Switch five vendors for one API.

Move SMS, MMS, RCS, Email, and Telegram behind one request model with unified delivery receipts and configurable channel failover.

Starter or Scale

Starter is self-serve with a 14-day free trial, then $49/month credited toward usage: SMS $0.0079/segment and Email $0.001/email, 1 sending domain and 1 API key. Scale is a $1,000/month minimum on an annual contract, beginning on day 31 after 30 days with no minimum, and unlocks every channel at published rates.

Claim Your Spot

A limited 10-slot offer for AI teams using Claude, OpenAI, Gemini, Grok, Llama, Mistral, DeepSeek, Replit, or other AI platforms and messaging 1,000+ recipients/month: a $100/month lifetime minimum and $600 in onboarding and 10DLC approval support. Eligibility and availability are confirmed after submission.

Brand identity

Blocx is the programmable messaging product from OtterBlocx, LLC, headquartered in Cheyenne, Wyoming, United States.

Channels

  • Live today: SMS, MMS, RCS, Email, Telegram.
  • Blocx also offers separate Voice services: VoIP, voicemail, call routing, 2FA via AI caller, and a voice dialer. These are not channels on the messaging or Verify API.

Plans

  • Starter — self-serve, 14-day free trial, then $49/month credited toward usage. SMS $0.0079/segment, email $0.001/email (1 sending domain), 1 API key. No MMS, RCS, Telegram, SHAFT or restricted verticals. Trial includes dashboard and sandbox access; sends only to your own verified number, with a trial prefix and no 10DLC registration. Add a card to start the paid plan and message customers; on day 14 without a card, the account locks.
  • Scale — $1,000/month minimum platform spend (starts on day 31; no minimum for the first 30 days), on an annual contract. Every channel and route type at the published rate card — all rates listed on this site are Scale rates. Signup starts with a call. Required tier for SHAFT and other restricted verticals.
  • Volume — custom volume-based pricing negotiated on your traffic profile. Contact sales.

Published rate card (+ carrier passthrough on SMS/MMS)

  • SMS: 10DLC $0.0045, toll-free $0.0055, short code $0.007.
  • MMS: 10DLC $0.0135, toll-free $0.016, short code $0.018.
  • RCS: $0.0135/msg + one-time $1,000 setup fee.
  • Email: $0.0002 per email, flat.
  • Verify: $0.035 per successful verify, flat.
  • Telegram: $0.0045/msg, flat.