[ic] sending mail in interchange 4.6.5

[John Allman]

Hi - i'm attempting to send a mail to us when a user accesses a 
particular page (the end of a sign up process (for a new feature on the 
site)) but, after much rummaging i've found that the [mail] tag does not 
seem to exist in ic 4.6.5. Unfortunately there is a good reason why i 
cannot upgrade (it is on my to do list though).

I can't find documentation on how to do this in earlier versions of 
interchange. Looking about the source has led me to believe i might be 
able to use Vend::Order::send_mail? Can anyone show me how i could do 
this? When i try calling it from a perl block i get Undefined subroutine 
in the error log.

thanks

John Allman