There should be no difference in paid and free as the free plan eventually forces upgrade, ideally the free plan should be more robust as it is a trial account for proof of concept / service.
Mails to Yahoo were not delivered.
I exactly did what …
Thanks, POP3 works now after adding port 995 in Firewalld but now SMTP returns this error
Task 'My Email - Sending' reported error (0x800CCC68) : ' The server responded: 450 4.7.1 : Data command rejected: Service temporarily unavailable'