On Fri, Sep 12, 2025 at 12:13:07PM +0800, usharerose wrote:

Hi, Git Community,

I'm a Git user and curious about a specific aspect of Git's design
regarding the 'user.email' configuration.

Git allows any kind of values without restriction when setting
'user.email' via 'git config' (e.g., `git config user.email
"not-a-valid-email-address"`).

That's a valid email address on the local system. It will get expanded into
not-a-valid-email-address@localhost (or whatever domain is configured with the
local MTA).

I'm interested in understanding the design philosophy or historical
reasons behind this 'lack' of validation.

This may be insightful: https://e-mail.wtf

:)

-K