How to get Outlook/other email client to send/receive on a gmail account:
Outgoing Mail (SMTP) Server - Requires TLS - smtp.gmail.com
Port: 465 or 587
Requires SSL: Yes
If setting TLS, choose port 587
Requires authentication: Yes
Use same username/password as incoming mail server
Full Name or Display Name: [your name]
Account Name or User Name: your full Gmail address (username@gmail.com).
Google Apps users, please enter username@your_domain.com
Email address: your full Gmail address (username@gmail.com)
Google Apps users, please enter username@your_domain.com
Password: your Gmail password
https://support.google.com/mail/troubleshooter/1668960?rd=1#ts=1665018 and select an email client
https://www.digitalocean.com/community/tutorials/how-to-use-google-s-smtp-server A couple of caveats