In addition to email, instant messages can also be sent to joshwheeler at this domain.
XMPP (originally Jabber) is a free, cross-platform messaging protocol supported on mobile and desktop. It is similar to AIM, WhatsApp, Messenger, Hangouts, Skype, Telegram, Signal, and others, but avoids the drawbacks of walled gardens and centralization.
Give XMPP a whirl with one of the clients listed below.
If you don’t have a server to connect to, Josh usually gives them out to friends for free to support software freedom.
More XMPP clients