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.

Pay-as-you-go or Scale

Pay-as-you-go is self-serve with no minimum: SMS $0.0079/segment and Email $0.001/email. Scale is a $1,000/month minimum on an annual contract, beginning on day 61 after 60 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 Otter Technologies Inc., headquartered in Cheyenne, Wyoming, United States.

Channels

  • Live today: SMS, MMS, RCS, Email, Telegram.
  • Voice is not a Blocx channel.

Plans

  • Pay-as-you-go — self-serve, no minimum spend. SMS $0.0079/segment, email $0.001/email (1 sending domain), 1 API key. Not available for SHAFT and other restricted verticals.
  • Scale — $1,000/month minimum platform spend (starts on day 61; no minimum for the first 60 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.