I am not sure if this has already been answered or not so my apologies if it has, I just can't find it.
We have a number of filters that some executive subscribe to. So they get a subscription based e-mail on new issues. We are looking to add some custom fields to that e-mail but unlike the e-mail templates for standard issue updates the subscriptions seem to have their own format.
I read somewhere that the only way to do this is through recompiling part of the code around the subscriptions? Is this true? Is there any way to do this without recompiling code?