[How to config Gmail as mail sender] [SMTP config]

Gmail side (use 2-Step Verification and generate app password) :

*Because Google stopped supporting “Less Secure Apps” as of May 30th, 2022, seems this is a MUST to config this.

1. Google Account -> Security -> 2-Step Verification -> Input password as asked -> Turn ON (you could use SMS to get Gmail code to activate 2-Step Verification)
2. Google Account -> Security -> 2-Step Verification -> App password -> Input password as asked -> Select the app as mail and device... -> e.g. Other(Custom name) -> Input app name e.g. MyApp -> Generate
3. Copy a 16-character password
4. Use a 16-character password with Gmail username ([e-mail]) in Liferay side.

Google support link here.

Liferay side:

1. Control Panel -> Server Administration -> Mail
   1.1 Outgoing SMTP Server: smtp.gmail.com
   1.2 Outgoing Port: 465
   1.3 Use a Secure Network Connection: checked
   1.4 User Name: [e-mail]
   1.5 Password: [Generated by Gmail side]
2. Control Panel -> Instance Settings -> Email -> Email Sender
3. Send as [e-mail]