This is something i didn't know at first and later got to know it. How late ? 3 years late.
Once you setup a site with Google Domains, you get upto 100 custom email addresses which you can use to forward emails to existing email address. Meaning, i have created a website www.bobbydreamer.com using Google Domains and it provides a feature using which i can/have created a personalized email like email@example.com and when somebody sends an email to this address, i get that email forwarded to firstname.lastname@example.org likewise i can setup around 100 custom alias email addresses.
For a business this could be really useful.
Learning something everyday