SMS
SMS OTP
The universal fallback. Reliable, global reach with carrier-grade delivery and local sender-ID support.
- 190+ country coverage
- DLT & 10DLC ready
- Sub-second delivery
Tools
Utilities for
modern
messaging.
Free calculators and reference tools to help you plan, price, and deploy SMS, WhatsApp Business API, and RCS messaging.
Channels
One platform,
three channels.
Choose the right channel for every verification. Mix SMS, WhatsApp Business API, and RCS to balance reach, cost, and user experience.
WhatsApp
WhatsApp Business API
Rich, conversational verification. Branded templates, two-way replies, and higher trust than plain text.
- Verified business profile
- Interactive buttons
- Global template library
RCS
RCS Business Messaging
The next-generation inbox experience. Branded rich cards, carousels, and suggested actions built for conversion.
- Branded sender
- Rich media cards
- Read receipts & analytics
01
RCS Onboarding Form
RCS
Complete the RCS Business Messaging onboarding form and export your submission as Word, Excel, or PDF.
Open form →01
02
OTP Cost Estimator
Pricing
Estimate monthly spend across SMS, WhatsApp, and RCS based on message volume, country mix, and fallback rules.
Estimate cost →02
03
Coverage Checker
Networks
Check operator coverage, sender ID support, and DLT requirements for the countries where your users live.
Check coverage →03
04
Fallback Planner
Routing
Model delivery paths: start on RCS or WhatsApp, then fall back to SMS automatically when a channel is unavailable.
Plan fallback →04
05
Template Validator
WhatsApp
Preview how your WhatsApp Business API message templates will render and check them against Meta formatting rules.
Validate template →05
FAQ
Questions,
answered.
- Are the OTP SMS tools free to use?
- Yes. Our calculators and reference tools are free for visitors. Enterprise API access, volume routing, and dashboard features require an account.
- Can I test SMS delivery before signing up?
- You can use the route estimator and coverage checker to confirm network reach. For live delivery tests, create a free account or contact our sales team.
- Do the calculators support all three messaging channels?
- Yes. Cost estimators and fallback planners cover SMS, WhatsApp Business API, and RCS Business Messaging so you can compare channels side by side.
Need a custom tool?
Tell us what your team is building. We can expose private calculators, route simulators, or sandbox APIs tailored to your workflow.
