Formula in email Reply To field isn't accepted, but is accepted for To field

[Gaius]

I have added an email task to my application.  I'm able to set a variable as the formula for the "To" field, but when I use the same formula for the "Reply to" field, it doesn't accept it. This seems like a bug to me. Thoughts?

General settings showing both fields:

Accepted To field:

Reply To field is not accepted with the same formula:

[Craig_QREW]

From what it looks like is that the [Assignee] is a list of email addresses. You may only set the "reply to" to a single email address at a time, it can be dynamic but it must produce a single email. I recommend an ANY(SELECT()) expression to get that one reply email address. 

Also from the image above this expression is not evaluated in context of a row so you cannot use a column as that would produce too many values. If you need any help setting this to a value I can happily do that just let me know what I can do to assist. 

Craig

QREW Technologies

[Gaius · Accepted solution]

Thanks, Craig. 

Based on your suggestion, I used the following formula to get just the first email: INDEX(SPLIT([Assignee], " , "), 1)