When attaching big images files, offer to resize them to a more acceptable dimension/size.
There were a few plugins that could do this:
- https://addons.thunderbird.net/en-US/thunderbird/addon/shrunked-image-resizer/
- https://addons.thunderbird.net/en-US/thunderbird/addon/auto-resize-image/
but they stopped to work once 102 was out. They also had some QA problems like:
- https://github.com/darktrojan/shrunked/issues/48
This kind of behavior is already seen in messaging apps like Messenger, WhatsApp, Signal, etc, where images are resized (with the option to send in its original quality).
A nice feature could be to do it also for video.