trigger an action on new email using the python win32com module with outlook

Question

is it possible to trigger some action when a new mail arrives in outlook using the python module win32com

pseudocode

 while 1
        if a mail arrives
            do x

Edit: I'm not allowed to use "run script" rule

0m3r · Accepted Answer · 2023-01-08 17:51:12Z

4

Use DispatchWithEvents function for Outlook NewMailEx event

Example

import pythoncom
from win32com.client import DispatchWithEvents


# Event handler class for Outlook events
class OutlookEventHandler(object):
    @staticmethod
    def OnNewMailEx(EntryIDCollection):
        for ID in EntryIDCollection.split(","):
            item = Outlook.Session.GetItemFromID(ID)
            # check item class, 43 = MailItem
            if item.Class == 43:
                print(" Subj: " + item.Subject)


if __name__ == "__main__":
    Outlook = DispatchWithEvents("Outlook.Application", OutlookEventHandler)
    olNs = Outlook.GetNamespace("MAPI")
    Inbox = olNs.GetDefaultFolder(6)
    pythoncom.PumpMessages()

Items.ItemAdd event (Outlook)

Example

import pythoncom
from win32com.client import DispatchWithEvents, Dispatch


# Event handler class for outlook events
class OutlookEvent(object):
    @staticmethod
    def OnItemAdd(item):
        """ Name    Required/Optional   Data type   Description
            Item    Required            Object      The item that was added."""
        print(f'The item that was added = {item.Subject}')


if __name__ == "__main__":
    outlook = Dispatch("outlook.Application")
    olNs = outlook.GetNamespace("MAPI")
    inbox = olNs.GetDefaultFolder(6)

    event = DispatchWithEvents(inbox.Items, OutlookEvent)
    pythoncom.PumpMessages()

edited Jan 8, 2023 at 17:51

answered Jun 22, 2022 at 5:24

0m3r

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2 Comments

DS_London Over a year ago

This is the way to do it. One variation is to use win32com.gencache.EnsureDispatch() then WithEvents() as a separate call. This will cause gen_py to create the constants, so you can write win32com.client.constants.olMail rather than 43. Would then also need to cast item using CastTo(IMailItem) with this approach. A side-effect is that it also enforces case-sensitivity on methods/properties, which can prevent unexpected behaviour down the line.

0m3r Over a year ago

stackoverflow.com/a/75000015/4539709

Dmitry Streblechenko · Accepted Answer · 2022-06-21 16:55:48Z

0

You can create a rule that runs a VBA script. That script can do anything you want it to do, including running your Python code.

answered Jun 21, 2022 at 16:55

Dmitry Streblechenko

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2 Comments

Marco Nappi Over a year ago

I'm not allowed to use the "run script" rule

Dmitry Streblechenko Over a year ago

Then your only option is to track the Application.NewMailEx event either from an external app or from a COM/VSTO addin (no Python).

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