21X logo - Conversational AI brand identity

21X (2026)

Formerly known as Structurely

Expert Reviewed
by Dr. William BobosLast reviewed: Oct 18, 2026

AI Calling, Texting & Appointment Setting

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1 ratings
4.0
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Platform
Web App / Mobile App

Overview

21X (formerly Structurely) is a conversational AI platform for voice, SMS, RCS, email and chat, no longer only for real estate. Structurely provides AI-powered calling, texting, and email automation for real estate professionals to engage leads, qualify prospects, and schedule appointments across multiple channels with seamless CRM integration.

21X Conversational AI showing Conversational AI - AI Calling, Texting & Appointment Setting

Key Features

Personalized AI interactions

Multi-turn conversations feel natural, like talking to a knowledgeable colleague.

Multi-modal AI interactions

Multi-modal capabilities mean fewer tool switches and faster problem-solving. 21X ships SDKs for Python and JavaScript/T

Device-agnostic access

Multi-platform support ensures everyone can use 21X regardless of their device preference.

Developer-friendly API

RESTful API design follows industry standards for easy integration.

Client libraries available

2 SDKs (e.g., Python and JavaScript/TypeScript) help dev teams launch prototypes quickly.

Try before you commit

Demo and trial environments let teams experience 21X before committing.

Rate this Tool

4.0 / 5based on 1 rating

About 21X

“AI Calling, Texting & Appointment Setting”

21X is a conversational ai tool developed by Structurely (US) designed for marketing professionals, business executives and customer service. Structurely is a Conversational AI and Marketing Automation solution for real estate professionals that provides AI-powered calling, texting, email automation, lead qualification, and appointment setting with seamless CRM integration. Pricing: Subscription. With over 21K monthly visits, 21X has established a significant user base. 21X follows a subscription pricing model, with plans from $299/mo to $1499/mo. It is available on Web App, Mobile App and API. Developer integration is supported through Python and JavaScript/TypeScript SDKs. 21X integrates with Plugin/Integration. It competes in the same space as Hatch, Follow Up Boss and Brivity. Explore more conversational ai tools or browse all categories.

21X Snapshot

Key facts we track so you can judge fit before visiting the provider.

Primary category
Conversational AI
Best fit
Marketing Professionals, Business Executives, Customer Service
Platforms
Web App, Mobile App, API
Provider context
Structurely - US
Known integrations
Plugin/Integration
Developer access
API documentation, Python, JavaScript/TypeScript
Data handling
US hosting, Privacy policy linked

Before you choose 21X

  • Confirm 21X's current limits, renewal terms, and seat pricing on the official site.
  • Review privacy, retention, and data-processing terms before using sensitive data.
  • Test the integrations or API path against one real workflow before rollout.
  • Make sure the supported platform matches where your team actually works.

Listing data is compiled from structured provider information, public signals, submissions, and periodic checks where available. Treat this page as a shortlist aid, then verify pricing, compliance, and product limits with the provider before making a business-critical decision.

How 21X Works

Understanding the core functionality and approach of 21X.

Usage-based pricing keeps 21X aligned with actual consumption. Finance teams pay only for the outcomes the organization really uses. Native connectors for Plugin/Integration reduce manual data entry in 21X.

Key Features

Explore what makes 21X stand out.

Personalized AI interactions

Multi-turn conversations feel natural, like talking to a knowledgeable colleague.

Multi-modal AI interactions

Multi-modal capabilities mean fewer tool switches and faster problem-solving. 21X ships SDKs for Python and JavaScript/TypeScript alongside Web App, Mobile App, and API apps, so both end-users and developers are covered.

Device-agnostic access

Multi-platform support ensures everyone can use 21X regardless of their device preference.

Developer-friendly API

RESTful API design follows industry standards for easy integration.

Client libraries available

2 SDKs (e.g., Python and JavaScript/TypeScript) help dev teams launch prototypes quickly.

Try before you commit

Demo and trial environments let teams experience 21X before committing.

Use Cases

Discover how different audiences leverage 21X.

Business Executives

Enhance teaching & learning

Students get instant explanations and tutoring support outside of classroom hours.

