Until today, buying on Adexium meant CPM or CPC: you paid for impressions or clicks and carried the conversion risk yourself. That changes with two releases that both optimize for the same number — your cost per conversion — at two different levels of control.
CPA pricing is a new billing model: you name the price of a conversion and pay only when it happens. Auto CPA is a new bid strategy: billing stays CPM/CPC, but instead of a fixed bid you set a goal, and the bidder does the per-source work a media buyer normally does by hand.
CPA pricing: name your price per conversion
The simplest possible deal: you define what a conversion is (via S2S postback), set the price you’re willing to pay for it, and that’s the only thing you’re ever charged for. No conversion — no charge. The volume risk moves from your budget to the network.
- Formats: In-Page Push and Popunder
- Self-serve: CPA appears next to CPM/CPC in the campaign form — no manager, no insertion order
- Tracking: conversions arrive through the same postback you already use for reporting
CPA pricing fits offers with a fast, well-defined conversion event — registrations, deposits, installs, subscriptions — where you know your economics and want a fixed acquisition cost from day one.
Auto CPA: a target instead of a bid, on every format
Auto CPA works like target-CPA bidding in Google Ads, but on pop, push, and Telegram inventory. You keep CPM/CPC billing and full campaign control; what changes is who calculates the bids.
Here is what the bidder actually does with your goal:
- Per-source bids. For every traffic source, the bid is derived from your target and that source’s real conversion rate on your campaign. A placement that converts gets bid up; a weak one gets bid down — automatically, per source, not per campaign.
- Hard cutoffs. A source whose realized CPA runs above 3× your target isn’t just bid lower — it’s dropped from the auction entirely. Budget stops flowing to traffic that misses the goal.
- Continuous learning. Conversion stats refresh every few minutes. New sources enter on a conservative baseline and graduate to per-source optimization as their own conversions accumulate, with a hard bid cap protecting you while the algorithm is still learning.
Auto CPA is available on all six formats — Popunder, In-Page Push, Web Push, Telegram Mini Apps, Bot Messages, and iMe — and it’s a per-campaign toggle: switch an existing campaign from Fixed bid to Auto CPA (or back) at any time.
Why this matters: the whitelist effect, automated
We’ve published the manual version of this playbook before. In the Philippines popunder case study, two independent advertisers cut CPA from $37–56 to $1.30–1.72 by moving converting placements into a whitelist by hand. In the TMA postback case study, an advertiser reached $0.04 CPA the same way — postbacks in, weak sources out.
Auto CPA runs that loop for you, continuously, at a per-source granularity no human checks hourly. The discovery campaign, the conversion analysis, the whitelist rebuild — that’s now the bidder’s job. Your job is a realistic target and a postback that fires.
What you need to start
One prerequisite: conversion tracking. Both features are gated on it — the options unlock once your account has registered a test conversion or a real one. Setup is about 5 minutes in the Tracking section, with macros for Voluum, Keitaro, Binom, RedTrack, and BeMob, or a plain S2S call from your backend.
Everything else is standard Adexium: $100 minimum deposit, self-serve dashboard, real-time stats down to the source level so you can watch what the algorithm is doing with your money.
The full breakdown — including the FAQ on how CPA pricing and Auto CPA differ and when to use which — lives on the new CPA & Auto CPA page. Or skip the reading: create a campaign, flip the toggle, and set your number.
