# phone & sms integrations for AI agents

> 27 phone & sms apps the Definable agent workforce can read from, write to, and act on inside a multi-agent workflow.

## Count

**27** phone & sms integrations on Definable. Every one is callable from any workflow on every plan — no per-app limits.

## How the agent team uses phone & sms integrations

When the Builder agent reads a prompt that involves phone & sms work, it assembles specialists from the team — Researcher, Writer, Designer, Engineer, Distributor — and routes phone & sms tool calls through the **Distributor specialist**. The Researcher pulls context, the Writer or Designer produces the output, the Distributor pushes the result into the user's phone & sms tool of choice. The Verifier checks every call and self-heals on rate limits, schema drift, or auth refresh.

The Builder picks the right phone & sms integration per workflow based on what the user has connected — no manual mapping required.

## Apps in this category

- **Brevo** — Brevo (formerly Sendinblue) is an all-in-one email and SMS marketing platform that provides transactional messaging, marketing automation, contact management, and CRM tools to help businesses communicate and engage with their customers. — https://definable.ai/apps/brevo/
- **Callerapi** — CallerAPI provides a white-label caller identification API that enhances customer trust, stops spam, fraud, and robocalls by offering branded caller ID solutions. — https://definable.ai/apps/callerapi/
- **Callingly** — Callingly is a lead response management software that automates immediate call and text follow-ups to new leads, integrating seamlessly with various CRMs and lead sources to enhance sales team responsiveness and conversion rates. — https://definable.ai/apps/callingly/
- **Callpage** — CallPage is a lead capture tool that enables businesses to connect with website visitors through immediate phone callbacks, enhancing lead generation and sales conversion rates. — https://definable.ai/apps/callpage/
- **ClickSend** — ClickSend is a cloud-based SMS and email marketing platform that enables businesses to send and receive SMS messages, manage contacts, and track campaign performance. — https://definable.ai/apps/clicksend/
- **Convolo AI** — Convolo.ai is an AI-powered communications platform designed to enhance sales calls and improve conversion rates through rapid lead response and integration capabilities. — https://definable.ai/apps/convolo_ai/
- **Dialmycalls** — DialMyCalls provides a mass notification system enabling users to send voice and text messages to contacts. — https://definable.ai/apps/dialmycalls/
- **Dialpad** — Dialpad is a cloud-based business phone system and contact center platform that enables voice, video, messages and meetings across your existing devices — https://definable.ai/apps/dialpad/
- **Dripcel** — Dripcel is a platform for automated SMS and Email marketing, campaign compliance, and data-driven lead generation. — https://definable.ai/apps/dripcel/
- **Godial** — GoDial is an automatic call app, mobile CRM, and outbound dialer software that transforms your phone into a call center, enabling efficient management of calls and contacts. — https://definable.ai/apps/godial/
- **Mocean** — Mocean enables SMS, voice, and verification services, integrating messaging capabilities into applications for multifactor authentication or customer engagement — https://definable.ai/apps/mocean/
- **Msg91** — MSG91 is a cloud communication platform offering secure and robust APIs for SMS, WhatsApp, Email, Voice, and more, enabling businesses to connect with their customers across multiple channels. — https://definable.ai/apps/msg91/
- **OneSignal REST API** — The OneSignal REST API enables developers to programmatically send push notifications, emails, and SMS, manage users and subscriptions, and configure apps. — https://definable.ai/apps/onesignal_rest_api/
- **OneSignal User Auth** — OneSignal is a customer engagement platform offering push notifications, email, SMS, and in-app messaging services. — https://definable.ai/apps/onesignal_user_auth/
- **Realphonevalidation** — RealPhoneValidation offers real-time phone number validation services, providing information on connectivity, phone type, carrier, and more. — https://definable.ai/apps/realphonevalidation/
- **Retell AI** — RetellAI captures calls and transcripts, enabling businesses to analyze conversations, extract insights, and enhance customer interactions in one centralized platform — https://definable.ai/apps/retellai/
- **Sendlane** — Sendlane is a cloud-based marketing automation platform that helps eCommerce businesses engage customers through personalized email and SMS campaigns. — https://definable.ai/apps/sendlane/
- **SMS Alert** — SMS Alert is a versatile multi-channel communication platform enabling businesses to engage with customers through SMS, RCS, Telegram, and WhatsApp via a unified REST API. — https://definable.ai/apps/sms_alert/
- **Spoki** — Spoki is an Italian platform that integrates WhatsApp's official APIs to automate communication for marketing, sales, customer support, and payments. — https://definable.ai/apps/spoki/
- **Synthflow AI** — Synthflow AI provides AI-powered voice agents to automate both inbound and outbound calls, enhancing customer engagement and operational efficiency. — https://definable.ai/apps/synthflow_ai/
- **Telnyx** — Telnyx is a communications platform offering voice, messaging, and data services through a global private network. — https://definable.ai/apps/telnyx/
- **Teltel** — TelTel is a telecom operator and software provider offering tools for automated voice and SMS communication, including cloud-based contact center software, Voice/SMS API, VoIP/SIP trunking, auto dialer, webphone integration, Click2Call, and webhook-based call event tracking for CRM integration. — https://definable.ai/apps/teltel/
- **Textit** — TextIt is a platform that enables users to build scalable, interactive chatbots across various channels without writing code. — https://definable.ai/apps/textit/
- **Tpscheck** — TPSCheck is a service that verifies in real-time if a phone number is registered with the UK's Telephone Preference Service (TPS) or Corporate Telephone Preference Service (CTPS), providing insights on validity, location, type, and provider of the number. — https://definable.ai/apps/tpscheck/
- **Unisender** — UniSender is a simple and easy-to-use service for email and SMS marketing campaigns — https://definable.ai/apps/unisender/
- **Waboxapp** — Waboxapp integrates WhatsApp messaging into CRM systems, allowing businesses to centralize customer communications for sales and support — https://definable.ai/apps/waboxapp/
- **WhatsApp** — Enables interaction with customers through the WhatsApp Business API for messaging and automation. — https://definable.ai/apps/whatsapp/

## Related

- HTML page: https://definable.ai/apps/category/phone-&-sms/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt