Email List Intelligence Engine · since 2017

Stop getting flagged by your ESP —
and start making more money from your list.

Clean your list, protect your sender reputation, and discover the hidden subscribers who actually open, click, and buy.

Lists cleaned
4,563
Emails verified
1.26B
Avg. open lift
+37%
klean13.com/jobs/48291/gold-finder
Gold Finder Report

We found gold on your list.

Live
8.2%Gold Segment
Engaged · The Gold
82,400subscribers
Noise · Stop mailing
917,600subscribers
Estimated revenue per campaign
$247,200

Assumes $3/engaged subscriber. Your number is probably higher.

§ 01 · The problem

Most email marketers only clean when they're forced to.

That means lower inbox rates. More spam complaints. Hours of your life spent emailing people who will never buy. The result — you're paying, every single send, to reach people who don't make you money.

  • 01

    Your ESP flags you

    Complaints pile up. Your account lands on a watchlist. One bad send away from suspension.

  • 02

    Your inbox rate craters

    Gmail, Yahoo, and Microsoft quietly route you to promotions — or worse, spam. You're sending into the void.

  • 03

    You mail the wrong people

    Dormant accounts. Bots. Complainers. Every send to them drags your reputation — and the real buyers never hear from you.

§ 02 · The engine

Meet KLEAN13.
The email list intelligence engine.

We don't just clean your list. We show you who's worth emailing — and who's costing you money.

§ 03 · What happens when you upload

Upload your list.
We find the gold.

  1. i.

    Clean in seconds

    1M+ emails processed in minutes. Spamtraps, bots, dormants, typos — all surgically removed.

  2. ii.

    We identify your Gold Segment

    The 10–30% of your list that actually engages — the ones who open, click, and buy.

  3. iii.

    You mail smarter. Immediately.

    Smaller list. Higher engagement. Better reputation. More revenue per send.

Most users discover 10–30% of their list is where 100% of the revenue comes from.

klean13.com/jobs/48291/gold-finder
Gold Finder Report

We found gold on your list.

Live
14.5%Gold Segment
Engaged · The Gold
72,500subscribers
Noise · Stop mailing
427,500subscribers
Estimated revenue per campaign
$217,500

Assumes $3/engaged subscriber. Your number is probably higher.

§ 04 · Choose your plan

Stop paying panic prices.

Smart marketers join Players Klub and never worry about compliance again.

Emergency Fix

When your ESP forces you to clean

$97/ 10,000 Kredits

Higher Kredits cost · pay panic pricing

  • List Hygiene
  • Compliance Protection
  • Gold Finder Report
  • Priority Processing
  • Monthly Reports
Best Value

Players Klub Basic

For marketers who want to stay compliant & profitable

$79/mo · 15,000 Kredits

Lower Kredits cost · save every month

  • List Hygiene
  • Compliance Protection
  • Gold Finder Report
  • Priority Processing
  • Monthly Deliverability Reports

Have a larger list or need more Kredits? Explore Enterprise Packs →

One-time cleaning keeps you compliant.
Players Klub makes you profitable.

"

We stopped blasting our entire list and started mailing just the gold. Revenue per send jumped immediately.

A Players Klub member·100K+ list

Stop guessing.
Start sending smarter.

Join Players Klub