SENDFLOWFIRE THE API. FORGET THE CHANNELS.
Never think about
transactional messaging again.
One API call with a flow ID. Sendflow owns the templates, the routing, the retries, the fallback and the compliance — across SMS, RCS, WhatsApp and email. Median OTP latency under eight seconds, at bank scale.
Trusted by 1,000+ Brands Messaging Millions Daily
Months of Engineering, Solved in Minutes
Stop building lengthy messaging flows from scratch. Start delivering notifications in the time it takes to read this page.
Building Infrastructure
Week 1· still not liveShipping With Sendflow
Connect & Configure
Configure your templates, flows and webhooks in one dashboard. Grab the flow ID and call the Sendflow API.
POST /v1/sendflow/otp-login/trigger
Deliver & Track
Deliver transactional messages across SMS, RCS, WhatsApp and email. Monitor real-time status and logs with instant diagnostic telemetry.
Delivered via WhatsApp · 1.2s
Debug in minutes, not tickets.
Per-message logs from trigger to delivery: attempted, failed, recovered, delivered, read with timestamps and operator responses. Test any flow against real handsets with Try Flow before you publish.
POST https://api-ai.zixflow.com/api/ingest/sendflow/v1/{sendflow_id}/trigger
Waiting for the next event…
Infrastructure you should expect.
Sendflow gives your team the complete notification infrastructure, so you ship features.
Visual Flow Builder
Drag triggers, channels, delays and conditions into a multi-channel flow. No written code, no redeployment hassle.
Template Management
Every template in one place with versions and variables across SMS, WhatsApp, RCS and email.
Your OTP is {{otp}}. It expires in 5 minutes.
SMS · WhatsApp · RCS · Email
Environments
Build and test in draft mode with live previews and test sends, then ship the same flow to Production.
Test handsets only · not billed
Auto-Retry & Fallback Logic
When a channel fails or times out, Sendflow retries and falls back to the next one automatically.
98%
OTP delivery
<8s
median OTP latency
Real-time Analytics
Watch delivery, latency, and volume per channel or per flow live as it happens down to each message.
Delivered · live
9,472/ min
Optimize Cost
Delivered on the first try? The flow ends there. Failover kicks in only when it's needed, so no wasted sends.
Time Delay
Pause a flow for a fixed time or until an event arrives, payment made, or an OTP is verified.
Starts after the welcome message
Country-based Routing
Every number routes to its own country's path, with local senders and compliant templates.
Parallel Branch Execution
Fan out to several channels at once when a message is too important to wait for a fallback.
Waiting for trigger
Branching
Split flows by language, region or any condition, and every user gets the version meant for them.