Creating a valid email address from a name and email, using the Ruby Mail library. Used to prevent invalid headers.

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If you are taking user input for name and email, then unless you very carefully validate or escape the name and email, you can end up with an invalid From header by simply concatenating strings. Here is a safe way:

require 'mail'
address = Mail::Address.new email # ex: "john@example.com"
address.display_name = name # ex: "John Doe"
# Set the From or Reply-To header to the following:
address.format # returns "John Doe <john@example.com>"

From http://stackoverflow.com/a/8106387