Email Send API

What is Email Send?

The Email Send from JustSwitch lets product teams integrate email addresses in real time through a single REST integration. Designed for the SMS / WhatsApp lane, it removes manual checks, reduces drop-offs in onboarding funnels, and returns structured JSON that your risk engine, CRM, or core banking system can consume instantly.

Every request is authenticated with API keys, logged for audit, and routed through regulated partner rails where required. Responses follow a consistent `{ ok, data, message }` envelope so you can ship once and reuse the same error-handling patterns across all JustSwitch endpoints.

Whether you run a lending app, payment aggregator, or enterprise ERP, Email Send scales horizontally with rate limits tuned for burst traffic during campaigns.

Developers choose JustSwitch for Email Send because we aggregate multiple upstream providers behind one contract, one wallet settlement, and one support desk — so you launch faster while your compliance team retains full audit visibility through dashboard logs and exportable reports.

Technical specification

Endpoint details for Email Send integration on JustSwitch.

Key features

Who uses Email Send?

How it works

1. 01

   Obtain sandbox keys from the JustSwitch developer console.

2. 02

   POST input identifiers; handle validation errors in-line.

3. 03

   Map response fields into your workflow & go live with production keys.

Sample integration

Illustrative JSON for Email Send — see developer docs for live schemas.

{
    "input": "XXXXXXXX",
    "reference_id": "REQ-2026-001",
    "consent": true
}

{
    "ok": true,
    "message": "Success",
    "data": {
        "status": "success",
        "reference_id": "JS-1CHMRGQB",
        "verified_at": "2026-06-23T22:46:42+00:00"
    }
}

Business benefits

• Reduce manual ops cost by up to 70% on verification-heavy journeys
• Improve conversion with inline validation instead of offline turnaround
• Single contract & settlement across 200+ Indian fintech APIs
• Audit-ready logs exported from the admin console
• Dedicated solutions engineering for enterprise rollouts

Frequently asked questions