A guide to generating UUIDs with Sendy
[Email] pulls in the recipients email address
[currentdaynumber] pulls in the current day
[currentmonthnumber] pulls in the current month
[currentyear] pulls in the current year
By combining these tags we can successfully create a dynamic UUID and our key parameter would therefore look something like this:
Custom tags could also be created and added to the default personalization tags above to ensure each key value is unique.
NOTE: the same UUID must always be passed into the key parameter of both the anchor and image tag