Tech riderRev. 4 Oct 2026
Prelude Transactional SMS API
- 1Runs onAPI, Web
- 2Costsfree trial
- 3Pay-as-you-goYes
- 4SMS APIYes
- 5Delivery statusYes
- 6WebhooksYes
- 7Two-way messagingYes
7 lines stated Written from the maker's own pages: prelude.so
Overview
Prelude Transactional SMS API is ranked #26 of 76 in transactional SMS software on Specifiction. It runs on API, Web. There is no free plan. A free trial is offered.
Prelude Transactional SMS API plans and pricing
All plansPay as you go €0.05 once Per verification; SMS message costs are additional and vary by country. Country- and volume-based pricing · No hidden fees or subscriptions prelude.so · 4 Oct 2026
Compared on transactional SMS software
- Pay-as-you-go
- Yesprelude.so
- SMS API
- Yesprelude.so
- Delivery status
- Yesprelude.so
- Webhooks
- Yesprelude.so
- Two-way messaging
- Yesprelude.so
Facts
- What it does
- Prelude’s Transactional SMS API sends automated service messages such as OTPs, order confirmations, payment notifications, and reminders.prelude.so · 4 Oct 2026
- API
- The API uses REST and supports single or bulk message sending through POST requests.prelude.so · 4 Oct 2026
- Routing
- Prelude says it routes messages by region and carrier and supports delivery to over 230 countries.prelude.so · 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 · 4 Oct 2026
- Monitoring
- The service provides delivery receipts, real-time message status, analytics, cost monitoring, and detailed API logs.prelude.so · 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 · 4 Oct 2026
- Performance
- Prelude advertises average delivery under three seconds, a delivery rate above 98%, and a 99.95% uptime SLA.prelude.so · 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 · 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 · 4 Oct 2026
- Certifications
- Prelude’s Trust Center lists ISO 27001:2022 and SOC 2 Type 1 and Type 2 reports.trust.prelude.so · 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 · 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 · 4 Oct 2026
Company
- Founded
- 2022prelude.so · 28 Sept 2026
Best Prelude Transactional SMS API alternatives
See all 20 All accessCh 01 ClickSend SMS API Free trialAPIiOS 7.3 All accessCh 02 Textmagic Free trialAndroidAPI from $0.05/mo7.3 All accessCh 03 Bandwidth Messaging API Free trialAPIWeb 7.2 All accessCh 04 Clickatell SMS API Free planFree trialAPI Free to start7.0 All accessCh 05 Mailchimp Free planWebiOS Free to start7.0 All accessCh 06 Infobip SMS API Free planFree trialAPI Free to start6.9
Where it ranks on Specifiction
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Sources
- prelude.so/transactional-api· checked 4 Oct 2026
- trust.prelude.so· checked 4 Oct 2026