Mail_to link character limit?

I am creating a mail_to link in my app which contains all the
information the application needs to send. This can result in mail_to
links that would be, on occasion, very, very long. When the message
body is long it seems the mail_to link is concatenated at around 2083

Does anyone know of a way around this? Is there a limit on the link’s
character length because of an html limitation, or is it a ruby/rails