Option to make Mailspring the "default mail client" on Mac OS doesn't work


I used the option to put Mailspring as default client but it doesn’t work:

I had to open Mail and use its app selection menu instead:

To Reproduce…

Steps to reproduce the behavior:

  1. check the “default mail client” option on Mailspring
  2. try to click on a “mailto:” link (tested on Brave)
  3. Mail opens instead


  • OS and Version: Mac OS 11.6.1
  • Installation Method: .app
  • Mailspring Version: 1.9.2

Additional Context

Previously I had Thunderbird as default client.