Sendgrid unique Id pass between email and website

Hi,

Is it possible to send a unique Id via a triggered email using sendgrid? then transfer this id back to the website when the user clicks a link/button in the email?

What I’m trying to achieve is that an outstanding balance can be paid without the user needing to login to the site. Currently I have a admin page that I can send a triggered email to the client with reminder and a link to the website but currently they need to login and navigate to the relevant members page and then pay.

What I’m trying to achieve is that when the client receives the reminder email, the link will direct them to a payment page on the website that would run a query using the Id showing their outstanding balance.

I have payment set up via Stripe and the triggered email is also set up. I just need to be able to pass an Id from the website > triggered email > back to the website allowing me to show the relevant balance to the relevant customer.

Thanks in advance!