wordpress contact form not sending emails

Hello,

I have been trying to use contact form 7, but it is not sending emails.

I use gmail on my wordpress dashboard and forwarded email on the hosting.

I have tried SMTP, but unfortunately has not solved the problem.
I have tried wpforms but the same problem too.

I read that yahoo mail and hotmail are the same as gmail.

what should I do, please?

should I change gmail? or any other solution?

or what should I do to make a contact form work?
and many thanks in advance.

• This topic was modified 4 years, 9 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic