Conversations involving multiple participants, allowing collaboration and information sharing in Teams
You’re welcome.
I understand your frustration with the inconsistency between Outlook and Teams. Unfortunately, Teams does not support the same functionality as Outlook for creating group chats with multiple email addresses at once. This is a limitation of the Teams app that many users have reported and requested to be improved.
As a workaround, you can try to create a contact group in Outlook with the email addresses of the people you want to chat with, and then use that group name in the Teams “To:” field. This way, you only have to enter one name instead of 120.
Alternatively, you can create a team or a channel in Teams for the people on the 10th floor, and then use the @mention feature to notify them of your messages. This may be more convenient than creating a group chat, as you can also share files, apps, and other resources with your team or channel members.
I hope these suggestions are helpful for you.
Thank you and have a great day!