My Magento 2.3.3 is not sending any emails from the solution.

As far as I can see, the cron job is running, the mail settings looks fine and are enabled.

I think I have tried it all, but no luck, it keeps saying "The order confirmation email is not sent".

I have tested if I can send a mail from a PHP file, and that works just fine.

Do anyone, have an idea?

  • Have you got any mail based extensions like attachments installed? 2.3.3 introduced some compatibility issues which were fixed in later versions Jun 10, 2020 at 20:52
  • I had the Fooman_EmailAttachments it's as far as I know, the only one. Had meaning I disabled it, but it didn't help.
    – Jakob
    Jun 10, 2020 at 21:04

1 Answer 1


Potentially the mail extension combined with a compatibility issue on 2.3.3 has broken it

Magento 2.3.3 mail not working



Try the official patch (last link) first. The first two links are for information. The first one demonstrates the type of messages you should be seeing in the exception log. The second post details what went wrong.

Just directly apply patch. Cant use composer.

EmailMessageInterface backward compatibility issue patch for Magento 2.3.3

  • Ok, thank you, will read trough the links and get back to you.
    – Jakob
    Jun 10, 2020 at 21:10
  • I had some problems installing the patch, so I ended up upgrading to 2.3.4 and now it works. Thank you for the info!
    – Jakob
    Jun 11, 2020 at 5:34

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