Twilio Missed-Call Text-Back

#15SMS Lead Response & Telephony

Twilio for missed-call text-back (lead-response package)

On the bench

1. What we use it for: We built our missed-call text-back and SMS lead-response spine on Twilio, Cloudflare Workers, D1, and Turnstile, currently awaiting live A2P 10DLC campaign approval.

2. Client use case · NexAI lead-response package (and historical 2024 voice receptionist at a massage spa in Greenville)State: built-not-live

Problem

Home-service and local businesses lose callers who hang up when a line is busy, but outbound business texting on US 10-digit numbers requires strict carrier A2P 10DLC registration and STOP/HELP compliance.

What the tool did

Built `apps/core/src/spine/messaging/twilio.ts` in `nexai-lead-response` on Cloudflare Workers + D1 + Turnstile (while already running a live Twilio SMS bridge for our internal AI webmaster lane, and having previously run a Twilio Voice receptionist in 2024 for a massage spa in Greenville before retiring that agent).

Result

Lead-response package is `built-not-live` awaiting live Twilio/A2P verification tasks (T-11 to T-13).

3. What it costs us or the client

~$1.15/month per local phone number, $0.0079 per SMS segment, and ~$4–$15/month in US carrier A2P 10DLC brand/campaign registration fees (as of 2026-10-22).

4. Setup notes (how it is wired in)

Twilio voice-status and SMS webhooks hit a Cloudflare Worker backed by D1 state and Turnstile form protection, with deterministic STOP/UNSUBSCRIBE handling before any AI reply is drafted.

5. What broke & how it was handled

US carrier A2P 10DLC vetting rejects campaigns if opt-in language, privacy policy links, or STOP/HELP auto-replies have any mismatch (which prompted us to build our `twilio-a2p-audit` skill); the lead-response package stays On the bench until live A2P registration finishes.

6. What we compared it against & why we picked it

Compared against GoHighLevel and CallRail texting; we built on Twilio + Cloudflare Workers for direct control over compliance rules and zero per-seat CRM markups.

7. Last reviewed: 2026-10-228. Video / tutorial: Interactive demo live at /demo; full stack promotion waits on live A2P cutover

All stack tools

Three separate steps. Stop after any of them.

Step 1 is a free 15-minute fit call. Step 2 is the AI Staff Assessment, $500, a written assessment you keep. Step 3 is your first hire at a published price, or you take the assessment and stop.

Step 1

Fit call

$0 · 15 min

tell me which job eats your week: the phone, the inbox, marketing or support
I tell you whether an AI hire fits, and whether I am the right person for it
you leave with the first hire I would start with
a slide deck

video call · same week

book it

Step 2

AI Staff Assessment

$500

a 60-minute video call about how your business runs
my written assessment the same day: whether an AI hire would pay for itself, the job I would hand off first, what to settle first, and the fixed price for that first hire
not taken off the build, and no separate quoting call: the assessment names the package at its published price
proposals written before anyone learned your business

paid when you book · not taken off the build

start here

Step 3

Your first hire

fixed price

Front Desk Hire or Brain + First Hire, at the published price
built in 2 to 6 weeks, then 30 days of tuning
or take the assessment and stop there
bench developers you never met

priced in the assessment

see the prices

SMS Lead Response & TelephonyTwilio Missed-Call Text-Back

Twilio for missed-call text-back (lead-response package)

Three separate steps. Stop after any of them.

Fit call

AI Staff Assessment

Your first hire

Want Twilio Missed-Call Text-Back wired into your business?