Plain

Plain is a customer support platform aimed at B2B and technical teams. It combines a shared support system, AI agents, routing workflows, and a knowledge base in one product, so teams can handle triage, escalations, and follow-ups without stitching together separate tools. The company positions it as support infrastructure — a system built to work for both human agents and AI agents.

Requests come in through the channels customers already use: Slack, Microsoft Teams, email, in-app chat, Discord, contact forms, or a headless support portal you can embed in your own product. From there, drag-and-drop workflows handle routing, business hours, SLA timers, and escalation paths. The AI Suite includes a Customer Agent that can resolve requests on its own and a Sidekick Agent that assists human reps, plus AI-suggested responses and Insights reporting. Plain also emphasizes being open to orchestration across AI agents rather than locking teams into a single one.

Pricing is per user. Foundation costs $55/user/month billed monthly or $45 annually; Horizon costs $139/user/month monthly or $99 annually; Frontier is custom-priced for larger organizations. Every plan starts with a 7-day free trial that requires no credit card. Integrations include Linear, Jira, and CRM tools, and higher tiers add SSO/SCIM, advanced security, and white-glove onboarding.

Best for

• B2B SaaS teams supporting technical customers who file issues from Slack, Linear, or Jira
• Support teams that want AI agents handling routine requests alongside human reps
• Companies that need SLA tracking, business-hours handling, and defined escalation paths
• Teams that want a hosted help center plus a headless portal embedded in their own product
• Larger organizations that need SSO/SCIM and governance controls

Frequently asked questions

How much does Plain cost?

Foundation is $55/user/month monthly ($45 annually), Horizon is $139/user/month monthly ($99 annually), and Frontier uses custom pricing. A 7-day free trial is available with no credit card required.

Which channels does Plain support?

Customers can reach you through Slack, Microsoft Teams, email, in-app chat, Discord, contact forms, or a headless support portal built into your product.

Does Plain include AI features?

Yes. The AI Suite includes a Customer Agent for autonomous resolution, a Sidekick Agent that assists human reps, AI-suggested responses, and Insights reporting.

Is there a mobile app?

The site describes a web-based product and shows no iOS, Android, or browser extension apps.

What integrations does Plain offer?

Linear, Jira, and CRM integrations are listed, and Slack and Microsoft Teams work as support channels. SSO/SCIM is available on higher tiers.

Alternatives

• Kommunicate — pick it if you mainly need AI chatbots and live chat with human handoff rather than a full support desk.
• VirtualReception.AI — an AI-powered customer service platform; consider it if you want AI-led interactions instead of a team-based support system.
• Sophie AI — a human-like AI agent; choose it if you want a single interactive AI rather than a complete support platform.
• AdaraChatbot — a 24/7 chatbot for handling inquiries; simpler if you just need automated chat coverage.