I've been working on solving this problem for a while, and hoping someone can help me come up with a solution.
Basically what I'm doing is creating an EE Grid field with a title, date, and description. The way I want Postmaster to trigger is based on the Grid date field.
When a date is 5 days in the future I want a reminder email to be sent. I can't seem to figure out how to do this? Currently I have the Grid field name "calendar", and for testing I put this in the "Post date specific" field of the Postmaster Parcel setting:
However, nothing happens if I add an row with today's date? If I change the trigger to "Edit" an email gets sent, but it also gets sent every time one of the rows is edited or a new row added to the calendar Grid field? Not what I want, I only want it to trigger 5 days prior to the date entered? How can I accomplish this?
I believe it should be possible with Postmaster, but can't seem to figure out how to do it??