Solved! Go to Solution.
Hi Mike. I am running into a similar situation. I realize it's now almost 5 years later...
As I was writing this I thought of a few other things that I had not tried...and I stumbled upon something that worked! So, here is the solution:
<a href="mailto:?subject=Davidson%20County%20GIS%20Link&body=http%3A%2F%2Fdavidsonco.maps.arcgis.com%2Fapps%2Fwebappviewer%2Findex.html%3Fid%3D2cdd448c6c924b8bbafb5aef8692b8d5%26query%3DArcMap_IMS_620_8%2CPARCEL_ID%2C{PARCEL_ID}" target="_blank">Mailable Link - New Map</a>
The unique id of the map service (from the json) is ArcMap_IMS_620. The unique id of the Parcels layer is 8. And the field name that I am querying is PARCEL_ID.
Hope this helps other people.
Kathryn Clifton, GISP