Adding multiple E-mail addresses

edit-key trust

Source

• https://withblue.ink/2020/05/17/how-and-why-to-sign-git-commits.html#adding-multiple-emails

gpg --edit-key KEYID

In the GPG prompt:

gpg> adduid

Again, give it the full name and e-mail address.

Now, trust the new identity:

gpg> uid 2
gpg> trust
#Type "5" (for "I trust ultimately")

Finally, save the changes:

gpg> save

Repeat for as many e-mail addresses as needed.