Instant notification
As soon as a letter arrives at your address, we open it, scan it, and notify you by email + WhatsApp + dashboard in under 15 minutes.
Your correspondence.
Digital, instant,
wherever you are.
HMRC, IRS, Companies House, Mercury, Wise: any letter that reaches your company gets scanned, you get notified, and it's delivered to your dashboard. In real time.
Mailbox
3 new letters · 47 archived
Search...
HMRC · United Kingdom Action required
Corporation Tax · CT600 payment notice
Companies House · United Kingdom
Confirmation Statement approved
Wise Business
Statement · October 2026
12.500+
letters managed
<15 min
average scan time
100%
digitized and archived
2
countries · London & Delaware
What is the Mailbox?
You never miss a single letter. Never.
When you set up a company in the UK or Delaware, you receive official correspondence: HMRC notices, Companies House forms, IRS communications, bank statements, legal requests. The Mailbox takes care of it all.
Your advisor reads it first
If the letter is urgent or needs action (HMRC, IRS, Companies House), your personal advisor reviews it and explains what to do in Spanish, before you even open it.
Searchable archive
Every letter is OCR-scanned. Search by text, date, sender, or tag and find it in seconds. Your tax records, ready for audits or inspections.
What we handle
All the official mail for your company.
🇬🇧
HMRC
Corporation Tax · VAT · PAYE · Pension
🇬🇧
Companies House
Confirmation Statement · Annual accounts
🇺🇸
IRS
EIN · Form 5472 · Federal tax filings
🇺🇸
Delaware Division
Annual Report · Franchise Tax
🏦
Banks
Wise, Mercury, Revolut, etc.
⚖️
Legal notices
Court orders, lawsuits, legal requests
📋
Suppliers
Invoices, contracts, communications
📦
Couriers
Packages (with optional forwarding)
The process
From physical mailbox to digital notification.
This is the journey of every letter that reaches your company.
1
We receive
The letter arrives at your official address (London or Delaware). Our team logs it immediately.
2
We scan
Opening, high-resolution scanning, OCR (searchable text), and automatic classification (HMRC, IRS, bank, etc.).
3
We notify
Email + WhatsApp + dashboard. If it needs action, your advisor explains the next step in Spanish.
4
We archive
It's stored in your digital archive — searchable, downloadable, audit-ready. The physical copy is kept for 6 months (forwarding on request).
Interactive demo
Your physical mailbox, fully digital.
Letters that arrive at your registered office address are scanned and appear here. Lunnar reads them and extracts key data. Click one to view it.
app.aiden.es/buzon
DEMO
Unread
2
Total this month
12
Average scan time
≈ 4 h
Click the first letter to see it scanned and the AI extraction.
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SCANNED · AIDEN
Lunnar extraction
Confidence 98%
Sender
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Type
—
Due date
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Action required
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📝 Summary
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Questions
What you might be wondering.
Is the Mailbox included in all plans?
Yes. The Mailbox is included at no extra cost in all plans (Standard and PRO, UK and Delaware). It's part of your registered office address.
What if I need the physical original?
On request, we'll send the original to the address you provide. We keep originals for 6 months by default. International forwarding is billed at the actual shipping cost (~€10-25 depending on destination).
How quickly do you receive and notify?
Mail is processed in 4-hour windows during business hours (UK / Spain). The average time from receipt to notification is 15 minutes. Letters marked urgent (HMRC, IRS) are processed in under 1 hour.
Who opens the letters?
Aiden staff under signed confidentiality agreements. Letters that require action are reviewed by your assigned personal advisor, not by third parties. If you'd rather we didn't open letters (envelope scan only), you can enable that in settings.
What happens if an urgent legal notice arrives?
We activate a priority protocol: we call you by phone in addition to the digital notifications, and if the matter requires a lawyer, we connect you directly with one from our partner network (UK Solicitor or US Counsel depending on the country).
Do I have access to the full history?
Yes. As long as you're a customer, your digital archive is unlimited. Search by OCR text, filter by sender, date, type. If you cancel, we'll give you a ZIP export with your full history.
Your mail, wherever you are.
Mailbox included in every plan. No add-ons, no surprises.