I have a requirement to send email alert when seminar attendee(custom object) is selected as contact (look up object) and seminar status as "attended". But when same contact is selected for another seminar attendee and status as "attended", email should not be sent . Only after 30 days if new seminar attendee is selected for this contact , then new email alert should trigger. I was able to set up process builder for this seminar attendee object and send email alert but need logic for 30 day calculation before another new email can trigger.
I tried to set up a formula field "Email Sent" on contact object to check true when first email is sent out and calculate 30 days.
Flow trigger to compare last modified date of seminar attendee under contact to be more than 30 days from previous seminar attended under same contact before a new email is send out.
Can someone please with flow triggers. I am completely new to flows