Many Leagues have been signing up for Google Workspace for Non-profits (formerly Google G-Suite). This is a free service for non-profits that allows you to have email addresses using your League domain. It also provides Google Docs.  

Here is more information - click Get Started to apply for the program
https://www.google.com/nonprofits/g-suite/compare/


If you prefer, Microsoft has a comparable service called Microsoft 365 for Non-profits. See here and click Get Started to apply for the program: https://www.microsoft.com/en-us/nonprofits/microsoft-365-plans-pricing-grants