Letter to public authorities – no printer, no post office
Registration office, municipality, city hall, trade licensing office or customs: many authorities want post. With mcpbrief you send your documents straight from the chat.

What to tell Claude or ChatGPT
What to keep in mind
- State the file or reference number in the subject line
- Upload signed forms as a scan or photo
- Choose registered mail when deadlines apply
- Check whether the authority requires electronic submission
Template to adapt
Paste the text into the chat and let Claude fill in the placeholders with your details – or paste it under “Send letter”. mcpbrief adds the letterhead, address and date automatically.
**[Subject] – Ref. [Reference number]** Dear Sir or Madam, With regard to the above matter, please find enclosed [documents / statement]. Yours faithfully, [Name, position]
Frequently asked questions
Which sender address appears on the letter?
Your address from your account (name or company) – it appears in the letterhead and as the return address in the envelope window. Replies from the authority therefore reach you as usual.
Can I send photos of forms?
Yes, JPG and PNG files are automatically converted into an A4 page and printed with an address sheet.
Note: This page is not legal advice. Check deadlines and formal requirements for your specific case.
Your first letter in two minutes
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Sign up free nowWhat individuals and businesses use mcpbrief for
Termination by registered mail
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Letter to the court
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Letter to health insurers & social security
Send applications, objections and certificates – for yourself, your family or employees – by post.
Letter to insurers
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