Short definition
Missed-call text-back is an automation that sends an instant SMS to any caller whose call goes to voicemail, recovering leads that would otherwise be lost forever.
In depth
Studies consistently show that 60–75% of first-time callers to a service business do not leave a voicemail; they hang up and try the next listing. Missed-call text-back closes that leak. The instant a call goes unanswered, the system fires an SMS like 'Thanks for calling [Business] — sorry we missed you. Can I help over text?' Conversion on the resulting text thread is high because the lead is in-market and was interrupted, not turned off.
Example
An HVAC contractor enables missed-call text-back. In month one they recover 23 missed calls into text conversations and book seven additional jobs.