> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tranthor.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Reference

Welcome to the Tranthor Glossary! Here you'll find concise definitions for key terms you'll encounter as you build and automate customer engagement on Tranthor.

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## Action

A step in a [Journey](#journey) that performs work—most often sending a message to a user on a [Channel](#channel) such as email or SMS.

## Billing

How you pay for Tranthor. Billing is managed in the dashboard under **Settings →** [Billing](https://app.tranthor.com/settings/billing). There you can view your plan, update payment details, and access the customer portal for invoices and subscription changes. Only workspace admins can access billing settings.

## Plan

Your Tranthor subscription tier (e.g. Free, Starter, Growth, Enterprise). Plans determine feature access and usage limits. You can view or change your plan from the [billing page](https://app.tranthor.com/settings/billing) or the [pricing page](https://app.tranthor.com/pricing).

## Campaign

A programmatic approach to customer engagement. Campaigns in Tranthor automate how, when, and to whom messages are sent across various channels. [Journeys](#journey) are a type of campaign, built as a series of steps and automations.

## CDP

**Customer Data Platform**. A system that centralizes user data from multiple sources for use in downstream business tools—marketing, analytics, CRM, and more. Popular CDPs include [Segment](https://segment.com).

## Channel

A medium for delivering messages to users. Common channels include email, SMS, push notifications, and in-app messaging. Tranthor makes it easy to reach users wherever they are.

## ESP

**Email Service Provider**. Services that handle the infrastructure and deliverability required for reliable email messaging at scale (e.g., SendGrid, Postmark, Amazon SES).

## Event

A single record of a user’s activity—like a page view, purchase, or login. Events are the building blocks for segmentation, triggers, and analytics in Tranthor.

## In-App Messaging

Messages shown directly within your app or website, like onboarding popups or personalized banners. Useful for guiding users and boosting engagement without leaving your platform.

## Integration

Connecting Tranthor to other platforms and tools. Integrations fall into three main types:

* **Data Source**: Import user or event data into Tranthor.
* **Destination**: Export enriched data from Tranthor to other systems.
* **Channel**: Enable messaging via email, SMS, or other mediums.

## Journey

An automated sequence combining triggers, actions, and logic to deliver personalized experiences at scale. Journeys can onboard users, recover abandoned carts, run promotions, and more—all hands-off.

Other platforms may call these "workflows," "automations," or "sequences," but in Tranthor, journeys are the centerpiece of campaign automation.

## Reverse ETL

The process of syncing data from your warehouse (like Snowflake, Redshift, or BigQuery) back into business tools (like Tranthor or Salesforce) to activate insights and drive messaging.

## Segment

A dynamic group of users defined by shared attributes or behaviors—like region, product usage, or engagement history. Segments help target the right users with the right message at the right time.

## Template

Reusable message layouts containing logic and variables for dynamic personalization. Templates in Tranthor streamline content creation for emails, SMS, and more.

## Webhook

A mechanism for real-time data transfer between applications. Tranthor can both receive and send webhook notifications, enabling instant updates and integrations without polling.

## Workspace Member

Anyone with access to your Tranthor workspace, such as teammates collaborating on campaigns, data, and analytics.

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Need more clarity? Reach out anytime at [support@tranthor.com](mailto:support@tranthor.com)