Programmable SMS & Two-Way Messaging for Modern Business
Connect with customers globally via reliable SMS & MMS. Send notifications via high-speed REST API or chat 2-way directly from the Firetell Call Center Portal with zero carrier fees for internal routing.
Experience the best SMS inbox conversation, built for teams
Empower your agents and entire team to collaborate effortlessly, respond faster, and centralize customer texting across all channels.
Shared teams SMS inbox
Multiple team members can view, assign, and reply to messages from the same business phone numbers. With real-time collision detection, unread status indicators, and internal agent notes, your team resolves inquiries with zero friction.
2-way texting from any software
With Firetell's two‑way text API, you can plug texting straight into your CRM, helpdesk, or booking system. Trigger automated outbound messages on key events and let agents continue the conversation seamlessly via two-way webhooks.
Simple online SMS platform
With a user‑friendly dashboard in the Call Center Portal, agents and teams can collaborate in real time. Track character counts, SMS parts, real-time carrier delivery status, and estimated costs before hitting send.
Complete Messaging Infrastructure for Voice & Text
Everything you need to automate outbound texts, power 2-way customer conversations, and cut messaging costs.
Two-Way Conversational SMS
Enable agents to chat with customers directly inside the Call Center Portal. Assign threads, manage unread messages, and keep full conversation histories.
Programmable REST API
Send SMS and MMS with simple, developer-friendly REST endpoints. Integrate OTPs, appointment reminders, and automated triggers in minutes.
AI Voice Agent SMS Integration
Trigger automated SMS messages during voice calls or immediately post-call to send confirmations, receipts, links, and summaries.
Rich Media MMS Support
Send images, tickets, digital receipts, and documents alongside text messages to deliver richer, more engaging customer experiences.
Real-Time DLR & Webhooks
Track message lifecycle in real-time from queued to delivered. Receive instant webhooks and SSE updates for all inbound and outbound events.
Dedicated Rate Limits & Spam Shield
Isolated 30 req/min SMS rate limiting protects your quota and ensures high carrier delivery rates, with custom Enterprise tiers available.
Automate SMS Messaging Directly from AI Voice Agents
Unify voice and text on the same business number. Let your 24/7 AI Voice Agent trigger real-time SMS messages during live calls or immediately after hangup — delivering confirmation links, receipts, directions, and OTPs with zero human intervention.
- In-Call Real-Time SMS Trigger — Send URLs, payment links, and booking details to callers while they are talking to the AI agent
- Post-Call Summary & Follow-Up — Automatically generate and dispatch call summaries and next steps right after the call ends
- Seamless 2-Way Handover — Callers can text back to the same number, seamlessly routed to live agents in the Call Center Portal
- Unified Business Identity — A single phone number handles Voice AI, human agent calls, and two-way SMS messaging
"Your appointment with Dr. Smith is confirmed for tomorrow at 2:00 PM. I have just texted you the booking code and directions!"
Send Your First SMS in Seconds
Designed with clean REST endpoints, standard E.164 formats, and comprehensive webhook events.
curl -X POST "https://{workspace}.firetell.app/api/v1/messages/send" \
-H "Authorization: ApiKey sk-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "+13074295456",
"to": "+18647123123",
"body": "Your appointment is confirmed for tomorrow at 2:00 PM."
}'{
"id": "msg_682d82eb0ba1ffeace0190",
"direction": "outbound",
"status": "queued",
"from": "+13074295456",
"to": "+18647123123",
"created_at": "2026-09-29T10:05:00.000Z"
}Built for Every Customer Touchpoint
Omnichannel Customer Support
Switch seamlessly between phone calls and text messages on the same business number. Send follow-up details right after a call ends.
Appointment Reminders
Automate two-way appointment confirmations with high open rates. Allow customers to confirm or reschedule by simply texting back.
Authentication & Security Alerts
Deliver time-sensitive one-time passwords (OTP) and transaction verification codes with low latency and dedicated carrier routing.
Order & Delivery Notifications
Keep customers informed with real-time delivery status, tracking links, and interactive shipping updates.
Pay Only for What You Send
No upfront commitments, no minimum volume requirements. Scale your messaging with crystal-clear, developer-friendly rates at 30% below traditional providers.
National SMS (US & Domestic)
Ultra-reliable outbound SMS to any mobile carrier nationwide with high delivery rates.
- Direct Tier-1 carrier routing
- Instant Delivery Receipts (DLR)
- 10DLC & Toll-Free registered paths
- Two-way text API & Portal inbox
International SMS
Global delivery reach to over 190 countries and territories with automated long-message concatenation.
- Global carrier interconnects
- Alphanumeric Sender ID support
- GSM-7 & Unicode character support
- Automatic long SMS concatenation