All our official communications are sent by mail, because we can't use email. You talked about the 25% of volunteers who don't use digital tools. I need to point out that only 10% of the seniors we provide home support to use digital tools.
That means 90% of the seniors we work with don't use those tools. They don't have an email address, a computer or a cellphone. That means we have to use the mail to send them our official communications, or call them.