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The open source Help Scout alternative

Help Scout is an email-first shared inbox with Docs, its knowledge base, and AI Answers billed per resolution. ChatterMate is an open source Help Scout alternative that starts from the other end: the AI agent answers first on nine channels, and the inbox, tickets and help center sit around it. You can run the Apache-2.0 code on your own servers.

Email-first or AI-first: what changes day to day

In Help ScoutMailbox

Every message lands as a conversation in a mailbox, and people write the replies. Beacon, its chat widget, puts Docs and AI Answers in front of that inbox. The product is designed for people writing good email.

In ChatterMateShared inbox

The AI agent answers first on every channel. A person steps in when the agent hands over, or whenever they choose to take a chat. The inbox is where your team sees all of it.

How email works here

Mail reaches ChatterMate through an inbound-parse webhook, SendGrid or Brevo style, and replies go out over SMTP from your own domain. Quoted text is stripped so the AI reads only the new message. Email is text only, and there is no Gmail or Outlook connect.

If most of your support is long email threads with attachments, Help Scout fits better. If most of it is short questions on your website and messaging apps, ChatterMate's agent answers them before anyone opens the inbox.

Side by side

ChatterMateHelp Scout
Source codeOpen core, Apache-2.0Closed
HostingOur cloud or your serversHelp Scout's cloud
Where it startsThe AI agent, with people stepping inA shared email inbox for people
People on the teamYour whole team on every paid planFree for 5 users, then $25, $45 or $75 a user a month
AI answersIncluded, counted per AI replyAI Answers, $0.75 per resolution
AI drafts for your teamNot offeredUnlimited on Plus
EmailInbound webhook and SMTP, text onlyNative mailboxes, the core of the product
Knowledge baseOne help center, from GrowthDocs: 1 site free, 2 on Standard, 3 on Plus, 5 on Pro
Channels9, including Telegram, LINE, Slack and SMSEmail, chat, WhatsApp, Instagram and Messenger. SMS and voice through integrations
TicketsYes, with AI investigationEmail-style conversations
HIPAANoOn Pro, with a BAA
Security certificationNone yetSOC 2 Type 2
Customer baseGrowing, 163 GitHub stars12,000+ brands, by its own count

Help Scout details come from its pricing page and AI resolutions help article on 8 November 2026, and the SOC 2, BAA and customer count on 7 November 2026. Check them before you decide.

What AI Answers costs at 1,000 chats a month

The AI line at 1,000 chats a month

Help Scout, 40% resolved
$300
Help Scout, 70% resolved
$525
Help Scout, 85% resolved
$637.50
ChatterMate Pro, any rate
$24.99

Say five people handle support and 1,000 chats a month go to the AI. Help Scout charges only when the AI resolves a chat, so the resolution rate matters. On the ChatterMate side, assume four AI replies per chat.

Help Scout Standard with AI AnswersChatterMate cloud
Seats5 × $25 = $125$0, the team is included
AI at a 70% resolution rate700 × $0.75 = $5254,000 replies, inside Pro at $24.99
Monthly totalAbout $650$24.99
If the AI improves to 85%The AI line rises to $637.50Still $24.99
If the AI resolves only 40%The AI line falls to $300Still $24.99, and you pay for the unresolved replies too
Your own model keyNot offeredAny paid plan, unmetered, plus your provider's bill

The fair reading: Help Scout only charges when the AI gets somewhere, once per chat, and it doesn't charge when the AI only greets the customer or the customer asks for more help. ChatterMate charges for every AI reply, including chats that end with a person, but each reply costs a fraction of a cent. New Help Scout accounts get three months of unlimited resolutions; existing customers don't. On annual plans, AI charges come out of your prepaid credit, which Help Scout notes will then run out sooner than a year.

