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Hello,
I have successfully connect WP Mail SMTP with gmail as instruction.
I tried to send a test email but receive both successful email and a “550 Mailbox not found” email as the picture below.
https://prnt.sc/11glrqm
I tried to create another gmail account and connect again but the issue is still not resolved. Also tried reinstall the plugin.
Could you please help me how to resolve it?
Thank you so much in advance.