Does anybody know a way to create a rule in Gmail to forward emails from a specific contact or email address?
If so, is there a way to forward to SMS?
I've tried playing around with the filtering but this needs a global forwarding address?
There are several services available online that will convert e-mails to SMS (usually for a small fee).
Gmail allows you to add a forwarding address, as long as you can verify that you own the account by clicking the link in the verification mail. Once added, you can create a filter that will forward only selected e-mails, such as only e-mails coming from a specific address.
Setup a filter that is
from:email@example.com that forwards to an address you've added in. Almost every phone carrier offers a free email → SMS converting with your plan.
phonenumber = your 10 digit phone number.