[exim] Easy Disclaimers with Exim?

According to Exim's site, it is difficult and not recommended to use
disclaimers.

However, most companies still require it, as it at least serves as some form
of disclaimer in case of error.

Does anyone know of a really easy way to append a disclaimer at the bottom
of all outgoing emails?

This disclaimer would also need to be size 8 arial and appear about 4 lines
after the bottom of the original message =)