So their objecting to outsourcing email to Google because blind people can't read emails from Google... Wait since when can blind people any emails?
The problem is the accessibility software that they'd normally use to facilitate accessing email and other items (like text-to-speech) isn't compatible with Gmail's interface.
There are also things like email-to-braille machines, that take text and generate braille with a mechanical device.
Do you really think that blind people just completely lack access to email?