Sendgrid Email Blocks Impacting Some Microsoft Office Users

Update timeline

1. identified Jan 22, 2026, 11:34 PM UTC

   Sendgrid is currently investigating an issue with Microsoft that is causing some customers to experience degraded performance of Microsoft Outlook. This issue is resulting in failed deliveries of some emails from Snapsheet to the impacted Microsoft accounts. Updates from Sendgrid are available at https://status.sendgrid.com/.

2. identified Jan 23, 2026, 01:56 AM UTC

   Sendgrid is continuing to investigate the issue. Updates from Sendgrid are available at https://status.sendgrid.com/.

3. identified Jan 23, 2026, 02:12 PM UTC

   Sendgrid is continuing to investigate the issue. Updates from Sendgrid are available at https://status.sendgrid.com/.

4. identified Jan 27, 2026, 07:59 PM UTC

   We are seeing a some recovery in email deliverability following the disruption with our email delivery partner Sendgrid. While we are still awaiting official confirmation of a final resolution. We will continue to monitor the situation closely.

5. resolved Jan 28, 2026, 04:35 PM UTC

   We have received confirmation from SendGrid that the increased Microsoft inbox provider blocks are due to an issue with Microsoft, and that the issue is not isolated to SendGrid’s environment nor specific to their sending configuration. While we are seeing improvement (reduction) of deferrals, Microsoft customers who are continuing to observe excessive deferrals and/or blocks should fill out the OLC Support request form at https://olcsupport.office.com/. Thank you for your patience and understanding regarding this issue. If you have any further questions or concerns, please contact Snapsheet Support for assistance.