Web · Popunder
Popunder Advertising
Buy popunder traffic across 225+ geos on vetted web placements. Pay only for unique users — anti-fraud filters bots before the bid.
How it works
From bid to conversion in seconds
1
Click triggers your URL
When a visitor clicks anywhere on a participating site, a new browser window opens behind the active tab and loads your landing page.
2
Real user, full attention
The popunder waits until the user closes the front tab — giving your offer 5–60 seconds of undivided screen time on average.
3
Frequency capping per user
Default 1 popunder per user / 24h. Configure 1/3/6/12/24 hours from the dashboard.
Specifications
Everything a media buyer needs to know
Trigger First-click on host page
Devices Desktop, Android, iOS web
Frequency cap Configurable 1/3/6/12/24h
Pricing model CPM with dynamic bidding, Auto CPA target bidding, CPA pricing in beta on request
Minimum CPM $0.30
Minimum deposit $100
Why this format
Strengths of Popunder
- Cheapest entry-point for testing new offers and creatives
- Works without cookies — perfect for crypto, sweepstakes, iGaming
- Easy A/B: 5–10 landings can be rotated automatically
- Real-time spend pacing across geo / device / OS / browser
FAQ
Popunder, frequent questions
What landing page should I use for popunder?
A self-contained pre-lander with the offer above the fold, large CTA button, and trust signals (logos, reviews). The first 3 seconds decide whether the user closes the tab or engages.
Are popunders blocked by browsers?
Modern browsers throttle them but do not block on user gesture. Our SDK uses native click-handlers compliant with Chrome 121+, Safari 17+, and Firefox 122+ requirements.
How do you filter fraudulent traffic?
In-house antifraud plus Kaminari, our independent verification partner, screen for bots, datacenter IPs, repeat fingerprints, and headless browsers before the impression is counted.
Can I target a specific OS?
Yes — granular targeting by OS, OS version, browser, language, ISP/carrier, and connection type (Wi-Fi / 3G / 4G / 5G).
Can I pay per conversion (CPA)?
Two ways. Auto CPA bidding is self-serve: keep CPM billing, set a target cost per conversion, and the bidder tunes bids per traffic source to hit it. Fixed CPA pricing — you name the price of a conversion and pay only when it happens — is in beta and available on request, because it runs on direct-publisher popunder inventory only and works when the tracked event is a registration or install rather than a deposit.
General questions
More about Adexium
What is the minimum deposit?
Minimum deposit is $100 for advertisers. Funds are credited within minutes for crypto and instantly for cards.
What payment methods are supported?
We accept a wide range of payment options to fit any geography: 
Advertisers: top up from $100. Publishers: payouts every 3 business days, min $100.
USDTTRC-20, ERC-20, BEP-20, TON
TONToncoin native
BitcoinBTC native
EthereumETH + ERC-20
CapitalistUSD / EUR
Visa / MastercardInstant top-up
Wire transferSWIFT / SEPA
What geos are supported?
225+ geos worldwide, including tier-1 (United States, United Kingdom, Germany, France, Canada, Australia), tier-2 (Eastern Europe, LATAM, SEA), and tier-3 markets. Targeting works down to city level.
How do payouts work for publishers?
Automated payouts every 3 business days. Minimum payout is $100. We pay via USDT (TRC-20/ERC-20/TON), TON, Capitalist, and bank wire. No manual approvals or hidden fees.
What tracking and postbacks are supported?
Server-to-server (S2S) postbacks, pixel tracking, and macros for all major trackers: Voluum, Keitaro, Binom, RedTrack, BeMob. Real-time conversion reporting.
How does anti-fraud work?
Three layers, none of them a black box. Before the auction, the bidder rejects requests from iframes, datacenter ASNs, hammering IPs and malformed user-agents; proxy/VPN traffic is blocked on SSP supply and targetable by a flag on direct placements. On the click, a JavaScript challenge by Kaminari — an independent antifraud vendor — filters bots before the redirect. Daily, every placement is scored on outcomes: enough clicks with zero conversions for any advertiser, or the same email registering across accounts, and it is blocked network-wide. Confirmed fraud is refunded.
Can I whitelist or blacklist sources?
Yes — whitelist and blacklist by source ID, app ID and zone, per campaign. There is no optimizer that silently drops sources for you. If you want automation, Auto CPA re-bids per source toward your target cost per conversion and leaves the source list under your control.
Can I pay per conversion instead of CPM/CPC?
Yes, two ways. Auto CPA bidding is self-serve on every format: you set a target cost per conversion and the bidder tunes CPM/CPC bids per traffic source to hit it. CPA pricing, where you pay a fixed price per conversion and nothing otherwise, is in beta and available on request — it runs on direct-publisher In-Page Push and Popunder inventory only, so we agree the conversion event and geos with you first. Both require S2S postback conversion tracking.
Explore more
Other Adexium ad formats
Web · Push In-Page CPC $0.001
Push In-Page
In-page push ads: push-style banners shown right inside the publisher page, no subscription needed.
Learn more → Web · Web Push CPC $0.001
Web Push Notifications
Push notification ads: subscribed users receive your message system-wide, even when the browser is closed.
Learn more → Telegram · Mini Apps CPM $1.70
Telegram Mini Apps
Native ad placements inside Telegram Mini Apps — high attention, premium audience.
Learn more → Telegram · Bot Messages CPM $1.50
Bot Messages
Sponsored messages sent to subscribers of partner Telegram bots — direct inbox, high engagement.
Learn more → Telegram · iMe Messenger CPM $1.00
iMe Messenger
Exclusive ad slots in the iMe alternative Telegram client — 4M+ active crypto-native users.
Learn more →Ready to launch Popunder?
Top up $100 and start a campaign today, no contract, no minimums beyond deposit.