haihappen/simple_postmark — pull request #6 by croby (2012-11-13 00:51:21+00:00)
Title: Prefer hash-access to instance access for certain properties

Prefer the mail hash-access method on the instance to the mail instance method, as the hash-access method returns additional useful information

```ruby
# given a 'reply_to' key, and a reply_to value of 'Test '
public_send(key)
=> 'test@test.com'
self[key.to_sym]
=> 'Test '
```