Steam Chat History Folder

I am receiving notification in the O365 groups with Subject:One of your mailbox folders is approaching a quota limit.Your mailbox folder 'Conversation HistoryTeam Chat' is approaching a quota limiting the number of messages per folder. It contains 900612 messages.Please reduce the number of messages in this folder by deleting items or moving items in this folder to a different folder.This address is an O365 group that also uses teams.I can't find this 900612 messages. For this I have 2 questions:1. Where do I have to search to find these?2. Where can I either delete all, or only some of them messages to reduce this big number?

One-to-one chat. One-to-one chat data is stored in a hidden folder within your mailbox. This folder contains all of the conversations that were had in that chat. Each member of the chat retains their own copy. This folder only exists for the purpose of data retention, litigation holds, and compliance.

The search is not the problem. The search shows me only the number and where these entrys are, what I also have from the email as info.

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I need the info how or where can I delete this ( and not manualy each message from the Teams conversation ). At the moment as in the following link visible, this is not possible:(manual delete at 900k entries is not helpful:)Is this Microsoft post still up-to-date or can you automatically delete messages from teams? - eg older than 1 year:? - eg over Powershell to set such a setting to do this automaticaly.I have now deleted some channels and there are a lot of messages. No I have thesecond question - when is this number updated and if I do not get this email tomorrow ( if I have deleted so much that I'm far below the 1,000,000 messages )? Hello,Yes, the link you posted is currently up to date information.Although, there is no such way to delete over Power Shell command.Since, you have deleted some channels that had lot of messages so you will no longer get email until you will reach quota limiting the number of messages per folder.

Keep in mind the warning for number of messages per mailbox folder start from 900,000.You can keep below that level to avoid warning message.I understand it is not convenient way, let me know if you want link to provide your feedback to Teams.Thanks,-If you find this useful information, feel free to mark answer as it will help others. 2 days ago we deleted almost half of the channels in the affected team and thus also a lot of messages. Unfortunately yesterday and also today the email came with increased number of messages:( Can it be that they end up in the system in the trash and wecan expect a smaller number of messages in a few days?Apparently, the number is not automatically lowered or it takes a while. Does anyone know exactly how the system works and when it is detected and displayed by the system with the clearing of the deleted channels?Can somebody from Microsoft possibly pass on the request internally to the developers of teams and there ask how one should proceed in such a case or how long one must wait after one has deleted messages to the email with the exceeding of the 900k news nolonger gets.