What is missed call text back?
Missed call text back is software that automatically sends a text message to a caller the moment their call to your business number goes unanswered, so the caller gets an immediate reply instead of a voicemail box. Most missed call text back tools stop right there, at a single automatic SMS. FromKai does not. When the caller texts back, Kai reads what they wrote, answers the question, qualifies them, and books them into a real open slot on your calendar.
The distinction matters more than it sounds. A canned auto-reply moves the work; it does not do the work. Somebody on your team still has to read the reply, check availability, and respond. An AI agent closes the loop while the caller still has your name on their screen.
For the background on why the response window is so unforgiving, see the full guide to missed call text back.
How FromKai fits with your phone system
Be clear on this before anything else, because most vendors in this category blur it: FromKai does not answer phone calls. It is not a receptionist, an IVR, or a voice product. It handles text.
Your phone system already knows when a call goes unanswered. FromKai picks up from that moment:
- 01A call to your business goes unanswered. Busy line, after hours, crew on a job. The reason does not matter.
- 02Your phone system or CRM detects the missed call and fires a webhook into the FromKai API. This is configured during setup.
- 03FromKai runs its pre-send checks: national and state Do Not Call registries, a known-litigator suppression list, phone validation, and your own suppression list.
- 04Kai texts the caller. Seconds, not minutes. Day, night, weekend, holiday.
- 05The caller replies, and Kai actually responds. Not a menu. Kai reads the message, answers what was asked, and asks what it still needs to know.
- 06Kai qualifies and books, checking real calendar availability and offering times that are genuinely open. This is the same engine behind our AI appointment setter.
- 07Kai hands off to a human when it should. Complex or sensitive threads route to your team with the full transcript attached.
- 08Everything syncs to your CRM. Transcript, disposition, and opt-out status, plus webhooks on the events you choose.
Because the trigger is a webhook, this works with whatever you already run. You are not replacing your phone system, and you are not buying a second one. You are giving it somewhere to send the calls it drops.
An AI agent is not an autoresponder
Most products sold as missed call text back software are autoresponders with a template field. The practical difference:
If you have ever wired missed call text back together in GoHighLevel, Twilio, or a similar builder, you know exactly where the ceiling is. The automation fires, the caller replies with something the workflow never anticipated, and the thread just sits there. The trigger was never the hard part. The conversation after the trigger is the hard part. That is also the difference between a drip and AI lead follow up.
Built for businesses that live on the phone
- —Home services. HVAC, plumbing, electrical, roofing, remodeling. Your techs are on a job and the caller has three other numbers to try.
- —Contractors and trades. Estimates go to whoever responds first.
- —Legal and professional services. Intake calls arrive at odd hours and a missed one is expensive.
- —Clinics and practices. The front desk is with a patient; lines stack up at open and at lunch.
- —Anyone running paid ads to a phone number. You already paid for that click. A missed call is a click you bought and threw away.
Compliance is a feature, not a footnote
Automated business texting in the US sits under carrier rules and the Telephone Consumer Protection Act. Most vendors in this category say nothing about it. We would rather show you the machinery.
A2P 10DLC registration. Since 2023, carriers have required that application-to-person traffic sent to US numbers from a 10-digit long code be attached to a registered brand and campaign, and Twilio returns error 30034 for messages sent from an unregistered 10DLC number (Twilio, A2P 10DLC documentation and Error 30034 reference). Registration is not optional if you want your texts to have a route. FromKai handles brand and campaign registration as part of setup. See what 10DLC actually is.
Pre-send screening. Before anything sends, FromKai checks the number against the national Do Not Call registry and applicable state registries, against a known-litigator suppression list, and against your own suppression list, and validates that the number is real.
Opt-out handling. Kai captures opt-outs, applies them, and syncs opt-out status to your CRM so the record lives where your team can see it. On what to keep and why, see SMS consent records.
And the honest part. No software makes you compliant. Compliance depends on how you obtained the numbers, what consent you can evidence, what your messages say, and how you run the program day to day. FromKai gives you controls, screening, and records. It does not give you legal cover, and nothing on this page is legal advice. Talk to your own counsel about your program. If your texts are already not arriving, start with why business texts are not delivered.
What it costs
Every plan includes Kai, the missed call text back workflow, compliance screening, CRM sync, webhooks, and API access, plus one standard SMS line. Additional standard lines are $10 per month. SMS credits are purchased separately, so you pay for the volume you actually send.
Setup covers 10DLC brand and campaign registration, line provisioning, calendar and CRM connection, and configuring how Kai talks about your business. Self-serve checkout is not open yet. Join the launch list and we will contact you to get you configured. Full plan detail is on the pricing section.
Questions people actually ask
What is missed call text back?
Missed call text back is software that automatically sends a text message to a caller as soon as their call to your business goes unanswered. Instead of reaching voicemail, the caller gets an SMS they can reply to right away. With FromKai, replying starts a real conversation with Kai, an AI agent that can answer questions, qualify the caller, and book an appointment.
Does FromKai answer my phone calls?
No. FromKai is a texting platform and does not handle voice at all. Your existing phone system or CRM detects the missed call and triggers FromKai through a webhook, and Kai takes over by text from there. You keep the phone system you already have.
How is this different from a normal missed call auto text?
A normal missed call auto text sends one canned message and stops. If the caller replies with a question, nothing happens until a person reads it. Kai reads the reply, answers it, asks its own qualifying questions, checks your real calendar availability, and books the appointment. The autoresponder moves work onto your team. The AI agent does the work.
Does it work after hours and on weekends?
Yes. Kai runs around the clock, so calls missed at night, over a weekend, or on a holiday get an immediate text and can be carried through to a booking without anyone on your team being awake.
Do I need 10DLC registration to send missed call texts?
Yes, if you are texting US numbers from a standard 10-digit business line. Carriers require application-to-person traffic to be attached to a registered brand and campaign, and unregistered sends are rejected. FromKai handles brand and campaign registration for you as part of the one-time setup.
Do I need my own Twilio account?
No. Every FromKai plan includes one standard SMS line, and additional standard lines are $10 per month. SMS credits are purchased separately. You do not need to hold your own carrier account or wire up messaging infrastructure yourself.
Can Kai actually book the appointment, or just take a message?
Kai books. It checks live calendar availability, offers times that are genuinely open, and books the slot inside the text conversation. It also writes the transcript, the disposition, and the opt-out status back to your CRM, and fires a webhook if you want to trigger something downstream.
How much does missed call text back software cost?
FromKai plans are $299 per month for Kai, $499 per month for Kai Pro, and $999 per month for Kai Max, plus a $499 one-time setup fee. Each plan includes one standard SMS line; extra lines are $10 per month. SMS credits are billed separately based on how much you send.