API Changelog
All notable changes to the SendAPI platform are documented here.
March 2026
v1.3.0 — 2026-03-09
New Features
- 🆕 Email Custom Domains: Verify your own sending domain for improved inbox placement. See Custom Domains.
- 🆕 Smart OTP Channel Routing:
channel: "auto"now uses real-time WhatsApp penetration data per country. See Smart Routing. - 🆕 Bulk WhatsApp:
POST /v1/whatsapp/send-bulknow supports up to 10,000 recipients per batch (up from 1,000). - 🆕 Phone Validation API: New
GET /v1/phone/validateendpoint for E.164 normalization, country detection, and line type classification.
Improvements
- ⚡ WhatsApp session reconnection time reduced from 30s to under 10s average.
- ⚡ Webhook delivery latency improved by 40%.
- 📖 VitePress documentation portal launched at
/docs.
Bug Fixes
- 🐛 Fixed: Sessions occasionally not firing
session.connectedwebhook after QR scan. - 🐛 Fixed: Email bounce handler not suppressing soft bounce addresses on 3rd failure.
v1.2.0 — 2026-03-01
New Features
- 🆕 Email Tracking: Open and click tracking now enabled by default on all outbound emails.
- 🆕 Webhook Log Viewer: View full delivery history and retry failed webhooks from the dashboard.
- 🆕 Annual Billing: Toggle to annual plan for 17% discount (2 months free).
Improvements
- ⚡ SMS pricing updated — Rwanda, Kenya, and Nigeria routes now 15% cheaper.
February 2026
v1.1.0 — 2026-02-15
New Features
- 🆕 Email API: Send transactional emails with templates and variable substitution.
- 🆕 OTP / Verify API: Send and verify codes via SMS, WhatsApp, or email.
- 🆕 API Key Scopes: Fine-grained permissions per key (
whatsapp:read,sms:write, etc.).
v1.0.0 — 2026-02-01
🎉 Initial release
- WhatsApp Messaging API (sessions, send, bulk, groups, contacts, webhooks)
- SMS API (send, bulk, status, pricing)
- Idempotency support on all POST endpoints
- Rate limiting with
X-RateLimit-*headers - REST API with cURL examples (SDKs coming soon)