$ cd /Applications/Android\ Studio.app/Contents/jre
$ mkdir jdk
$ cp -R Contents ./jdk/Contents
[1] https://github.com/flutter/flutter/issues/76215#issuecomment-864407892
$ mkdir jdk
$ cp -R Contents ./jdk/Contents
Android: Menu (on right top) > Settings > Select Account > Signature
iPad: Settings > Mail, Contacts, Calendars > Signature
PlayBook: Open Mail App > swipe down from top > Settings > Email Preferences > Select Account