Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hello
I’m Adeyemi and I’d be happy to help you with your question.
I understand that you're looking for a third-party solution to migrate all Teams chat history, including chats with internal and external users, during a Cross Tenant Migration
You might want to consider the following options:
- Kernel Microsoft Teams Migration tool: This is a third-party software that can help migrate Microsoft Teams chat history https://techcommunity.microsoft.com/t5/microsoft-teams/migrate-chat-history-teams/td-p/1397713
- Apps4Pro Migration Manager: This tool can migrate Teams chats and is the only migration app which does real migration of chats (not conversation history folder alone, users can see the chats in Teams post migration) https://techcommunity.microsoft.com/t5/microsoft-teams/teams-chat-history-migration-from-one-tenant-to-another-tenant/td-p/3048483
Please note that the effectiveness of these tools can vary depending on your specific needs and circumstances.
I hope this helps.
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Kind regards, Adeyemi