Flowdock
method

headers

Importance_1
v3.0.5 - Show latest stable - 0 notes - Class: ActionMailer::Base
headers(args=nil) public

Allows you to pass random and unusual headers to the new +Mail::Message+ object which will add them to itself.

  headers['X-Special-Domain-Specific-Header'] = "SecretValue"

You can also pass a hash into headers of header field names and values, which will then be set on the Mail::Message object:

  headers 'X-Special-Domain-Specific-Header' => "SecretValue",
          'In-Reply-To' => incoming.message_id

The resulting Mail::Message will have the following in it’s header:

  X-Special-Domain-Specific-Header: SecretValue
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