[Jean-Marc]

I tested downgraded the plugin to 2.0.20 as suggested above.
This indeed solves the smtp:none:none://localhost:25 problem but the following error remains:
Client error:POST https://graph.microsoft.com/v1.0/me/sendMailresulted in a400 Bad Requestresponse: {"error":{"code":"ErrorParticipantDoesntHaveAnEmailAddress","message":"A participant without an email address is not all (truncated...)

[Jean-Marc]

Same here. Test Emails work fine. All WooCommerce emails get a “Unable to send mail.” status and solution : “Not found, check status column for more info.”. In Session Transcript it says : “smtp:none:none://localhost:25”
Any quick fix?

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