I have been tasked with creating HTML buttons to approve or reject workflow items instead of replying. Is this a possibility by creating a custom href?
Have you looked at using Actionable Messages? ( Lights! Camera! Actionable Messages!! ). This presents your task options as buttons within the task email.
Weird. Try this one:
Here is the help files link as well for more of the configuration and prereq's info.
To add more detail, my client essentially doesn't want to type "accept" or "reject" and wants HTML buttons in the email. So my only solution ideas so far are to have a webservice that creates the email for him, or figure out how to update the workflow using the Nintex API