Jiří Žižka from Emailit answered another user on November 13, 2024 and said our records (including SPF, MX and DKIM) are under our emailit. subdomain, so it would never interfere with your main domain. So if you add a sending domain example.com the SPF will be under emailit.example.com (no interference with Google Workspace or any other providers). You can find that answer here: https://appsumo.com/products/emailit/questions/spf-is-causing-problems-and-not-a-1239468/