Mail notification uses the first name of displayname (which might be the last name)
I would consider this more as a bug.
In all email notifications it looks like it uses the first part of the displayname property (unitl the first space).
AD Property Displayname uses Lastname Firstname
Based on Screenshot this is HOBMAIER Dennis and Maierhofer Andreas.
The Result will be:
LASTNAME (of other participant) sent a chat message.
See the attached screenshot.
Change this to use AD first name attribute.
I cannot believe that this has not more upvotes. The Link that is listed that says that this bug is already in another thread leads to a slightly different issue. Here we want the emails that result from actions in teams to be with a different name syntax, not the @mentions in teams itself.
As a solution, there are suggestions to use the full display name. Because the mails start witch "Hello ....." that will lead only to slightly better results.
I agree with the person who shared the idea to use the First Name.
That would in consequence require, to change the syntax of the mails itself if looked at from an international perspective.
I receive the mails in German. There, there is a distinction between the form used in Letters, similar to "Dear Mr. Muller", which is used today in the German Variant (Incorrectly it says today "Hello Muller") to the more modern form used in day to day business terms where you indeed address a person by their first name.
I think its 2019 and Microsoft should, like many other modern companies, adopt this more friendly form of addressing people (Also internationaly) on a first name basis.
That brings us back to the new format where it says:
someone has mentioned you
Jemand hat dich erwähnt
Today in German:
Jemand hat sie erwähnt
really hope this gets upvoted and reaches the devs
Mark Volders commented
This bug is added in two threads: https://microsoftteams.uservoice.com/forums/555103-public/suggestions/36162256-use-firstname-and-lastname-attributes-not-display