Ubuntu : send email from local server

Install SSMTP packet:

sudo apt-get install ssmtp

open the configuration file:

sudo nano /etc/ssmtp/ssmtp.conf

Add new content as below (don’t forget change your_email and your_email_password, your_email_username):

Root=your_email@gmail.com
Mailhub=smtp.gmail.com:465
RewriteDomain=gmail.com
AuthUser=your_gmail_username # (before the @gmail.com part)
AuthPass=your_gmail_password
FromLineOverride=Yes
UseTLS=Yes

At last, do a test:

echo testing|mail -s 'Test Mail' example@gmail.com