carrierwave

https://github.com/carrierwaveuploader/carrierwave

Ruby

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

Mail::Message#destinations

Returns the list of addresses this message should be sent to by
collecting the addresses off the to, cc and bcc fields.

Example:

 mail.to = '[email protected]'
 mail.cc = '[email protected]'
 mail.bcc = '[email protected]'
 mail.destinations.length #=> 3
 mail.destinations.first #=> '[email protected]'

Source | Google | Stack overflow

Edit

git clone [email protected]:carrierwaveuploader/carrierwave.git

cd carrierwave

open

Contribute

# Make a new branch

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

# Commit to git

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

# 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-destinations-for-pr

hub pull-request

# Celebrate!