On Thu, 22 Jan 2026 18:17:54 +0100 <[email protected]> wrote: > On Thu, Jan 22, 2026 at 08:17:56AM -0700, [email protected] wrote: > > Hi, > > > > Most messages with attachments are displayed in RoundCube Webmail > > with an openable menu presenting options Open and Download for each > > attachment. > > Attachments are just one special case of MIME multipart messages. > Another would be "alternatives" -- just (in some way) the same > stuff presented in different ways, say as plain text and as HTML > (to stay with your example). That could also be PDF, Libre Office > Writer... you name it. > > In the alternatives case, your mail user agent chooses whatever > is most "convenient" (something you can often configure). > > See the MIME description here [1] for the whole kaboodle. > > My guess is that those offered for download are "attachments" (i.e. > have the "Content-Disposition: attachment" in MIME parlance, whereas > those being shown have "Content-Disposition: inline" and are (one > of) several alternatives. > > Does your mail client have a way to show you the mail "as is"? > > I don't see anything earlier in this thread, so if it's RoundCube, then yes, it can show the source. I use it for the odd occasion when I want to see HTML from a trusted sender, as I normally run a client with text only and no HTML plugin installed.
-- Joe
