Plain review (2026): is it worth $45 a month per user, billed yearly?
Support platform for B2B teams, built around Slack and AI agents
Black Friday: is there a Plain sale?
Plain report card
Fair · out of 4.0 · graded Nov 12, 2026
Best for B2B support that lives in Slack
Plain is a support platform for B2B software teams that pulls in Slack, email and in-app conversations next to customer cards and two AI agents. Foundation is $45 a user and stops at 5 seats, and SLAs, escalation paths and Microsoft Teams wait on Horizon at $99 a user.
Who Plain is for
- Fits if your customers are software companies that talk to you in Slack
- Works for a team of 5 or fewer on Foundation
Who Plain is not for
- Pricey if you grow: Foundation caps at 5 seats and Horizon needs 3 to 10 at $99 each
- Skip it if you need SLAs or Microsoft Teams without Horizon
- Tight if you lean on AI: 1,000 credits a month on Foundation, with extra at $10 per 1,000
- Watch out: SSO, SCIM and HIPAA need the sales-only Frontier plan
Why Plain gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- DValue for money$45 per user a month billed annually is above the dearer quarter ($39), Foundation stops at 5 seats, and SLAs and escalation paths need Horizon at $99, past the dearest tenth ($89).
- CFree plan and trialA 7-day trial with no credit card. There is no free plan.
- CFeaturesSlack, email and in-app channels, customer cards, workflows, a help center and AI agents. The listing's gap: SLAs, Teams and CRM links are Horizon only.
- CEase of useNo store rating on record, and workflows, channels and AI agents need setting up.
- BPlatforms and integrationsWeb only, with 8 listed integrations including Linear, Jira and Slack. No phone or desktop app on record.
What these grades rest on. Graded from this listing, whose facts were read from Plain's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/plain#review"><img src="https://toolgpa.com/badge/plain.svg" alt="Plain: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where Plain stands among help desk and live chat tools
Plain's GPA of 2.0 is higher than 15 of the 66 other help desk and live chat tools we grade, and level with 9.
It stands best on platforms and integrations (B, above 6 of 66) and worst on value for money (D, above 0).
Its paid plans start at $45 a month for each person, against a middle price of $29 for the category: 43 of the 57 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 19 tools score higher and cost less.
Each grade against the category
Every bar is all 67 help desk and live chat tools we grade, cut by the letter each got. Plain’s own letter is outlined.
- DValue for moneyAbove 0 of 66, level with 17
- CFree plan and trialAbove 18 of 66, level with 34
- CFeaturesAbove 3 of 66, level with 42
- CEase of useAbove 5 of 66, level with 56
- BPlatforms and integrationsAbove 6 of 66, level with 54
Price against what you get
Each dot is one of 59 help desk and live chat tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Plain, or make your own?
Keep it
To replace Plain you would be making one mailbox that several people work at once. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 42 of the 66 other help desk and live chat tools grade higher. It costs $540 a year.
What you could make
- Help desk and help center: an app builder makes these well.
What you could not
- One mailbox that several people work at once.
- An AI model answering your customers from your own help articles.
- Connections to other products, each kept working as those products change.
- A chat box on your site that reaches you the moment a customer types.
- It is priced for each person, which means accounts and billing for a team.
What this rests on. Plain’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Plain?
Plain is a customer support platform for B2B software teams. It takes in conversations from Slack, email, in-app forms and live chat, and pairs them with customer cards, workflows and a pair of AI agents. Pricing is per member seat with a monthly pool of AI credits.
Worth knowing
- Foundation is capped at 5 member seats and Horizon needs at least 3, up to 10; larger teams go to the sales-only Frontier plan.
- AI credits are limited per month (1,000 on Foundation, 2,500 on Horizon); extra credits are $10 per 1,000 up to $100 per 10,000.
- SLAs, escalation paths and Microsoft Teams need Horizon at $99 per user / month; SSO, SCIM and HIPAA need Frontier.
- Plain lists a startup program with a $6,000 flat fee for Horizon, 10 seats and 12 months, for early-stage teams of ten or fewer.
Key features
- Customer Agent
- An AI agent that answers customers directly. It uses 100 credits per resolution on every plan.
- Sidekick Agent
- An AI agent for the support team that uses 15 to 300 or more credits a task depending on effort.
- Slack and email channels
- Support threads come in from Slack channels, email addresses, in-app forms and live chat, with Microsoft Teams and Discord on higher plans.
- Customer cards
- Unlimited customer cards show account data next to a thread, with a stated data freshness of 15 seconds.
- Workflows
- Unlimited workflows, auto-labelling, urgency detection and thread summaries are on every plan.
- Developer platform
- The comparison table lists an API, webhooks, events, MCP and custom channels.
Plain pricing
As of Nov 12, 2026, Plain is a paid product with a free trial, starting at $45 per user / month, billed annually ($55 billed monthly).
- Starts at
- $45 per user / month, billed annually ($55 billed monthly)
- Free plan
- None
- Free trial
- 7-day free trial, no credit card required
| Plan | Price | What you get |
|---|---|---|
| Foundation | $45per user / month, billed annually ($55 billed monthly) | Up to 5 member seats, unlimited viewers, 1,000 AI credits a month, Slack, email and in-app channels, Linear, Jira and a help center. 7 days of reporting. |
| Horizon | $99per user / month, billed annually | 3 to 10 member seats, 2,500 AI credits a month, Microsoft Teams, SLAs, business hours, escalation paths, CRM integrations and all-time reporting history. |
| Frontier | Custom | Custom credits and seats, multiple workspaces, SSO and SCIM, HIPAA, custom contracting and a dedicated customer success manager. Billed annually. |
Read from plain.com on Nov 12, 2026. Prices change, so confirm with Plain before you buy.
Ways to pay less
- Startups50% off Horizon for early-stage startups
A $6,000 flat fee covers 12 months and 10 seats of Horizon. Eligibility is VC-backed up to $5 million in funding, 10 or fewer on the support team, and not already a customer.
Stated on plain.com - Annual discount20% off Foundation with annual billing
The pricing page shows Foundation at $45 per user a month billed annually against $55 billed monthly, labelled a 20% saving.
Stated on plain.com
Works with
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Common questions
Does Plain have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. Plain is listed for Web.
Does Plain have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. Plain is listed for Web.
Is Plain open source?
Plain is not described as open source on its own site, as read on Nov 12, 2026.
Does Plain have an API?
Yes. Plain offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 12, 2026.