Hi Gustav_ - there is no leaking and this is not a bug - that was the design choice from Planner to store the attachments in the SharePoint site. Both the plan and the SharePoint site are 'owned' by the group - so not sure why you consider this a leak, although I agree maybe the structure of where they are stored could have been designed differently. Nothing to stop you loading files up to SharePoint and then linking, which is the preferred workflow when using Planner in Teams. Thanks for the feedback.
Hi bcobra - yes, the second option shows up - but it doesn't work and should not be displayed. This is a bug.
Hi Arin Komins I did try PowerAutomate (Flow) but found that Azure Functions gave me the best control and was easier for me to use. I did post a blog on using a Connector too. The very good news is that in the not too distant future the Message Center team will be implementing something similar out of the box 🙂 for Message Center to send to Planner. If you can't wait then see https://techcommunity.microsoft.com/t5/planner-blog/microsoft-planner-a-change-management-solution-for-office-365/ba-p/362360 for my solution. Also good feedback on the Comments. Planner was introduced before Teams was a thing - if they were choosing now the team might very well make a different choice - the current design does create some challenges with the possible ways that can change the behavior of e-mails. No current plans to change the design - but never say never.