How to set up Gmail to send email : Basic Authentication (SMTP)

Example settings for sending email using a Gmail email address

Item	Description
Mail Server	smtp.gmail.com
Port Number	587
Sending Email Address	Gmail email address
SMTP Username	Username (left side of @ in the Gmail email address)
Password	Account password
Recipient Email Address	Email address to receive email notifications

※ The following settings must be done in Gmail settings.

Turn on “2-Step Verification” and create an “App Password” and specify that password.
https://support.google.com/accounts/answer/185833?hl=en&authuser=1

For the app selection, choose ‘Mail’, and for the device name, enter any value like “Gravio”.