# Plain

> AI-powered support platform for B2B teams, unifying Slack, email and chat in one workspace

- Category: [Help Desk Software](https://finderatlas.com/categories/help-desk-software)
- Pricing: Free trial
- Website: https://www.plain.com
- Platforms: Web, API
- API: available
- Made by: Plain, founded 2020, London, United Kingdom
- Last updated: 2026-11-07
- FinderAtlas page: https://finderatlas.com/tools/plain

## Overview

Plain is a customer support platform built for B2B companies. It pulls customer conversations from Slack, Microsoft Teams, Discord, email, live chat, a help center and in-app forms into a single workspace, so support teams can handle requests from business customers without switching tools. The company describes it as support infrastructure that can be configured with no code or extended with code through its API.

## Key features

- Multichannel Inbox
- Ari AI Agent
- Sidekick
- Workflows
- Insights
- Bring Your Own Agents
- API
- Help Center and Knowledge Base

## Pricing

- **Foundation** ($45/user/mo): Small teams getting started with support
- **Horizon** ($99/user/mo): Growing teams with more complex workflows
- **Frontier** (Custom): Larger organizations needing governance and control

## Best for

- Teams that support business customers through shared Slack or Teams channels and want AI triage, routing and an API-first setup

## Who uses it

- B2B SaaS companies
- Support teams
- Customer success teams
- Startups
- Engineering-led organizations

## Strengths

- Built around B2B support, with Slack, Teams and Discord channels alongside email and chat.
- Ari and Sidekick AI agents are included from the entry plan.
- API-first design allows custom workflows and embedding.
- 7-day trial without a credit card, plus a 50% startup discount.
- Enterprise options include SSO, SCIM and HIPAA on the Frontier plan.

## Limitations

- No permanently free plan; paid plans start at $45 per user per month.
- AI usage is metered in credits (1,000 per month on Foundation), which makes costs harder to predict.
- Microsoft Teams and CRM integrations require the $99 Horizon plan.
- No iOS or Android app was found.

## Not recommended for

- Consumer-facing support with high ticket volumes, or very small teams that need a permanently free plan

## Integrations

- Slack
- Microsoft Teams
- Discord
- Linear
- Jira
- PagerDuty

## FinderAtlas editorial scores (out of 10)

- Ease of Use: 8/10
- Feature Depth: 8.2/10
- Value for Money: 7.3/10
- Performance & Speed: 7.8/10
- Documentation & Support: 8/10

## Alternatives

- [Fernand](https://finderatlas.com/tools/fernand): Shared inbox with AI replies and Stripe context for small SaaS support teams ([compare](https://finderatlas.com/compare/fernand-vs-plain))
- [Pylon](https://finderatlas.com/tools/pylon): Run B2B customer support with humans and AI agents across Slack, Teams and email ([compare](https://finderatlas.com/compare/plain-vs-pylon))

## Recent updates

- 2025-02-01: Announced a EUR 14.5 million Series A led by Battery Ventures, with Index Ventures and Connect Ventures participating...

## FAQ

**Does Plain offer a free trial?**

Yes. Plain offers a 7-day free trial with no credit card required.

**How is Plain priced?**

Per user per month, with a monthly allotment of AI credits: Foundation is $45 and Horizon is $99 per user per month (billed annually), and Frontier is custom.

**What are credits used for?**

Credits pay for AI work. Ari uses 100 credits per resolution, and Sidekick uses between 15 and 300+ credits depending on effort. Extra credits can be bought in packs from $10 per 1,000.

**Which channels does Plain support?**

Slack, Microsoft Teams, Discord, email, live chat, a help center and in-app forms. Microsoft Teams requires the Horizon plan or higher.

**Is there a startup discount?**

Yes. Plain lists 50% off through its startup program.