Subject is going blank in Integration API's case as we do not take any specific input for subject.
Code changes done to show email template subject along with form subject. if form subject is not present, then only email template subject will be shown.

E.g : as per new implementation subject will be : Review and Sign Documents- I9 form

Here Review and Sign Documents is the email template subject and I9 form is the subject given while sending the form.

If subject is blank, then subject line of delinquent email will be Reminder: Review and Sign Documents

CC: Swapnil Pandhare,Rohan J Khandave,Ganesh Sadawarte

Environment: OneIm
PreProd
Email verified: Review and Sign, New User

API > Subject is appearing
UI > Email subject with Send Forms subject appearing.

Scenarios worked as expected.

Monika Demla, to verify this jira, please send the document and in midnight after the service is run, you will receive an delinquent email.

Swapnil Pandhare Rohan J Khandave Ganesh Sadawarte Ramya Tantry Samir

okay, sounds good. I can only check any of the functionality on CBinternalbeta