Being able to send email to Teams is potentially very useful. The webhook is not available to me (I'm trying to find out why), so email is the only choice.

Embedded tables seem to work - they're not ideally formatted, but they do appear. I can embed a PDF file and it appears in the channel's message and also in the channel's files. But if I try to include an embedded graphic, nothing happens - the message just goes into the void and doesn't appear anywhere. The same email sent to my personal address appears as expected.

Have you worked with graphics in Teams at all?