Yes there is an option for Sending Email via SMS with NCell. NCell provides SMS

Moreover, it also supports the other way to deliver SMS via Email.
More details on this service from NCell is available here -
http://www.ncell.com.np/prepaid/services/data/sms2email
However, there is no such service being provided by Nepal Telecom.

Next is the service provided by Sparrow SMS (http://sparrowsms.com)
Sparrow SMS provides SMS to Email service through its shortcode 4001. The message
syntax for sending Email through SMS is as follows:
TO<space>Email-Address<space>Email Text
Cost per SMS is Re 1 and has no activation charges. It works for both Nepal Telecom and NCell GSM users. A nice HTML email will be delivered to the receiver’s mailbox.