Business Executives

Work from anywhere

Collaboration features keep distributed teams aligned without constant meetings.

FAQ about 21X

What is 21X and what does it do?

21X is AI Calling, Texting & Appointment Setting. 21X (formerly Structurely) is a conversational AI platform for voice, SMS, RCS, email and chat, no longer only for real estate. Structurely provides AI-powered calling, texting, and email automation for real estate professionals to engage leads, qualify prospects, and schedule appointments across multiple channels with seamless CRM integration. Available on Web App, Mobile App, API, 21X is designed to enhance productivity and deliver professional-grade conversational ai capabilities.

How much does 21X cost?

21X offers Subscription pricing options. Entry $299/month (100 contacts), Explore $499/month (200 contacts), Elevate $999/month (500 contacts), Established $1499/month (1000 contacts) Current estimates suggest pricing from $299 – $1,499 / month. Pricing is designed to scale with your needs, from individual users to enterprise teams. For the most current pricing details and plan comparisons, visit the official 21X pricing page or contact their sales team for custom enterprise quotes. Browse AI tools by pricing model to compare options.

Is 21X secure and compliant with data privacy regulations?

21X takes data privacy seriously and implements industry-standard security measures. Data is hosted in US, providing transparency about where your information resides. For comprehensive details about data handling, encryption, and privacy practices, review their official privacy policy. Security and compliance are continuously updated to meet evolving industry standards.
What platforms does 21X support?
21X is available on Web App, Mobile App, API. The web application provides full functionality directly in your browser without requiring downloads. Mobile apps enable you to work on-the-go with synchronized data across devices. API access allows developers to integrate 21X capabilities directly into their own applications and workflows. This multi-platform approach ensures you can use 21X wherever and however you work best.
How can I try 21X before purchasing?
21X offers a demo version that lets you explore key features hands-on. 21X typically offers trial periods or limited access to help you evaluate the platform. Testing the platform before committing ensures it meets your specific requirements and integrates smoothly with your existing workflows. Support for English makes it accessible to global users.
What file formats does 21X support?
21X accepts Text input through chat interfaces on websites, social media, or messaging platforms. as input formats, making it compatible with your existing files and workflows. Output is delivered in Structured text responses with lead information for real estate professionals to follow up and convert., ensuring compatibility with downstream tools and platforms. This format flexibility allows seamless integration into diverse tech stacks and creative pipelines.
Who develops and maintains 21X?
21X is developed and maintained by Structurely, based in US. Most recently updated in October 2026, the platform remains actively maintained with regular feature releases and bug fixes. This ongoing commitment ensures 21X stays competitive and aligned with industry best practices.
How do I get access to 21X?
21X is freely available to everyone without registration requirements. You can start using the platform immediately without going through lengthy approval processes. A demo version is also available for those who want to explore features before committing.
How is usage measured and billed in 21X?
21X uses Pay-as-You-Go as billing metrics. This usage model ensures you only pay for what you actually use, avoiding unnecessary overhead costs for features you don't need.
What deployment options does 21X offer?
21X supports Cloud deployment configurations. Cloud-hosted options provide instant scalability without infrastructure management overhead. Choose the deployment model that best aligns with your technical requirements, security constraints, and operational preferences.

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For tool providers

Keep 21X's listing accurate

Providers can update product facts, pricing context, screenshots, and launch notes. Paid placements are labeled separately and do not replace editorial or data-quality review.

How to Evaluate 21X

Compare 21X with Hatch, Follow Up Boss, Brivity and other alternatives before you decide. The goal is not to pick the most popular product; it is to find the tool that fits your actual workflow, risk level, and budget.

  1. Step 1Run the demo with one real marketing professionals task, not a sample prompt.
  2. Step 2Model the full monthly cost at your expected usage, including seats, limits, and overages.
  3. Step 3Verify the integration path with your existing stack before you commit.
  4. Step 4Review privacy, retention, and compliance terms before using sensitive data.

For developer teams, inspect the Python SDK and JavaScript/TypeScript support. Review the API documentation for auth, rate limits, errors, and export behavior. For broader context, browse more conversational ai tools for marketing professionals, or compare this page against the category hub. New to AI tool evaluation? Start with AI Tool Navigator.

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