A phone system your software can drive.
A real softphone for iPhone, iPad, Mac, desktop and web — with a production REST API, webhooks, deep links and an MCP server behind it. Send programmable SMS, click-to-call, and turn website chat into two-way SMS — then wire it all into your own apps, CRM and dashboards.
Not a raw CPaaS you assemble for months. Not a closed app you can’t program. The developer-friendly middle ground.
curl https://api.netexem.com/v1/messages \
-H "Authorization: Bearer $NETEXEM_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "+15551234567",
"to": "+15557654321",
"body": "Your appointment is confirmed for 2pm — reply STOP to opt out."
}'One POST sends a text — and it lands in the softphone too.
Voice, SMS and a real app — all programmable.
Programmable SMS & MMS
Send and receive two-way SMS/MMS from dedicated business numbers over a REST API — every message also lands in the softphone, with delivery receipts and TCPA opt-out handled.
Learn moreWebsite chat → two-way SMS
Drop a “chat with us” snippet on any site. A visitor’s chat becomes a real two-way SMS conversation you answer from the softphone on web, desktop or mobile.
Learn moreClick-to-call & deep links
Launch a call or a pre-addressed text from any button, CRM record or dashboard with a deep link — the softphone opens with the recipient ready to go.
Learn moreContacts API
Create and sync contacts on the fly. A customer fills out your form and they’re in the shared softphone contact list — with caller-ID resolution on the next call.
Learn moreWebhooks
Subscribe to inbound messages, delivery receipts and call events. Every webhook is HMAC-SHA256 signed so your endpoint can trust it.
Learn moreMCP server
A Model Context Protocol server so agents and Claude Code can read and act on your phone system — send a text, look up a contact, check a message's status in the loop.
Learn moreThe middle ground between a CPaaS and a closed app.
More finished than a CPaaS
Twilio hands you primitives and a months-long build. VanceTel ships the softphone, the shared inbox and the dashboards — and still gives you the API.
More open than an app
OpenPhone and Aircall are closed apps. VanceTel exposes the REST API, webhooks, deep links and an MCP server, so the phone system becomes part of your software.
One place for sales + phone
Automated SMS, click-to-call and website chat all surface in the same softphone your team already uses — not a fourth tool nobody opens.
Whether you’re shipping, integrating, or selling.
Ship phone + SMS in an afternoon
A REST API, webhooks and an MCP server with a finished app on top. Stand up calling and texting without becoming a telecom team.
See howIT & platform teamsProgrammable SMS that fits your stack
Two-way SMS, HMAC-signed webhooks, deep links and a contacts API. Drive it from your own software instead of bolting on another silo.
See howSales teams & SMBCalls and texts, inside your workflow
Click-to-call and click-to-text straight from your CRM, automated SMS that lands in a real softphone, and website chat that becomes a live text thread.
See howIs VanceTel a Twilio alternative?
VanceTel sits between a raw CPaaS like Twilio and a closed softphone app. You get the same programmability — a REST API, webhooks, deep links and an MCP server — but you also get a finished softphone, shared SMS inbox and dashboards out of the box, so there is far less to build before you ship.
What can I do with the API?
Send and receive SMS/MMS, place click-to-call and pre-addressed text deep links, create and sync contacts, and subscribe to webhooks for inbound messages, delivery receipts and call events. The public API is write-and-event oriented; the softphone app surfaces everything in real time.
How does website chat become SMS?
You embed a small “chat with us” snippet on your site. When a visitor starts a chat, it opens a two-way SMS conversation that you answer from the VanceTel softphone on web, desktop or mobile — the visitor texts from your site, you reply from your phone.
Do you have an MCP server?
Yes. VanceTel ships a Model Context Protocol server so AI agents and Claude Code can act on your phone system in the loop — send a text, resolve a contact, or check a message's status — alongside the REST API and webhooks.
Which devices does the softphone run on?
The VanceTel softphone runs on iPhone, iPad, Mac, Apple Vision Pro, Windows/Mac desktop and the web — calls and texts ring every device at once, and you can also pair desk phones.
Put your phone system in your codebase.
See the softphone, the API and the website-chat-to-SMS flow in a 20-minute walkthrough.