Outbound email latency for non-EU Bird (Sparkpost) customers

What to do

• Check whether you use Braze Email in eu, us. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 25m it lasted.

  Anything that failed between 2026-02-24 19:34 UTC and 2026-02-24 20:00 UTC may need a replay.

• Subscribe to Braze's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=braze works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Braze 3

1. investigatingFeb 24, 2026, 7:34 PM UTC

   Braze Engineers detected an increase in latency on email outbound messaging for customers on Bird (Sparkpost) non-EU Braze clusters. This latency build up started at 13:53 ET. Braze has engaged Sparkpost, who have declared an incident and are actively investigating, you can follow their Statuspage for updates, and we'll update here in 30 minutes, or when we learn more. https://status.sparkpost.com/incidents/ndjn00g5vwm3

   provider

2. investigatingFeb 24, 2026, 7:42 PM UTC

   As of 14:34 ET, Sparkpost has identified the root cause to be a networking issue on their US cluster. We are monitoring performance for improvement.

   provider

3. resolvedFeb 24, 2026, 8:00 PM UTC

   As of 14:41 ET, Sparkpost has declared this incident resolved after implementing a fix. Braze Engineers have confirmed that real time outbound email latency has returned within normal operational bounds as of 14:34 ET. Any messages that failed during this window, were automatically retried. This incident is considered resolved.

   provider

Corrections

None so far.

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