devise

https://github.com/plataformatec/devise

Ruby

Flexible authentication solution for Rails with Warden.

Mail::Message#smtp_envelope_from

Returns the SMTP Envelope From value of the mail object, as a single
string of an address spec.

Defaults to Return-Path, Sender, or the first From address.

Example:

 mail.smtp_envelope_from = 'Mikel <[email protected]>'
 mail.smtp_envelope_from #=> '[email protected]'

Also allows you to set the value by passing a value as a parameter

Example:

 mail.smtp_envelope_from 'Mikel <[email protected]>'
 mail.smtp_envelope_from #=> '[email protected]'

Source | Google | Stack overflow

Edit

git clone [email protected]:plataformatec/devise.git
cd devise
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Mail--Message-smtp_envelope_from-for-pr

# Commit to git

git add git commit -m "better docs for Mail::Message#smtp_envelope_from"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Mail--Message-smtp_envelope_from-for-pr

hub pull-request

# Celebrate!