Epson Home Expression Xp-335 - which e mail programs does it support, e.g Mozilla Thunderbird? At present it is showing only Windows Live Mail and cannot change.
It's not specified what are the exact applications supported by the Epson Attach to Email, however, based on my experience I know that this type of applications detect email clients when they're installed, therefore, install Mozilla Thunderbird for example, then reboot the PC and after that access the same Settings menu. You should be able to choose another email client by now.