How to change the font in Quickbooks emails through Outlook

Hello Miconone, 

Welcome to the Community page, 

So the font on the actual invoice your sending you cant change the font. There is nothing in the settings of Quickbooks to affect the outlook in that way, all you can edit is the words that go in the email, but nothing relating to how outlook then formats it afterward. You might need to look into your outlet setting to see if you can change it in there.