# Epsilon

Epsilon provides data, technology and services for brand marketing. Its PeopleCloud Messaging product sends email, SMS, mobile push and in-app messages with segmentation, personalization and automation. The platform uses identity and AI to recognize individuals across channels, create a relevant message for each one, and learn from each interaction. Epsilon is part of Publicis Groupe, which acquired it in 2019.

Page: https://slateindex.ai/brand/epsilon · data of 2026-11-02

## Facts

- Founded: 1969
- Headquarters: Irving, Texas, United States
- Employees: 5,000+
- Company type: Division of Publicis Groupe
- Best for: Brands that want personalized, omnichannel marketing run at individual level and at scale
- Compliance: ISO 27001, SOC 2 audit for parts of the business

## Products

- PeopleCloud Messaging: Sends messages across email, SMS, mobile push and in-app channels, with segmentation, personalization and automation.

## Rankings

| Category | Rank | Visibility | Mentions |
|---|---|---|---|
| Email Marketing | 35 of 55 | 0.9 | 1 |

## By engine

| Engine | Visibility | Mention rate |
|---|---|---|
| chatgpt | 0.0 | 0.0% |
| google_ai_mode | 0.0 | 0.0% |
| perplexity | 2.6 | 3.7% |

## Definitions

- Visibility (0–100): how often and how high AI answers name the brand, weighted by position.
- Mention rate: share of collected AI answers that name the brand.
- Share of voice: the brand's mentions as a share of all brand mentions in the category.
- Citation authority: share of answers naming the brand that cite the brand's own site.

Cite as: SlateIndex, “Epsilon AI visibility profile”, https://slateindex.ai/brand/epsilon, data of 2026-11-02. Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).