That's long been a gripe of mine. If the links open IN Aquamail, it's ALWAYS Chrome, even though that's not set as my default browser, which is Kiwi.
The only way to get it to use your default browser is to change a setting. Go to Message View and UNCHECK "Open web links in Aqua Mail".
That will cause all links to open in your default browser in a new and separate browser window. No more just using the back button to return to your email list. You'd have to use the Recents button and select Aqua Mail again.
A pain all around. I complained about this years ago to no effect. Other email apps respect your default browser choice. Is Aqua Mail getting kickbacks from Google?
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