There are several screen readers available on the market today. Arkenstone WYNN is a screen reader that is available from Voila Technology,Inc. 54 Castle Road, Rochester, NY 14623 , 1-716- 321- 1451 or Directly from Arkenstone, NASA Ames Complex, Bldg. 23 PO Box 215 Moffet field, CA 94035-0215. 1-800-444-4443 this is pricey at $995.00.
A scanner with a document feeder would be a help as well. Some one could edit the threads and print any titles that a person with disabilities my want and then the client could self load the docs and the scanner can send them to the reader.
How this hooks up to an E-Mail source I can't tell you but the tech support people at Arkenstone can surely explain it.
The Commision for The Blind and Visually Impaired in any state should have other readily available info on these devices.
I will keep this thread under constant monitoring because disability access is my primary employment. I may already have many pieces of equipment that you will find intersting.