Trying to automate a calendar notification by sending an outlook calendar invite via python. I would like to send the email from a separate email address. In python's email package, you can use sendmail() to specify the from_address and to_address; however, I cannot seem to figure out how to do this for an outlook invitation via win32com.client. I had already tried using the icalendar package to automate this process, but the ics file that is attached to the email 'is unrecognized'. Using win32com.client, I have been able to generate everything that I want in my invitation; however, I am still unable to figure out how to specify the sender. import win32com.client as win32 from datetime import datetime import pytz tz = pytz.timezone("US/Pacific") start_time = tz.localize(datetime(2018, 2, 01, 16)) subject = 'The Best Meeting Ever' duration = 30 location = 'Home' recipient = 'recipient@example.com' sender = 'sender@example.com' outlook = win32.Dispatch('outlook.application') # CreateItem: 1 -- Outlook Appointment Item appt = outlook.CreateItem(1) # set the parameters of the meeting appt.Start = start_time appt.Duration = duration appt.Location = location appt.Subject = subject appt.MeetingStatus = 1 # this enables adding of recipients appt.Recipients.Add(recipient) appt.Organizer = sender appt.ReminderMinutesBeforeStart = 15 appt.ResponseRequested = True appt.Save() appt.Send() when I send the email to my coworker, even though the sender is not my email address, he is receiving the invitation from my personal email and not 'sender@example.com' Continue reading...