API endpoints for developers
Use Sendwo API endpoints to connect your apps, websites, CRMs, automation tools, and backend systems with WhatsApp messaging, subscriber data, and workflow automation.
- Build seamless API integrations with your apps and internal systems.
- Access, sync, and manage subscriber lists programmatically.
- Edit and update subscriber profiles in real time.
- Enhance communication with automated WhatsApp workflows.
- Boost efficiency with fast, secure, developer-friendly API access.
{
"phone": "+9198XXXXXX21",
"name": "Priya Mehta",
"list_id": "lead_followups",
"custom_fields": {
"source": "website_form",
"interest": "WhatsApp automation"
}
}
profile.updated
workflow.triggered
Trusted by growing businesses that use WhatsApp to sell, support, and scale faster.
Use Sendwo as a programmable WhatsApp automation layer.
Connect your existing systems with Sendwo to manage contacts, update profiles, sync subscriber lists, and trigger communication workflows from your own apps.
Seamless Integration
Integrate Sendwo with your applications, backend systems, CRMs, landing pages, and internal tools.
- Instant access to subscriber data.
- Sync with your existing workflows.
- Smooth API connection for developers.
Subscriber Management
Control your subscriber lists programmatically and keep WhatsApp contacts organized.
- Add, update, or delete subscribers.
- Real-time list synchronization.
- Keep data accurate and up to date.
Profile Editing
Edit subscriber profiles, custom fields, tags, source data, and customer attributes with API calls.
- Quick profile updates in seconds.
- Modify details instantly.
- Manage profiles with simple API calls.
Enhanced Communication
Use accurate subscriber data to automate relevant WhatsApp messages, alerts, and follow-ups.
- Automate messages and workflows.
- Engage users with real-time updates.
- Boost customer engagement rates.
Fast & Secure Access
Build reliable integrations with quick API access and secure communication patterns.
- Robust security protocols in place.
- Fast data retrieval and processing.
- Reliable performance for automation.
Workflow Triggering
Connect external events with Sendwo automation to reduce manual work across your operations.
- Trigger follow-ups from app events.
- Route subscribers into campaigns.
- Connect data with WhatsApp actions.
From your app event to Sendwo subscriber action.
Use Sendwo API endpoints when your app needs to create subscribers, update profiles, sync lists, or prepare contacts for WhatsApp automation.
Connect your product data with WhatsApp engagement.
Developers can use Sendwo API endpoints to move subscriber data from websites, checkout flows, CRMs, lead forms, SaaS apps, internal dashboards, or backend systems into Sendwo for WhatsApp marketing and automation.
{
"event": "lead_created",
"action": "add_to_sendwo_list",
"next_step": "send_template_message"
}
Generate or access API credentials
Use your Sendwo account API access to connect external systems with subscriber and automation workflows.
Send subscriber data from your app
Pass name, phone number, list ID, tags, source, and custom fields from your website or backend system.
Update profiles and lists in Sendwo
Create, update, delete, or enrich subscriber records so WhatsApp campaigns use clean customer data.
Use data for communication workflows
Trigger WhatsApp templates, chatbot journeys, reminders, alerts, and segmented campaigns from updated records.
What developers can build with Sendwo API endpoints.
Create reliable connections between Sendwo and the tools your business already uses for sales, support, ecommerce, lead generation, and customer operations.
Create subscribers
Add new WhatsApp contacts from websites, apps, landing pages, forms, CRMs, or internal tools.
Update profiles
Modify customer name, source, city, plan, interest, tags, custom fields, and subscriber attributes.
Sync lists
Move contacts into the right lists and keep marketing, sales, and support segments clean.
Campaign readiness
Prepare subscriber records for future broadcasts, template messages, reminders, and offers.
Ecommerce events
Add customers after checkout, tag abandoned carts, update order interest, or trigger post-purchase flows.
Lead management
Push leads from forms, CRM stages, ad funnels, or sales systems into Sendwo automatically.
