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Wherever you message

WhatsApp, Slack, Telegram, your books are already there.

Snap a receipt, ask a question, or run an action from whichever app you're already in. Same Finn, same tools, no dashboard required.

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Slack
MessagingLive
Finn, what's in my inbox today?
F3 receipts to review and one invoice overdue. Want me to chase it?
FFinn works from Slack, WhatsApp or Telegram, same tools.
Live

In short

AccountsOS lets you do accounting from WhatsApp, Telegram, Slack, MS Teams, SMS, email forwarding and Gmail auto-scan: same chat agent, same 60+ tools as the in-app chat. Snap receipts, ask questions about your books, create invoices, log expenses, without opening the dashboard.

7
Channels
Same
AI agent
Same
60+ tools

Everything it does

WhatsApp

  • Twilio-powered, your own AccountsOS WhatsApp number
  • Snap receipt photos and PDFs
  • Voice messages transcribed and acted on
  • Text questions and commands
  • Same AI agent as the in-app chat

Telegram

  • Public bot @accountsOS_bot
  • Receipt photos and PDFs
  • Voice messages
  • Text chat
  • Bot commands for common actions

Slack

  • DM the AccountsOS app
  • @-mention in any channel
  • Drag receipt files into chat
  • Slash commands for common queries
  • Channel-wide deadline alerts (configurable)

Microsoft Teams

  • Code complete; awaiting Microsoft Business credential roll-out
  • Same surface as Slack (DM + channel)
  • OneDrive / SharePoint integration on roadmap

Email forwarding

  • Forward to documents@accounts-os.com
  • Authorised forwarder allowlist for your team
  • Spam / signature filtering on inbound
  • Deduplication by content hash

Gmail auto-scan

  • OAuth-connected with read-only scope
  • Watches inbox for receipts and invoices
  • Auto-imports without you forwarding anything
  • You stay in control: revoke any time

SMS

  • Twilio-powered, fallback when data is poor
  • Text receipts and short commands
  • Less rich than WhatsApp but always works

Multi-company aware

Run several businesses? Each channel remembers which one you mean.

  • Default company stored per channel in user_channel_preferences
  • /switch <name> changes the active company mid-thread
  • /company shows which is active
  • Single-company users get silent auto-pick; multi-company users onboard once
  • Per-user integration scope: your Slack stays yours even across companies

Capabilities at a glance

WhatsApp (Twilio): chat, snap, voice

Telegram bot @accountsOS_bot

Slack: DM, @-mention, file uploads, slash commands

MS Teams (code complete)

SMS fallback (Twilio)

Email forward to documents@accounts-os.com

Team email forwarding allowlist

Gmail OAuth auto-scan

All channels share the same AI agent and 60+ tools

Per-channel default-company preferences

/switch and /company slash commands

Per-user integration scope (not per company)

How It Works

1

Connect a channel

Settings → Integrations. Pick WhatsApp, Telegram, Slack or others. One-tap auth.

2

Use it like any other chat

Snap a receipt. Ask a question. Run an action. We respond from the same AI agent.

3

Same intelligence everywhere

WhatsApp, Slack and the in-app chat share state. A receipt forwarded by WhatsApp shows up in your in-app inbox immediately.

4

Audit trail

Every channel interaction is logged in the in-app chat history.

By the numbers

WhatsApp
Live
Twilio-backed
Telegram
Live
@accountsOS_bot
Slack
Live
DM or @-mention
MS Teams
Code complete
Awaiting credential roll-out

Real-world Use Cases

Drive home → log an expense

Voice-message your AccountsOS WhatsApp: 'Just paid £42 for client lunch with Sarah, was on my personal card.' Logged.

Slack-first team

Co-founder drags a vendor invoice into the AccountsOS DM in Slack. We process and route it to Bills (AP).

On Telegram constantly

You live in Telegram. Use @accountsOS_bot to forward receipts and ask 'how much did I spend on AWS this quarter?'

Emails for everything

Configure any vendor to send invoices to documents@accounts-os.com. Auto-imported, classified, routed.

Plays nicely with

Twilio

Live

WhatsApp + SMS backbone.

Telegram Bot API

Live

Powers @accountsOS_bot.

Slack

Live

Workspace app + slash commands.

MS Graph

Coming Soon

Teams integration awaiting roll-out.

Gmail

Live

OAuth-connected inbox scanning.

Resend (inbound)

Live

Email forwarding to documents@accounts-os.com.

Why founders pick this over the spreadsheet

Reduce friction: accounting happens in apps you're already in

Capture in the moment, not at month-end

Voice and photo-first: no typing required

Team can submit without learning a new tool

Same intelligence everywhere: no degraded mobile UX

Frequently Asked Questions

Which channels are live today?

WhatsApp, Telegram, Slack, SMS, Email forwarding (with team allowlist), and Gmail auto-scan are all live. Microsoft Teams is code-complete and shipping next.

Does WhatsApp need a separate phone number?

You message a dedicated AccountsOS WhatsApp number: your own number stays private. Powered by Twilio.

What can the Slack bot do?

Anything the in-app chat can: read your books, snap receipts, create invoices, log expenses, run payroll, generate reports. Plus channel-wide deadline alerts on a schedule you choose.

Is Gmail auto-scan secure?

OAuth with read-only scope. We only fetch messages that look like receipts/invoices, never store unrelated email, and you can revoke at any time.

Can multiple team members use the same channel?

Yes. Invite team members and add their phone numbers (WhatsApp/SMS) or email addresses (forwarding). Only allowlisted team members can submit, so randoms can't pollute your books.

Does it cost extra to message via WhatsApp/SMS?

No additional cost on any plan. Twilio fees are absorbed by us.

Explore more of AccountsOS

Receipt & Document Capture

Snap, forward, drop, dictate: receipts reach your books from 9 different channels.

Ask Finn (AI Chat)

Talk to your books. Ask anything. Finn does the work.

Email Forwarding

Forward to documents@accounts-os.com: receipts, invoices, statements all flow in.

Claude Desktop & MCP

Your books inside the AI assistant you already use.

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