SMS Segment Calculator
Calculate GSM-7/UCS-2 segments and character usage.
DIDWire
SMS Segment Calculator
Interactive planning tool
SMS utility
SMS segment calculator
Estimate follows standard GSM-7/UCS-2 segment limits. Carrier-specific headers, transformations or unsupported characters can change billing.
DIDWire
Related guide/product
Messaging Best Practices
Campaign registry & delivery
Guides on 10DLC brand registration, TCR campaign vetting, shortcode provisioning, and GSMA RCS Universal Profile setup.
SMS & MMS API Reference
High-throughput messaging endpoints
REST API, SMPP binds, automated GSM-7/UCS-2 segmentation, alphanumeric sender IDs, and real-time delivery receipt callbacks.
SMS Segment & Rate Tools
GSM-7 & UCS-2 segmenter
Interactive character encoding calculator to detect Unicode hidden costs, count SMS segments, and verify E.164 formats.
10DLC & CTIA Compliance
AUP & spam mitigation policies
CTIA messaging principles, carrier throughput limits, SHAFT content filtering guidelines, and verified sender marks.
Messaging Route Telemetry
Direct operator bind latency
Real-time DLR latency metrics, carrier throughput health, and historical message dispatch reliability reports.
Messaging Rate Cards
Country-by-country SMS rates
Download detailed per-message rate matrices for transactional SMS, OTP authentication, and international RCS routes.
Pricing Transparency
Rate/coverage/quote CTA
Check Approved Rates
Built for high-volume enterprise traffic and mission-critical uptime.
Carrier-direct voice termination, global DID inventory, verified SMS/RCS routes, and programmable APIs engineered for enterprise resilience.
Transparent Commercial Rates
Browse transparent A-Z rate decks, local DID pricing, and SMS volume tiers with zero hidden commitments.
- Live country-by-country rate search
- Downloadable CSV rate decks
- Flexible prepaid or billed terms
Enterprise & High-Volume Interconnect
Custom CPS limits, bilateral carrier agreements, dedicated account management, and SLA contract guarantees.
- Custom committed CPS thresholds
- 24/7 dedicated NOC escalation desk
- STIR/SHAKEN Level-A token signing
Programmable CPaaS APIs
Integrate voice calling, SMS/RCS messaging, and DID provisioning into your software stack in minutes.
- RESTful endpoints & real-time webhooks
- Official Node, Python, Go, and PHP SDKs
- Instant sandbox test environment