Missing attachments on iPhone/iPad

Sometimes you see that there is an attachment included in an e-mail, but the whole e-mail has not been loaded yet. Thus you could click on "Download full message". After having done that, the attachment vanishes without trace.

Also sometimes you think there should be an attachment included, perhaps the mail text suggests this, and you do not see any attachment.

In both cases please use the mobile view of the web browser and check and get the attachment.

This problem occurrs occasionally on iOS devices (iPhone/iPad) and is a known problem since at least 2012 without any fix from Apple's side up to now.