Sending Email from Python

Python has a library for Simple Mail Transfer Protocol(SMTP) that can be used to send gmail from your pi.
import smtplib
GMAIL_USER='your_name@gmail.com'

GMAIL_PASS='your_password'
SMTP_SERVER='smtp.gmail.com'
SMTP_PORT=587

def send_email(recipient, subject,text):
	smtpserver=smtplib.SMTP(SMTP_SERVER,SMTP_PORT)
	smtpserver.ehlo()
	smtpserver.starttls()
	smtpserver.ehlo
	smtpserver.login(GMAIL_USER,GMAIL_PASS)
	header='To:' + recipient +'\n' +'From: '+ GMAIL_USER
	header=header + '\n' +'Subject:' +subject +'\n'
	msg=header +'\n'+ text + ' \n\n'
	smtpserver.senmail(GMAIL_IUSER, recipient, msg)
	smtpserver.close()
	
send_email('destination_email_address', sub', 'this is text')  
    

To use the code change the variables GMAIL_USER, GMAIIL_PASS to match your email credentials. If you are not using Gmail then you will need to change the values of the SMTP_SERVER and even the port.

Also change destination and the text you wish to send.