With the advent of the email gateway, its should be a SMOP 🙃 to send a text to my phone whenever someone calls CQ. I can now sit comfortably in my recliner waiting for a CQ. The text would include the Band, Callsign, and SNR (and, I suppose, the time and slot just for consistency).
I can think of additional extensions:
Add Broadcast messages as an option
Add enable/disable button on the main screen
Block texts during certain times
Text when a particular station beacons
There are several lists of cell phone providers with SMS gateways including https://www.quertime.com/article/email-to-sms-gateways-complete-list/
I think this is a good idea, to WhatsApp and/or email someone when there is a vmail or a message for them.
I think WhatsApp and email are more popular than Telegram.