Delivery Diagnostic / Mail test : FAILED (No error message reported)

[Anonymous]

Hello, I have an issue with the mail test / newsletter
I can’t seem to make it work, and I’ve set it up the exact same way as another website I manage, which doesn’t have any issue with the plugin, both website have the same provider
I get this weird error when I try to send a test message : “FAILED (No error message reported)”
I also tried sending a newsletter and no one received the newsletter
I have this message at the bottom of the Delivery Diagnostic page, I don’t think it impacts the plugin but I might be wrong :
“Functions that are changing the default WordPress delivery system
[100] NewsletterDefaultMailer::fix_mailer”
Thanks for helping me clear this weird issue, if you need more info I’ll do what I can

[Author]

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