Give 2 weeks to the pacakgers to update the pkgbuild before making an orphan request. As reported in comments last version (1.7.4) have a major bug which prevents users from adding accounts and the previous version (1.7.3) have been retired from releases on github Il 03/03/20 20:08, notify--- via aur-requests ha scritto:

testbird71 [1] filed an orphan request for mailspring [2]:

The package is outdatet some versions.

[1]https://aur.archlinux.org/account/testbird71/ [2]https://aur.archlinux.org/pkgbase/mailspring/