Are there any reasons why my Helper methods are not picked up?

Hi
I have a helper method, which converts currency to pounds. Is there any reason why this donest get picked up in the mailer templates, but works thoughtout the rest of the site?

I believe mailers by default don't include helpers. This is by design I think, but it does seem like one of those things that would be included automatically.

You can add helper lines to your mailers in order to give them access to the helpers:

helper :application