Contexte :
- In my exchange I setup one email account (odoo@mydomain.com) with ALIAS : alias1, alias2
- In odoo > Settings > Technical > Incoming Mail Servers, I added + confirm this email account odoo@mydomain.com
- In Expenses app configuration > I setup new alias alias1@mydomain.com :

- by the way in odoo > Settings > Technical > Alias > alias1 still have alias Status "Not Tested" :

- Then I send an email to alias1@mydomain.com , it is well received by my email account, it seems it is even "read" by odoo, but it never create new "expenses" :

This is headers of sent email :
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: person1@mydomain.com (note : it is me, and it exist as odoo authenticated user)
To: alias1@mydomain.com
Subject: P 10.00
Thread-Topic: P 10.00
Question :why odoo can read email but cannot detect that "To" is to alias to create new "expense entry"
To start the debug process, is the expense created when you send email to default expense@mydomain.odoo.com? And when you sent email to alias, has "Not Tested" changed to "Tested" (that means odoo has message)?
please apologize, i updated topic. It is onpremise , i do not have (odoo . com email)