SMS that costs what you send
$0.025 per message segment. No monthly minimum, no contract — buy a credit pack, send when you're ready, and let auto-reload top you up. Build broadcasts and sequences free; you only pay to send.
Cost calculator
Carrier-accurate: a message over 160 characters (or with emoji) counts as multiple segments — exactly how you're billed.
This message
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Credits / month
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Est. monthly cost
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Credit packs
1 credit = 1 SMS segment (160 characters). MMS uses 3. The rate never changes — bigger packs just include bonus credits.
$10 — 400 messages
$10.00 one-time · 400 credits
$25 — 1,000 messages
$25.00 one-time · 1,000 credits
$50 — 2,080 messages (+4%)
$50.00 one-time · 2,080 credits
$100 — 4,280 messages (+7%)
$100.00 one-time · 4,280 credits
$250 — 11,000 messages (+10%)
$250.00 one-time · 11,000 credits
How it compares
| Tool | Monthly base | Per message | Email + booking + video |
|---|---|---|---|
| OCCS | $0 — prepaid | $0.025 | Included |
| Postscript | $100/mo (Growth) | $0.012 | SMS-only |
| GoHighLevel | $97–497/mo | wallet markup on Twilio | Separate |
At low-to-mid volume OCCS undercuts by skipping the monthly base. At very high volume Postscript's lower per-message rate edges ahead — but you give up the bundled email, booking, and AI-video.
Questions
What counts as a segment?
Up to 160 GSM characters is one segment. Longer messages split into 153-character segments; emoji and special characters switch to a 70-character Unicode limit. The calculator above mirrors this exactly.
What do I need before I can send?
A phone number ($5/mo) and a one-time 10DLC / A2P brand registration ($50 — a US carrier requirement, 1–3 business days). Our registration is AI-assisted to maximize approval odds. You can build and save broadcasts and sequences before that's done — we'll nudge you through setup.
Is there a contract or monthly minimum?
No. SMS is prepaid — buy a credit pack, and optionally turn on auto-reload so a low balance tops itself up. Stop any time; unused credits stay on your balance.