Home / Publishers / Compare / PostbackX Calls vs InboundX
PostbackX Calls vs InboundX for publishers
PostbackX Calls is invite-only pay-per-call routing that ranks buyers by expected value. On InboundX, a publisher gets a portal, postbacks that keep trying and a reason on every no-bid.
Pay-per-call routing. PostbackX Calls figures are from its public pages, checked 6 Nov 2026. See publisher pricing and how InboundX works for publishers.
01 — Figures
Published side by side
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| Feature | PostbackX Calls |  InboundX |
|---|---|---|
| Monthly fee | Not publishedInvite or demo only. | $0No monthly platform fee on a routing account; tracking numbers carry their own monthly rent. $0 to send calls to a network. |
| Per minute | Not published | $0.06One price per connected minute, from a prepaid balance. Numbers have a monthly rent. |
| Tracking numbers | Not published | Monthly rentEach tracking number has a monthly rent, taken from your balance. |
| Pings / RTB fee | Not published | $0No ping or RTB fees. |
| Real-time bid or ping post | YesInbound and outbound ping/post. | YesA bid carries the payout and holds a buyer for 10 to 30 seconds. |
| Portal for your publishers | Not published | YesCalls, pings, postbacks, earnings and invoices. |
| Postbacks or webhooks | Not published | YesRetried every minute for up to 7 days. |
| Reason on every no-bid | Not published | YesEvery no-bid comes back with a plain reason. |
| Your AI on your account | Not published | YesAccount MCP. Every change is previewed first. |
02 — Why InboundX
Why publishers pick InboundX over PostbackX Calls
01
A reason on every no-bid
Every no-bid comes back with a plain reason, in the response and in your portal. PostbackX Calls's public pages do not describe no-bid reasons.
02
Your own publisher portal
Your portal shows your calls, pings, postbacks, earnings and invoices. PostbackX Calls's public pages do not describe a publisher portal.
03
Postbacks that keep trying
A postback your platform doesn't accept is retried every minute for up to 7 days. PostbackX Calls's public pages do not describe postbacks.
04
Your own AI on your account
Connect Claude, ChatGPT or another app that supports MCP to your login. It reads your calls, earnings and invoices, and every change comes back as a preview before it happens. PostbackX Calls's public pages do not describe an MCP connection.
03 — Them
What PostbackX Calls publishes well
PostbackX Calls, at postbackcalls.com, is a pay-per-call routing platform that ranks buyers by expected value rather than top bid. Access is by invite request.
- Ranks buyers by expected value rather than top bid.
- Inbound and outbound ping/post, dynamic number insertion and a call-flow builder.
- Duplicate handling, caps and per-call attribution. Transcripts and scoring are marked beta.
It is aimed at operators paid by the billable call: inbound and outbound ping/post, dynamic number insertion, a call-flow builder, duplicate handling, caps and per-call attribution. Transcripts and scoring are marked beta.
PostbackX Calls does not publish prices. Access is by invite or demo.
04 — InboundX
How InboundX is set up for a publisher
Send calls to a network on InboundX by real-time bid or by phone number. A ping gets a bid that carries the payout and holds a buyer for 15 seconds by default, 10 to 30 per campaign. A no-bid always says why.
Your portal shows calls, pings, postbacks, earnings and invoices. Postbacks are retried every minute for up to 7 days until your platform answers. Connect your own AI to your account over MCP; every change is previewed first.
Sending to a network costs you nothing on InboundX: the network pays you. Routing your own calls to your own buyers is $0.06 per connected minute, with recording, pings and bids included. Each tracking number has a monthly rent.
Publisher pricing · Real-time bidding for calls · Call routing platform · Docs
05 — Questions
PostbackX Calls vs InboundX questions
- 01How do you get access to PostbackX Calls?
- By invite request or a demo. It does not publish prices.
- 02Is PostbackX Calls the same as PostbackX?
- No. PostbackX Calls at postbackcalls.com routes calls. PostbackX at postbackx.com is an ad tracking and attribution dashboard.
- 03What does PostbackX Calls charge?
- PostbackX Calls does not publish prices. Access is by invite or demo. Figures are from PostbackX Calls's public pages, checked 6 Nov 2026.
- 04Does PostbackX Calls support real-time bidding or ping post?
- Yes, on its public pages: inbound and outbound ping/post. InboundX answers every ping with a bid that carries the payout, or a no-bid with a reason.
- 05What does InboundX cost a publisher?
- Sending calls to a network on InboundX costs you nothing: the network pays you for calls that convert. Routing your own calls to your own buyers is $0.06 per connected minute from a prepaid balance, with recording, pings and bids included and no monthly fee. Each tracking number has a monthly rent.
- 06Why do publishers pick InboundX over PostbackX Calls?
- A reason on every no-bid: Every no-bid comes back with a plain reason, in the response and in your portal. PostbackX Calls's public pages do not describe no-bid reasons. Your own publisher portal: Your portal shows your calls, pings, postbacks, earnings and invoices. PostbackX Calls's public pages do not describe a publisher portal. Postbacks that keep trying: A postback your platform doesn't accept is retried every minute for up to 7 days. PostbackX Calls's public pages do not describe postbacks. Your own AI on your account: Connect Claude, ChatGPT or another app that supports MCP to your login. It reads your calls, earnings and invoices, and every change comes back as a preview before it happens. PostbackX Calls's public pages do not describe an MCP connection.
06 — Next
Start getting paid for your calls.
Apply as a publisher, then test your ping URL before you send a real call.
Sources, checked 6 Nov 2026
Public vendor pages, not a hands-on test. "Not published" means the figure was not found on those pages, not that the product lacks it. Prices change. Other publisher comparisons: Ringba vs InboundX for publishers · Retreaver vs InboundX for publishers · CallGrid vs InboundX for publishers · Beso Network vs InboundX for publishers · PostbackX vs InboundX for publishers · Callmart vs InboundX for publishers · Ringfuel vs InboundX for publishers · TrackDrive vs InboundX for publishers · Invoca vs InboundX for publishers · Phonexa vs InboundX for publishers · Marketcall vs InboundX for publishers · CallRail vs InboundX for publishers · CallTrackingMetrics vs InboundX for publishers · Dialics vs InboundX for publishers · Teldrip vs InboundX for publishers.