AffKeeper

The problem with affiliate links: the product behind them can sell out or get delisted — and you keep sending readers (and paid traffic) to a page nobody can buy from. AffKeeper watches your links so you find out before you lose the sale.

Works instantly, no account needed:

• A full URL shortener on your own domain (yoursite.com/go/product) — clean short links that redirect locally and instantly, with click counting. The /go/ prefix is configurable.
• Insert links with a shortcode: [affkeeper slug="abc123"]Buy now[/affkeeper] (add domain="…" when the same slug exists on more than one of your domains)
• Affiliate links render with rel="nofollow sponsored" automatically (correct disclosure); plain redirects get rel="nofollow".
• A Links screen in wp-admin: search, filter, edit in place.

Connect a free AffKeeper account to add monitoring:

• Product availability — know when an AliExpress product goes out of stock, low stock or gets removed. Your first affiliate link is monitored out of the box; connect your own (free) AliExpress API keys to monitor all of them on your private API quota.
• Broken-link checks — monitored redirect links are tested for 404/410, server errors and unreachable hosts.
• Email alerts the moment a monitored product becomes unbuyable — or a redirect breaks.
• You choose what’s monitored — a per-link “Monitor in AffKeeper” toggle. Local links are unlimited and free; only monitored ones use a plan slot. Affiliate links default to on.
• Real analytics in your panel — click totals sync within seconds, plus referrer and device breakdowns per click (and countries, when your server provides a geo header).
• Auto-fallback for links hosted on AffKeeper domains — clicks go to a replacement product or category page while the original is unavailable, so the traffic still converts. (Links hosted on your own site always redirect from your site, so they alert instead of rerouting.)
• One dashboard for links across all your sites, with clicks and history per your plan.
• Your local links sync to the account automatically — the redirect stays on your domain, so nothing in your posts ever breaks.

A dashboard widget shows 30-day clicks and warns when links point to unavailable products; the Links screen floats dead products to the top so the next action is obvious.

External services

This plugin communicates only with the AffKeeper service at https://affkeeper.com over its authenticated REST API, and only after you enter an API key. What is transmitted:

• Your API key (authentication) and this site’s hostname.
• For links you sync: their destination URLs, titles, slugs and short-link URLs.
• Click statistics: absolute totals and per-day counts for synced links.
• Per click of a synced link: the referrer URL and browser user-agent; when your server provides a geo header (e.g. Cloudflare), the visitor’s two-letter country code. The visitor’s IP address itself is never transmitted.

Read back: your links, their click counts and availability status. No data is sent anywhere else, and nothing at all is sent until you connect an account.

Terms: https://affkeeper.com/terms/ — Privacy: https://affkeeper.com/privacy/