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Geez, it's not like quoted-printable email hasn't been around for 
a long time :)

Not sure what the solution here is - how does Eudora normally 
handle long URLs? Sounds like it would normally break them 
over a line.

I suppose the best way to "fix" this issue will be to handle 
replies to the email, finishing the registration off that way 
(somehow snarfing the OTK from the email body).

Is it reasonable for you to work-around this issue? I'm not likely 
to be able to modify the mail gateway to handle this any time 
soon.