Path: Building on the API

Step 1Getting startedBeginnerPanel or API: choosing how to sendSame balance, same rates, same reports. When the campaign composer is the right tool, when the API is, and how teams use both without stepping on each other.2 min readUpdated 30 Aug 2026 Step 2DevelopersAdvancedSending OTP and verification codes that arriveMessage format, validity, retries, fallbacks and rate limiting for one-time codes, with the API settings that matter.2 min readUpdated 26 Aug 2026 Step 3DevelopersAdvancedRunning delivery webhooks in productionVerify, acknowledge fast, process later, deduplicate, order by time, and monitor. The checklist for a handler that survives real traffic.2 min readUpdated 9 Jul 2026 Step 4CampaignsIntermediateScheduling a campaign across time zonesFixed moment, local window or drip: which to use, how zones are resolved from numbers, and what happens at the edges of a window.2 min readUpdated 5 Aug 2026