2 mail accounts in MacBook Pro Mail, 1 not going out under correct email
I have two mail accounts I'm using in Mail on multiple devices. One is an email associated with and hosted by my business, the other is a gmail. Recently my laptop started sending out my business email under my gmail, even though I have specifically selected my business. It's not doing this on any other devices. Any help on correcting this or what to look for? Thanks.
MacBook Pro