# Plain

Plain is a customer support platform for B2B teams that brings Slack, Microsoft Teams, Discord, email, live chat, in-app forms and a help center into one workspace. It includes AI features such as Customer Agent, which answers customers, and Sidekick, an assistant for support staff, along with workflows, SLAs and insights. The product is API-first, so its functions can be extended, automated or embedded in a customer's own tools.

Page: https://slateindex.ai/brand/plain · data of 2026-11-03

## Facts

- Founded: 2020
- Headquarters: London, United Kingdom
- Employees: 11–50
- Company type: Private, venture-backed
- Latest funding: Series A
- Deployment: Cloud (AWS eu-west-2, London)
- Best for: Fast-growing B2B and developer-tools companies that support customers in Slack, Teams, Discord and email
- Compliance: SOC 2 Type II, HIPAA, GDPR

## Products

- Customer Agent: AI agent that talks to customers and resolves issues across channels.
- Sidekick Agent: AI assistant for support staff that drafts replies and searches knowledge using customer context.
- Workflows: Automation for routing, triage, escalation and actions in external systems.
- Insights: Detects themes, trends and churn risks across support conversations.
- Lookup: Codebase integration that answers technical questions.
- Help Center: Combines AI self-serve help, a knowledge base and a customer inbox.
- Broadcasts: Sends messages to customers across their channels from Plain.
- API: API-first developer platform with webhooks, events, MCP and custom channels.

## Rankings

| Category | Rank | Visibility | Mentions |
|---|---|---|---|
| Help Desk | 24 of 37 | 1.5 | 2 |

## By engine

| Engine | Visibility | Mention rate |
|---|---|---|
| chatgpt | 1.3 | 3.7% |
| google_ai_mode | 0.0 | 0.0% |
| perplexity | 3.1 | 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, “Plain AI visibility profile”, https://slateindex.ai/brand/plain, data of 2026-11-03. Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).