Thank you for your patience with this ask. This is a feature is available on Teams web client now. We are currently testing the functionality of extending drag and drop support of file attachment directly from Outlook to Teams app. We will share an update as soon as one is available.
if you have an existing post that you want to show in a different channel, you can edit the message and cross-post. This will add the top-level post to the different channel, but will not include the full set of replies. We will keep this request in mind as we evolve the cross-posting feature in the future and update if the status changes.
Details on cross posting can be found here: https://support.office.com/article/cross-post-a-channel-conversation-in-teams-9c1252a3-67ef-498e-a7c1-dd7147b3d295.
The engineering team is continuing to work on adding support for multiple accounts on desktop clients. We will first launch support for 1 work/school account and 1 personal account so users can enjoy Teams for work and personal side-by-side. Windows and MacOS. Support for multiple work accounts is still being worked on and will come at a later date.
You can track status via the roadmap here: https://www.microsoft.com/microsoft-365/roadmap?searchterms=68845.
An error occurred while saving the commentBruce commented
This really needs to be a priority for anyone who doesn't work exclusively for a large corporation. Teams is better than Slack for our needs, but until this problem is solved, like everyone else, we can't migrate. Shouldn't take forever to sort this out - can't require magic.