Hi @dreamsign,
Thanks for reaching out.
If the emails are being delivered to other mailboxes besides Gmail, then it seems there might be some issues with your email configuration or there might be some filters set up on the Gmail recipient email account.
To troubleshoot this, please confirm first that there are no filters in the Gmail account you are sending emails to that’s blocking your emails from being delivered.
If this doesn’t fix the issue, please send a test email to the email address shown when you visit?https://www.mail-tester.com/. Please see here:?https://i.imgur.com/CoZaCaE.png
After sending the test email, please click the button to Check your score. (https://i.imgur.com/BCeJaq4.png)
This will show if there are any issues with your DKIM, SPF, or DMARC records, and you can fix them accordingly.
Otherwise, please just follow the step-by-step setup guide for your SMTP mailer here again:
https://easywpsmtp.com/categories/docs/mailers/
I hope this helps. Thanks ??