SMTP: Why you shouldn't send email with G-Suite/Gmail!
Sending email with GSuite is NOT RECOMMENDED, Gsuite is an excellent mailbox tool, but it is NOT an SMTP service (even though it has one).
Problems with GSuite:
- Poor deliverability, your emails will likely end up in spam anyway
- Limited to 100 emails per day, see: https://support.google.com/a/answer/166852?hl=en
If you are set on using GSuite you will need to download the SMTP extension and follow Google's instructions for enabling the SMTP gateway.