carrierwave

https://github.com/carrierwaveuploader/carrierwave

Ruby

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

Mail::Message#raw_source

Provides access to the raw source of the message as it was when it
was instantiated. This is set at initialization and so is untouched
by the parsers or decoder / encoders

Example:

 mail = Mail.new('This is an invalid email message')
 mail.raw_source #=> "This is an invalid email message"

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-raw_source-for-pr

# Commit to git

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

# 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-raw_source-for-pr

hub pull-request

# Celebrate!