deploying internal mitigation steps now
Sending errors with Transactional Send and Agent Account features
criticalSource not attested
Last archived state: resolved
View archived record details
investigating
We are investigating sending failures with our Transactional Send (Beta) and Agent Account (Beta) features.
The Nylas API is not affected and is still running correctly. This issue is strictly limited to those two beta features.
We are currently investigating elevated latency affecting Gmail realtime (Pub/Sub) event delivery in the US region. Customers may experience delayed webhooks notifications.
The issue was initially caused by an expired SSL certificate, which has since been addressed. However, the system has not fully recovered and latency remains elevated.
We will provide an update soon.
High number of 504 API errors for EWS grants
criticalSource not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating an increase in 504 API errors for EWS (Exchange on-premise) grants. Grants connected to other providers are not affected.
April 2026
Increased Latency for Notetaker Meeting join Events (US Region)
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
We have mitigated an issue in our US environment that briefly affected Notetaker services. Some instances experienced delays when joining meetings, but performance has now returned to normal. We are continuing to monitor the environment closely to ensure ongoing stability.
investigating
We are currently investigating an issue in our US environment affecting Notetaker services. Some Notetaker instances are experiencing delays in joining meetings, which may result in extended join latency or a failure to connect. Our engineering team is currently investigating the issue and working toward a resolution. We will provide more information as it becomes available.
Notetakers failing to join some Google Meet events
criticalSource not attested
Last archived state: resolved
View archived record details
monitoring
We have made improvements and Notetakers are joining correctly. We are continuing to monitor the Notetakers to ensure they continue to operate correctly.
investigating
We are currently investigating an issue where some Nylas Notetakers are not correctly joining Google Meet events. This does not appear to affect other meeting providers or any other parts of the API.
