Agent-ready email and messaging
129 verified email and messaging sites, 69 of them transactable — every one probed live, with the date it was checked. Figures generated 27 Sep 2026 08:57 UTC
Checks passed across the 140 probed hosts: Markdown negotiation 122 · Markdown twin at a predictable URL 91 · llms.txt 128 · API catalog 36 · MCP server card answers 94.
✓Transmit docs.transmit.dev
Transmit provides API documentation for sending emails, SMS, voice calls, and tracking analytics with developer-friendly SDKs.
also in SDKs and API clients✓Hatch Documentation docs.usehatchapp.com
Hatch is an AI-powered communication platform for service businesses to automate and manage customer interactions across voice, SMS, and email.
also in AI agents✓Simple AI docs.usesimple.ai
Documentation for Simple AI voice platform to build, deploy, and manage AI-powered phone agents with API and integrations.
also in conversational and voice AI✓Waterfall.io API Documentation docs.waterfall.io
Complete API reference for Waterfall to find and enrich contacts, prospect by title and company, verify emails, and more.
also in search and data APIs✓Zavu docs.zavu.dev
Zavu provides an API and runtime to build and deploy AI agents that communicate via WhatsApp, SMS, voice, email, Telegram, and Messenger.
also in AI agents✓Stoked get.stokedhq.com
Stoked provides brand advocacy software enabling premium DTC brands to connect buyers with real owners via SMS, email, and chat to build trust and increase sales.
also in marketing software✓Privy Knowledge Base help.privy.com
Privy Knowledge Base provides documentation for an e-commerce marketing platform including guides on email, SMS, automation, segmentation, and billing.
also in marketing software✓IPROG TECH iprogtech.com
IPROG TECH builds launch-ready websites, SMS workflows, mobile apps, and business systems for growing teams.
also in technology✓Dialbox dialbox.ca
Dialbox provides 24/7 AI phone answering, call qualification, appointment booking, and follow-up services for Canadian service businesses.
also in programming languages and frameworks✓Dialbox dialbox.us
Dialbox provides 24/7 AI phone answering, call qualification, appointment booking, and follow-up services for American service businesses.
also in programming languages and frameworks✓Summate docs.summate.io
Summate creates AI-powered personalized digests from newsletters, YouTube subscriptions, and RSS feeds delivered on a user schedule.
also in AI agents✓TruFlow AI docs.truflow.ai
TruFlow provides AI-powered voice call and SMS automation with intelligent agents handling conversations without coding.
also in AI agents✓Martin docs.trymartin.com
Documentation for Martin, a personal assistant accessible via phone, SMS, WhatsApp, email, and Slack with integrations for calendar, inbox, reminders, and notes.
also in productivity and documents software✓Siren docs.trysiren.io
Siren provides documentation for APIs, SDKs, and UI-Kits to manage multi-channel notifications for AI agents and internal tools.
also in AI agents✓Curious Mints guides.curiousmints.com
Curated quick start guides for developers to rapidly integrate APIs using Python with practical examples.
also in programming languages and frameworks✓mintlify help.convertalk.com
Convertalk is a chatbot builder software that automates conversations and streamlines lead generation with account creation and bot setup features.
also in construction and roofing✓NLPearl Documentation developers.nlpearl.ai
Documentation for NLPearl, a platform to build and deploy AI voice and text agents handling conversations in multiple languages and channels.
also in AI agents✓GBG Loqate docs.loqate.com
Documentation site providing guides, API references, and integration details for GBG Loqate location and data validation services.
also in search and data APIs✓Wavix Docs docs.wavix.com
Product guides, API references, and resources to help integrate Wavix SMS and Voice services into applications.
also in conversational and voice AI✓email-sdk.dev email-sdk.dev
An open-source TypeScript SDK for transactional email with 23 adapters and a local CLI for configuration checks.
also in SDKs and API clients✓Notifly notifly.tech
Notifly provides CRM marketing automation reacting to user behavior with push notifications, popups, emails, SMS, and Kakao brand messages.
also in CRM and sales software✓Niche www.getniche.ai
Niche AI is a 24/7 lead conversion and automation platform that handles calls, SMS, workflows, and outreach to book leads automatically.
also in workflow automation software✓Infobip www.infobip.com
Infobip provides a platform for customer engagement across multiple communication channels including messaging, voice, and programmable APIs.
also in customer support software✓Viajalo www.viajalo.ar
Viajalo is a SaaS platform for tourism agencies in Argentina integrating CRM, WhatsApp Business, booking, marketing, payments, and a B2B network.
also in travel✓BIG Launcher biglauncher.com
BIG Launcher is an Android home screen app designed for seniors and people with vision problems to simplify phone use.
also in embedded devices and firmwareMore in Developer APIs & infrastructure: payments · e-signatures · AI agents · conversational and voice AI · generative media · blockchain and web3 · search and data APIs · analytics and observability · databases and storage · cloud and hosting · security and identity · extensions and plugins · embedded devices and firmware · programming languages and frameworks · build and test tooling · SDKs and API clients · developer platforms · ecommerce infrastructure