[kmail2] [Bug 431426] New: Feature Request: Failed signature message is too small and non-prominent

[Christian Wolf]

https://bugs.kde.org/show_bug.cgi?id=431426

            Bug ID: 431426
           Summary: Feature Request: Failed signature message is too small
                    and non-prominent
           Product: kmail2
           Version: 5.15.3
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: ChristianLupus at web.de
  Target Milestone: ---

Created attachment 134733
  --> https://bugs.kde.org/attachment.cgi?id=134733&action=edit
Screenshot of failing signature

SUMMARY
When a message is signed using S/MIME (and probably GPG), a small red or green
border is put around the message and a small information block is printed above
the message (see screenshot).

This message is ok for correctly signed messages as one does not want to bother
the user with a working infrastructure.
However, the failing case should be made more prominent. The message should be
made bigger and "brighter". Especially for me (partly color blind), it is
almost impossible to get the color "as a byproduct". I have to read the text
that can be easily taken for the message of a successful signature.

So, I vote to make the text at least 3 times bigger in case of failure and
maybe even a thicker border. One could add this as an optional setting for
disabled people in the settings if you do not want to clutter the default UI.

STEPS TO REPRODUCE
1. Open an email with valid S/MIME signature
2. Open an email with invalid signature

OBSERVED RESULT

The messages are very close in the text appearance.

EXPECTED RESULT

More prominent warning of a failed signature check

SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.76.0
Qt Version: 5.15.2

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