Chatbot enrichment
Keep subscriber records updated so chatbot flows can personalize replies and route users better.
Operational alerts
Use API-driven data updates to support internal WhatsApp alerts and customer follow-up processes.
Build with clean subscriber, profile, and workflow data.
Keep the page technical enough for developers while still making the business value clear for marketing and operations teams.
Create subscriber
Add a WhatsApp contact to Sendwo from your product, form, checkout, or CRM workflow.
POST /api/subscribers
{
"phone": "{{phone}}",
"name": "{{name}}",
"list_id": "{{list_id}}"
}
Update profile
Change fields such as plan, lead source, city, order status, tags, or custom attributes.
PATCH /api/subscribers/{{id}}
{
"city": "Delhi",
"interest": "demo"
}
Prepare automation
Use updated subscriber fields to power segmented campaigns, chatbot logic, and WhatsApp workflows.
{
"segment": "hot_lead",
"next_action": "send_template"
}
Start with WhatsApp. Extend automation across customer channels.
Sendwo is WhatsApp-first, but your automation and subscriber data can also support Instagram, Telegram, Facebook Messenger, and website chat workflows.
Automate templates, broadcasts, chatbot flows, reminders, and customer campaigns.
Support social conversations and AI-powered replies.
Telegram
Engage Telegram users with automated chatbot workflows.
Messenger
Manage customer conversations from Facebook Messenger.
Website Chat
Convert website visitors with chat widgets and automation.
Connect API endpoints with the rest of your Sendwo stack.
Use these internal links to avoid orphaning this developer page and guide visitors toward related Sendwo product, automation, and support pages.
Explore all integrations
View Sendwo integrations for forms, ecommerce, automation tools, payments, AI, and developer workflows.
⚙️External HTTP API
Connect chatbot flows directly to external APIs for real-time lookup, data exchange, and dynamic routing.
🤖WhatsApp chatbot
Create automated WhatsApp chatbot flows to qualify leads, answer questions, and support customers faster.
✨Sendwo AI
Enable AI-powered replies and chat automation across WhatsApp, Instagram, Telegram, Messenger, and website chat.
💬Dedicated support
Get hands-on help with onboarding, setup, training, troubleshooting, and WhatsApp campaign execution on paid plans.
💳Transparent pricing
Compare Sendwo plans, start free forever, and pay zero Sendwo markup on Meta WhatsApp API pricing.
Build developer-led WhatsApp automation without overpaying.
Sendwo offers a free forever plan, transparent pricing, zero markup on Meta WhatsApp API pricing, and dedicated support on all paid plans.
Sendwo API endpoint questions, answered.
A quick guide for technical users who want to connect external apps and backend systems with Sendwo.
What are Sendwo API endpoints used for?
Sendwo API endpoints help developers connect external applications with Sendwo to manage subscribers, update profiles, sync lists, and support WhatsApp automation workflows.
Can I add subscribers to Sendwo using API endpoints?
Yes. Developers can use API endpoints to create subscribers from websites, apps, forms, checkout flows, CRMs, and other backend systems.
Can I update subscriber profiles through API calls?
Yes. Subscriber profiles can be updated with details such as name, phone number, source, tags, list assignment, custom fields, city, lead status, or campaign information.
How is this different from the External HTTP API integration?
API Endpoints are used by external apps to work with Sendwo data and actions. The External HTTP API integration is used inside Sendwo chatbot flows to call third-party APIs during a conversation.
Is this page intended for developers?
Yes. This page is mainly for developers, technical marketers, automation teams, SaaS teams, and businesses that want to connect their existing systems with Sendwo.
Does Sendwo charge markup on Meta WhatsApp API pricing?
No. Sendwo does not add markup on Meta WhatsApp API pricing. Customers pay Meta’s WhatsApp API charges directly as applicable, while Sendwo provides the software layer for campaigns, automation, chatbots, and support.
Connect Sendwo with the tools your developers already use.
Start free, use API endpoints to sync subscribers, update profiles, manage lists, and power WhatsApp automation from your own applications.
