Set REPLY-TO address for outgoing invoice emails

I am using Office 365 for outgoing emails right now.  My email address for this help@ourdomain.com.  We send our invoices directly from Pulseway also as they're quite nice looking now, better than Quickbooks!  However, any replies made to those email come straight back to to our Ticket Queue.  I would like replies to the invoice emails to go to accounts@ourdomain.com.  Can anyone suggest a way to get this working?

TIA

Colm