Little Git Tricks: Use .mailmap to Merge Different Authors
.mailmap file ==> Name you want to keep <email> Name you no longer want <email>
John Doe John Doe
John Doe John Doe
John Doe john doe
Max Example Max
before
$ git shortlog -se
1 John Doe <John@Doe.org>
1 John Doe <John@doe.org>
2 John Doe <john@doe.org>
1 Max <max@test.co.uk>
3 Max Example <hi@test.com>
1 john doe <john@doe.org>
after
$ git shortlog -se
5 John Doe <john@doe.org>
4 Max Example <hi@test.com>
