Sending e-mails using yahoo account in python

To support non-ascii characters; you could use email package:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from email.header    import Header
from email.mime.text import MIMEText
from getpass import getpass
from smtplib import SMTP_SSL

# provide credentials
login = '[email protected]'
password = getpass('Password for "%s": ' % login)

# create message
msg = MIMEText('message body…', 'plain', 'utf-8')
msg['Subject'] = Header('subject…', 'utf-8')
msg['From'] = login
msg['To'] = ', '.join([login, ])

# send it   
s = SMTP_SSL('smtp.mail.yahoo.com', timeout=10) #NOTE: no server cert. check
s.set_debuglevel(0)
try:
    s.login(login, password)
    s.sendmail(msg['From'], msg['To'], msg.as_string())
finally:
    s.quit()

I racked my head (briefly) regarding using yahoo's smtp server. 465 just would not work. I decided to go the TLS route over port 587 and I was able to authenticate and send email.

import smtplib
from email.mime.text import MIMEText
SMTP_SERVER = "smtp.mail.yahoo.com"
SMTP_PORT = 587
SMTP_USERNAME = "username"
SMTP_PASSWORD = "password"
EMAIL_FROM = "[email protected]"
EMAIL_TO = "[email protected]"
EMAIL_SUBJECT = "REMINDER:"
co_msg = """
Hello, [username]! Just wanted to send a friendly appointment
reminder for your appointment:
[Company]
Where: [companyAddress]
Time: [appointmentTime]
Company URL: [companyUrl]
Change appointment?? Add Service??
change notification preference (text msg/email)
"""
def send_email():
    msg = MIMEText(co_msg)
    msg['Subject'] = EMAIL_SUBJECT + "Company - Service at appointmentTime"
    msg['From'] = EMAIL_FROM 
    msg['To'] = EMAIL_TO
    debuglevel = True
    mail = smtplib.SMTP(SMTP_SERVER, SMTP_PORT)
    mail.set_debuglevel(debuglevel)
    mail.starttls()
    mail.login(SMTP_USERNAME, SMTP_PASSWORD)
    mail.sendmail(EMAIL_FROM, EMAIL_TO, msg.as_string())
    mail.quit()

if __name__=='__main__':
send_email()

Yes, here is the code :

import smtplib
fromMy = '[email protected]' # fun-fact: "from" is a keyword in python, you can't use it as variable.. did anyone check if this code even works?
to  = '[email protected]'
subj='TheSubject'
date='2/1/2010'
message_text='Hello Or any thing you want to send'

msg = "From: %s\nTo: %s\nSubject: %s\nDate: %s\n\n%s" % ( fromMy, to, subj, date, message_text )
  
username = str('[email protected]')  
password = str('yourPassWord')  
  
try :
    server = smtplib.SMTP("smtp.mail.yahoo.com",587)
    server.login(username,password)
    server.sendmail(fromMy, to,msg)
    server.quit()    
    print 'ok the email has sent '
except :
    print 'can\'t send the Email'

Visit yahoo account security page here

You'll need to generate an app password - it's an option towards the bottom of the screen. Use the password Yahoo generated on this page in your script.