Get help with MainBook
Email support@mainbook.ai and a human replies within one business day. There is no phone queue and no chatbot in front of us. If you are signed in, the form on your Help page reaches the same inbox and arrives with your account already attached.
What we can help with
A conversion looks wrong
Send the conversion ID and say which figure is off and what it should be. If you can attach the statement, we can reproduce it exactly — but never send a password or an API key by email.
Credits and billing
If a conversion failed because of an error on our side, the credits go back to your balance automatically — you do not need to write to us. For anything else about a charge, tell us the date and the last four digits of the card.
API and MCP
Say which way you connected — an API key, the terminal sign-in, or the hosted MCP server — and paste the exact error text. Keys and access tokens themselves must stay out of the message.
Account, data and deletion
You can delete any document and your whole account from inside the app. Write to us if something blocks you, or for a data request under GDPR or CCPA.
What to put in the message
None of this is required — write in whatever form suits you. It just saves a round trip.
- 01
The conversion ID, if it is about one specific file.
- 02
The bank and the statement period — some layouts only appear at certain banks.
- 03
Where you were: the web app, the API, or the MCP server.
- 04
The exact message you saw, copied rather than described.
Never include a PDF password, an API key or an access token. We never ask for any of them, and a support mailbox is the wrong place for a secret.
Answers that are already written down
How files are stored and when they are deleted is on the security page. Whether your bank is covered is on the supported banks list. Connecting an assistant is covered by the MCP setup guide and the API documentation. Keys and connected apps live on your developer page, the money rules are in the refund policy, and how long we keep support correspondence is in the privacy policy.
Frequently asked questions
- How do I contact MainBook support?
- Email support@mainbook.ai. A human answers within one business day. Signed-in users can also use the form on the Help page, which reaches the same inbox with the account details already attached.
- A conversion came out wrong. What do you need from me?
- The conversion ID, the bank and statement period, and which figure is wrong together with what it should be. That is usually enough to reproduce the problem without asking you for anything else.
- Do I have to ask for a refund when a conversion fails?
- Not when the failure is on our side — those credits return to your balance automatically. Credits already spent on a completed conversion are not refundable, though you can ask us to look at an exceptional case.
- Can I send you my bank statement so you can look at the problem?
- Yes, if you are comfortable with it, and it is usually the fastest route. A statement sent to support is kept with the ticket rather than on the conversion schedule — the privacy policy sets out how long support correspondence and its attachments are retained, and what happens to them if you delete your account. Never include a PDF password or an API key in the message.
- I need help with the API or the MCP server. Same address?
- Yes — support@mainbook.ai covers the web app, the Developer API and the MCP server. Tell us which one you were using and paste the exact error, and never paste the key or token itself.
Who you are writing to
MainBook is operated by Human Beyond LLC. Company details and the full terms are in the legal documents.