#Quickstart

Send your first text message in three steps. Everything here works against the free Developer sandbox.

#1. Get an API key

Create a key from your dashboard (or ask for sandbox access during your demo). Treat it like a password — it carries full account access. See Authentication for details.

export NETEXEM_API_KEY="sk_test_…"

#2. Send a message

One POST to /v1/messages sends an SMS from one of your numbers. The same message also appears in the softphone inbox in real time.

curl https://api.netexem.com/v1/messages \
-H "Authorization: Bearer $NETEXEM_API_KEY" \
-H "Content-Type: application/json" \
-d '{
  "from": "+15551234567",
  "to": "+15557654321",
  "body": "Hello from the API"
}'

Phone numbers use E.164 format — a leading + and country code, e.g. +15551234567.

#3. Receive the reply

When the recipient texts back, we send a signed message.received webhook to your endpoint and the conversation appears in the softphone. Set up your endpoint in Webhooks.

#Next steps

Authentication — keys, scopes and rotation
Send an SMS — the full message object, MMS and delivery receipts
API reference — try every endpoint live