Your correspondence,
finally understood.
Local. Offline. With sources.
DCM Lumina reads your emails and PDFs, sorts automatically and answers questions about your archive — always with source citations.
Native Rust app. Local SQLite. No cloud lock-in, no account.

Sound familiar?
“I can't find anything.”
30 emails a day, 5 subfolders, Outlook search gives up. Last month's invoice from ACME turns into a scavenger hunt.
“I miss deadlines.”
A second-stage dunning notice was buried in an email you never opened. Early-payment discount gone — deadline missed.
“I retype data.”
Invoice number, IBAN, net/gross — copied by hand into DATEV or Excel. Typos guaranteed.
How DCM Lumina works
DCM Lumina in action.
From inbox to searchable archive — in seconds.
Everything included. Nothing superfluous.
SQLite database and Markdown wiki stay on your PC. No cloud, no telemetry, no account.
Scanned letters get the same treatment as digital PDFs. Tesseract integrated, German script first-class.
Extractor pulls data, validator LLM cross-checks the logic (e.g. gross = net + VAT). A green tick instead of hope.
Ask anything — answer in seconds, always referencing the original document. Tool-use searches archive plus wiki.
Invoice > €5,000 → accounting + cloud folder. Dunning detected → Slack webhook. Rules trigger actions automatically.
Due dates, early-payment days and dunning levels are extracted and logged. Never miss an early-payment discount again.
A supplier wiki builds itself: every new piece of correspondence adds structured knowledge in open Markdown files.
Multiple inboxes in parallel — business, personal, accountant. Fully automated, cleanly separated.
Passwords and API keys encrypted via Windows DPAPI. AI provider of your choice — including EU servers.
One-time. Clear. Fair.
Per-machine licence. No subscription, no account, no hidden costs.
DCM Lumina
- Full feature set, no restrictions
- Download link sent immediately by email
- No credit card, no account
- Incl. 30 min. personal setup call
- All updates included
Customisation Workshop
- 4 hours, 1:1 with Leanofy
- Define custom document types & workflows
- Configure accounting export (DATEV, Excel)
- Webhook integrations (Slack, Teams, Zapier)
- Ideal for special requirements
No more Outlook hunts
or copy-pasting data.
14 days free. No account. No risk.
Enter your email → download link arrives instantly.