jasonkarns/readme.md

## readme.md

      
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Configure git.

# ~/.config/git/config
[sendemail]
  confirm = auto
  smtpServer = smtp.gmail.com
  smtpServerPort = 587
  smtpEncryption = tls
  smtpUser = <gmail email address>

Configure Authentication.

I believe the simplest setup is to create an application-specific password in Google dedicated to git.
Google Account -> Security -> Signing in to Google : App passwords

This password must be configured in git, but should be kept outside of your main gitconfig (which is likely versioned via a dotfile repo?). To do that, I use git's [include] directive.
# ~/.config/git/config
[include]
  path = config.local # (relative or absolute path to the other config file)
# ~/.config/git/config.local
[sendemail]
  smtpPass = <app-specific-password>
Alternatively, check out https://github.com/google/gmail-oauth2-tools/tree/master/go/sendgmail which supports authenticating to GMail with OAuth2.

Determine your revlist.

To send a single commit, just use the sha. To send a range of commits, you can use start_sha..end_sha. Most likely, you'll want to send the commits made to a branch that are missing in upstream. For that, you would use: upstream/branch_name..branch_name
You can also use relative numbers to indicate the "previous X commits". e.g. git send-email -3

Send email:

git send-email <revlist> --to <other@user.com>


If you receive an error like this:

Can't locate Net/SMTP/SSL.pm in @INC (@INC contains: ...

You may need to upgrade/install the Net::SMTP::SSL or IO::Socket::SSL packages:
sudo -H cpan Net::SMTP::SSL
sudo -H cpan IO::Socket::SSL

Advanced: configure multiple identites.
You may configure multiple smtp servers and switch between them with identities.

[sendemail "gmail"]
  smtpUser = jason@gmail.com
  smtpServer = smtp.gmail.com

[sendemail "outlook"]
  smtpUser = jason@outlook.com
  smtpServer = smtp.office365.com
  
[sendemail]
  identity = outlook