I have one large (250 page) document. Each page is a unique letter. This document was NOT created using mail merge, so I don't have a file that I can use to mail merge envelopes.

Is there any way I can create envelopes for the letters using the inside address in the letters and without having to "click > mailings > envelopes > print > ctrl + page down" 250 times?

Thanks in advance for any assistance.