What unwanted email costs.

Estimate the time your team loses to unwanted messages. Treat fraud risk separately.

Estimate your inbox cost.

Change any value. The result is an estimate, not a Klar savings claim.

Messages handled
44,000
Hours interrupted
367
Annual handling cost
€16,500

Your equation
100 × 2 × 220 × 30s ÷ 3600 × €45

The cost is not only time.

The calculator stops at handling time. It does not pretend to predict theft.

FBI, 2025 IC3 Annual Report ↗
$3.05bn BEC losses reported to the FBI IC3 in 2025

This is reported aggregate loss across complaints, not the expected loss for your company and not a Klar savings claim.

Keep payment controls in place.

  1. 01Verify unusual payments and bank-detail changes through a known channel outside the message.
  2. 02Keep two-person approval for exceptional transfers, even when the request appears to come from leadership.
  3. 03Filter bulk spam at the inbox or server, then train people to stop when a request changes the normal process.
See how CEO and invoice fraud works →

Filter the volume. Keep the controls.

Klar filters identified spam and phishing as messages arrive. Payment checks still protect the transactions that matter.

For teams using Apple Mail, Klar is free on each Mac.

Download on the App Store

For company mail servers, run the same engine in the SMTP path.

Klar Pro →