You can leverage the 'Increase property value' action in workflows for this.
For example, you would create a number property first, 'Number of times date property was changed'.
In a workflow, you can re-enroll contacts whenever the date property is known. (To set up re-enrollment like this, click into the enrollment field in a workflow and switch into the re-enrollment tab in the right sidebar.)
The next step in this workflow is to increase the value of the 'Number of times date property was changed' property by +1.
After setting this workflow live, the property is counting how many times the date was changed. You can use 'Number of times date property was changed is equal to 2' as an enrollment trigger for whatever communication you want to send.
Let me know if you get stuck at any point and if you have any follow-up questions!
Karsten Köhler HubSpot Freelancer | RevOps & CRM Consultant | Community Hall of Famer
Ticket property- Send mail if property changes second time
Many thanks for your reply. So now I have created the date property , and for the first time that this date is known, I will leverage the increase property value by 1. So after this is another workflow, I will check if the property is equal to 2, I guess I can apply the automation of the email?