(Disclosure: I work for Microsoft, but not as a member of the Microsoft Teams group)
I've released a new version of my Microsoft Teams command line tool which I've called Channel Surf. The existing version lets you re-create your existing Slack channel structure in Teams and bulk add new Teams channel.
My new version is now on GitHub (https://github.com/tamhinsf/ChannelSurf/) and now enables you to:
- Archive Slack messages into HTML files and store them in Teams
- Copy Slack file attachments into Teams
Further details are up on my GitHub page.
How? Slack enables a team owner or admin to download an archive of a their team's history, which Channel Surf scans and then uses in conjunction with the Microsoft Graph API to re-create Slack channels within Microsoft Teams, generate HTML message archive files, and upload these archives and associated file attachments.
It's a work-in-progress - I've only tested this on a couple of small Slack archives. The display of user names, date and time stamps, message formatting, and viewing experience will be improved as I have free time. But for those of you wanting/needing more - there's always the fork and clone buttons to help you get started.
As a gentle reminder, I'm reliant upon public Microsoft Graph and Teams API's. The API's needed to perform a true message import aren't yet available: these include impersonating a user, backdating the creation date of a message, and probably a few other things I haven't thought of.
Hopefully for now, some of you will find this useful in your pursuits.
