Simple field value change via email

Simple field value change via email

Hi,

I'm having real problems trying to create a simple verification system via email...

In theory the Agent creates a record which sends an email to an external client containing details of the record. On the email there is a link that the client clicks which updates the value of a field in the associated record.

I have tried (with no success) to send the email with the record ID in the hyperlink which points to a stateless form, however this has raised some issues. I don't want the client to have to log in, I simply want the field to change and for the user to be directed to a page that thanks them for submitting their response.

Any ideas how I can achieve this?