There have been a lot of updates recently. One busted the subject line (no longer includes the category) and now no mail goes out at all. Users are very unhappy. I don’t know how to start debugging this issue. Where can I error logs and I recall there is some page about sidekiq queues and so on, but…

Mail does not go out after recent update

Ethsim2 (Ethan ) January 17, 2026, 9:53am 6

I confirm hundreds of failed sidekiq jobs on latest-release +103

Topic		Replies	Views
Emails have stopped sending - end of file reached Support	27	4576	February 23, 2021
Sidekiq got error when sending mail after upgrade to latest version Support sidekiq	2	86	March 4, 2025
Severe Email Issue since last update a couple days ago - 3.4.0.beta4-dev Support	25	387	February 16, 2025
See the failed jobs in Sidekiq. (MailGun) failing to send emails Support email	7	103	July 8, 2025
Email failing with network timeout Support	5	1186	December 29, 2018