SendGrid maintenance, November 2026: United States SMS and MMS Carrier Maintenance - T-Mobile

SendGrid is reporting planned maintenance: United States SMS and MMS Carrier Maintenance - T-Mobile. It is still open.

Degraded

From SendGrid's official status page, in their words.

What happened

Started
Status
scheduled
Duration
4.5 hours so far
Impact
maintenance
Affected
SMS Long Code, North America, MMS Long Code, North America, SMS Short Code, North America, MMS Short Code, North America
Window
5 Nov 2026, 3:00 pm to 12 Nov 2026, 12:00 am
  1. Scheduled
  2. In progressnot yet
  3. Completednot yet

Why it happened

SendGrid has not given a cause yet. We never guess one.

This incident on the SendGrid status page

Timeline

Newest first. From SendGrid's official status page, in their words.

  1. scheduled

    The T-Mobile network in the United States is conducting a planned maintenance from 04 November 2026 at 20:00 PST until 11 November 2026 at 05:00 PST. During the maintenance window, there could be intermittent delays delivering SMS and MMS to and from T-Mobile United States handsets when sending via long codes and short codes.

What this means for a business

  • Pause scheduled campaigns if you can; otherwise they queue and send when it is back.
  • Reply to urgent customers from your normal mailbox.
  • Form leads and chats are usually kept and delivered late, not lost.

The full guide: what to do when a service you rely on is down

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