Show popup window with URL before clicking link in HTML mail

Checklist

• I have used the search function to see if someone else has already submitted the same feature request.
• I will describe the problem with as much detail as possible.
• This issue only contains a request for one single feature, not multiple (related) features.

App version

6.000

Problem you are trying to solve

When reading HTML mail that includes links, these links can have a different text than the URL that is opened when clicking on it.

The following two scenarios may happen:

• URL text is "Open customer portal"
• URL text is "https://some-safe-looking-domain.com" but the URL is "https://malicious-site.com"

This is a trick that is often used in phishing mails. When using K9 Mail, users can never be sure about the link destination.

Suggested solution

Open a popup window when clicking on a link that shows the URL. There could be two buttons "Open link" and "Cancel".
(This is what the FairEmail app currently does.)

I would propose that this behavior should become the new default. However, users should be able to disable the popup in the settings.

Screenshots / Drawings / Technical details

No response

No files, tests, or entry points are named in the issue. Start by locating the HTML-mail link handling and the settings area for user-configurable behavior. Done means links show their destination with Open link and Cancel actions, with a setting to disable the popup.