The problem:
When I’m sending an invitation from eM Client - e.g. for a Teams meeting - to a user who works with MS Outlook, the invitation seems to be empty (date and time are displayed but no description). Consequently, I often receive complaints that no Teams link was provided or requests for details about the meeting.
The problem seems to have caused some forum discussions before, e.g.:
The cause:
According to my superficial research
- The invitation (ICS file seems to be perfectly in order)
 - Outlook seems to process the invitation (.ics file) correctly
 - However, Outlook seems not to display the DESCRIPTION part of the ICS file, but the message body of the mail that has transferred the ICS file, i.e. the invitation mail. As this invitation mail - when generated by eM Client - has an empty body, nothing is displayed here.
(I am fully aware that many may consider this a malpractice by Outlook. Unfortunately, as most of my business partners are using Outlook as their email client, it is an effect that reflects badly an me and - yes, pretty unjust - on my email client.
 - Once accepted and copied into the Outlook calendar, the invitation is displayed correctly (including the description).
 
The proposed solution:
EM Client should copy the text of the DESCRIPTION of an VEVENT also into the message body before sending the invite as an email.
P.S.: I can provide screenshots to illustrate the problem.