Sorry to inform you that currently we cannot access the subform fields through writer deluge (zoho.writer.mergeAndSend).

This is the premium support answer from zoho.

It means we cannot merge and send thru deluge related records (sub forms) items...

Has anybody suffered from the same ordeal ?

DO you have a workaround ?

If not can you vote for this feature to be added to Zoho CRM and Zoho Writer ?