How many of you all here, using a hosted solution remembered to setup DKIM on their custom domain? hostname alignment can aid in email deliverability, i believe.
For reference, if you were using office365 you would take the steps outlined here: https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/email-authentication-dkim-configure?view=o365-worldwide
Lastly... if you don't bother, any good reason to skip the domain alignment step?
None. If you wanted paid you would've charged for it.