Fixed: Email Notifications Delayed by Up to 45 Minutes

We identified and resolved a queue processing bottleneck that was causing changelog notification emails to be delayed by up to 45 minutes after publishing — and in rare cases, not delivered at all.

What caused it

A misconfigured retry policy on our email worker was causing failed sends to re-queue at the back of the global job queue, behind unrelated background tasks. Under heavy load, this created a compounding delay.

What we fixed

• Email sends now use a dedicated high-priority queue, isolated from background processing.
• Retry logic has been tightened — failed sends retry 3 times within 5 minutes before raising an alert.
• We added real-time monitoring on email send latency with an automatic alert if median delivery time exceeds 60 seconds.

If you were affected by delayed notifications in April, we're sorry. This is now resolved and monitored continuously.