3.

sudo service sendmail stop sudo apt-get remove sendmail

sudo ln -s /usr/sbin/ssmtp /usr/sbin/sendmail

4.

echo "email content" | mail -s "email subject" email_address_to_send_email_to@somedomain.com

ssmtp email_address_to_send_email_to@somedomain.com

To: email_address_to_send_email_to@somedomain.com From: your_email@gmail.com Subject: this is your email subject And here you can write the content of the email

CTRL + D

ssmtp email_address_to_send_email_to@somedomain.com < message.txt

Important security note:

I use Ubuntu Karmic Koala and this step wasn't necessary, but it might be for you. So, make sure you don't have sendmail installed. Again, for Ubuntu, paste this:And create a symbolic link for ssmtp to replace sendmail:That's about it. There are multiple ways you can now send an email. Open a terminal and:a)The above line is pretty much self explainatory so replace the text between the quotes with your email body and subject and do the same for email_address_to_send_email_to@somedomain.com - replace it with the email address you want to send the email to.b)Then enter the following lines in the terminal (pressing ENTER after each line):And to send the email, press:This time I won't explain what to replace, I hope you got the idea. Please note that you must follow the exact format as above, with an empty line between the email subject and the content of the email.c)You can also send emails from a text file. Use the following command:Where message.txt must follow the exact same format like on point b) (above).This has a lot of things it can be used for. You can set a cron job to email you different things at a given time, etc. I'm sure you can think of something you could use this for.as the password will be saved in plain text, I advise you not to use your main Gmail account. Instead, create one just for this.