Choose ChatterMate or Help Scout

Choose ChatterMate if

  • Your volume grows faster than your team, and you want the AI to answer first
  • You want a bill that doesn't rise as your resolution rate improves
  • You want AI answers and handover on WhatsApp, Telegram, LINE, Slack and SMS
  • You want to self-host or use your own model

Choose Help Scout if

  • Email between people is most of your support
  • You need HIPAA with a signed BAA
  • Your team wants AI drafts while they write
  • You need attachments in email and on other channels

Docs and the ChatterMate help center

Help Scout Docs

One Docs site on Free, two on Standard, three on Plus and five on Pro. Extra sites are $20 a month billed yearly. Beacon searches Docs before a customer writes in.

ChatterMate help center

From Growth: an editor with categories and drafts, AI-drafted articles from your knowledge base, your own domain, and thumbs up or down on each article. Optional Ask AI answers only from your content, limited to 10 questions a minute and 100 a day per visitor.

Moving your Docs

Docs addresses use /article/, not /articles/, so the import takes every article link on the page you give it. Import one category page at a time, up to 200 drafts each. Images are re-hosted and URL paths kept, so old links keep working.

When the spending limit is reached

Help Scout

You can set a monthly spending limit on AI resolutions. When you reach it, AI Answers is turned off in Beacon until the next cycle or until you raise the limit, and Beacon falls back to the support mode you chose, such as self-service.

ChatterMate cloud

A plan includes a set number of AI replies. When they run out, the AI stops answering until next month and the customer is told once that your team will reply, and your team answers from the inbox. Your own model key is not metered on paid plans, and a self-hosted install has no limit.

Both are honest cost controls, and both turn the AI off in your busiest month. Check your peak month, not your average, before you pick a limit or a plan.

Healthcare, HIPAA and compliance

Help Scout

Help Scout offers HIPAA compliance with a signed BAA, and lists it on its Pro plan, where its security table marks it as an add-on. Pro is $75 a user a month with a 10-user minimum, so at least $750 a month before the add-on. It also holds SOC 2 Type 2.

ChatterMate

ChatterMate has no HIPAA, SOC 2 or ISO certification, and won't sign a BAA. Self-hosting lets you choose where data lives, and chat messages, AI summaries and credentials are encrypted at rest, but that doesn't make you compliant. If your chats carry patient information and you need a BAA, choose Help Scout.

Moving from Help Scout

  1. Step 1Import your Docs

    On Growth, import each Docs category page into the help center and review the drafts before you publish.

  2. Step 2Teach the agent

    Add your Docs, website and PDFs as knowledge. Saved replies have no direct match, so paste the good ones in as plain-text knowledge.

  3. Step 3Connect your email

    Point your support address at the ChatterMate inbound webhook through SendGrid or Brevo inbound parse, and add your SMTP details so replies come from your domain. Send yourself a test.

  4. Step 4Replace Beacon

    Swap the Beacon script for our widget. Turn on source links so customers see which article an answer came from.

  5. Step 5Set up handover

    Turn on handover, create one group per Help Scout team and set office hours. The website widget asks for a name and email.

  6. Step 6Let old threads finish

    ChatterMate doesn't import past conversations, so keep Help Scout open until its threads close and export what you need.

Help Scout alternative questions

Is Help Scout open source?

No, as far as its site shows. It is a hosted service. ChatterMate's core is Apache-2.0 on GitHub.

Is ChatterMate email-first?

No. It starts from the AI agent across nine channels. Email works through an inbound webhook and SMTP, text only.

Can ChatterMate sign a BAA?

No. It has no HIPAA, SOC 2 or ISO certification. Help Scout offers HIPAA with a BAA today.

Does ChatterMate charge per resolution?

No. A plan includes a number of AI replies, counted whether or not the chat is resolved. Replies from your team never count.

Can I connect Gmail or Outlook?

Not directly. Mail arrives through an inbound-parse webhook, and replies go out over your SMTP server.

Will my Help Scout conversations come across?

No. ChatterMate doesn't import past conversations or customer records. Your Docs can come across through the help center import.

Plug it in

Add your website and start teaching your AI agent.

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