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- Prelude Transactional SMS API
On the recordRead 4 Oct 202613 facts
Prelude Transactional SMS API
Plans and prices
Pay as you go
€0.05usage-based
Country- and volume-based pricing · No hidden fees or subscriptions
Read 4 Oct 2026 · prelude.so
On the record
- API
- The API uses REST and supports single or bulk message sending through POST requests.prelude.so · read 4 Oct 2026
- Certifications
- Prelude’s Trust Center lists ISO 27001:2022 and SOC 2 Type 1 and Type 2 reports.trust.prelude.so · read 4 Oct 2026
- Integration resources
- Prelude offers technical documentation, code samples, sandbox testing, dashboard test numbers, and free credits for real message testing.prelude.so · read 4 Oct 2026
- Message handling
- The API automatically manages language and encoding and supports dynamic fields such as name, language, and time zone.prelude.so · read 4 Oct 2026
- Monitoring
- The service provides delivery receipts, real-time message status, analytics, cost monitoring, and detailed API logs.prelude.so · read 4 Oct 2026
- Performance
- Prelude advertises average delivery under three seconds, a delivery rate above 98%, and a 99.95% uptime SLA.prelude.so · read 4 Oct 2026
- Pricing model
- Pricing depends on destination country and sending volume, with no setup fees or minimum commitment stated on the product page.prelude.so · read 4 Oct 2026
- Privacy and compliance
- Prelude says its infrastructure complies with GDPR and U.S. privacy standards and that only essential data is stored for delivery tracking.prelude.so · read 4 Oct 2026
- Routing
- Prelude says it routes messages by region and carrier and supports delivery to over 230 countries.prelude.so · read 4 Oct 2026
- Security
- Prelude states that communications use HTTPS/TLS encryption and token-based API authentication, with hosting in U.S. and EU data centers.prelude.so · read 4 Oct 2026
- Support
- Prelude offers human support via chat, email, and a dedicated Slack channel for integration, deliverability, webhook, and troubleshooting help.prelude.so · read 4 Oct 2026
- What it does
- Prelude’s Transactional SMS API sends automated service messages such as OTPs, order confirmations, payment notifications, and reminders.prelude.so · read 4 Oct 2026
