Email Tracking for WordPress

Log every e-mail your WordPress site sends, catch bounces and complaints, and keep a suppression list. Works with WooCommerce too.

Download free plugin (v0.1.0) Download Pro: 14 days free, no card Pricing v0.1.0

Install on WordPress: download the zip and upload it under Plugins → Add New → Upload Plugin. Once the free plugin is listed on WordPress.org you will also be able to install it from there.

Requires WordPress 6.5+ and PHP 8.1+. Works on any WordPress site; WooCommerce is optional and switches on the shop features.

Free plugin

What the free plugin does

HULO Email Tracking keeps a record of every e-mail your WordPress site sends through wp_mail(): password resets, new-account e-mails, contact-form notifications, plugin e-mails, everything.

Works on any WordPress site. With WooCommerce it also names each WooCommerce e-mail (new order, processing, completed, refunded, invoices…), links it to its order and customer, and adds an "E-mails sent" box to the order screen (HPOS and legacy order storage). With HULO Payments it links receipts and payment e-mails to the payment.

What the free plugin does

E-mail log. Date, e-mail type, recipient, subject, delivery status and what it was about, with filters by status, type, recipient, customer, order/payment and date.
Delivery status. Failed sends are marked with the mail error. Every message gets its own Message-ID so your mail provider's reports can be matched to it.
Bounce and complaint webhook. Point your mail provider at the signed webhook (HMAC-SHA256, rate limited). Hard bounces and complaints mark the e-mail and add the address to the suppression list; soft bounces are recorded without suppressing anyone.
Suppression list. See, search, add and remove addresses.
Dashboard widget with the last seven days.
Retention. The log is pruned daily in small batches (365 days by default, optional row cap), through Action Scheduler when available and WP-Cron otherwise.
Privacy tools. Works with WordPress's Export and Erase Personal Data tools and suggests text for your privacy policy.
Safe public endpoints. Tracking links are signed together with their destination, so they cannot be used as an open redirect; an optional host allowlist adds a second check. Network addresses are only ever stored as a salted one-way hash.

The plugin sends nothing anywhere: no account, no external service, no data leaves your site.

HULO Email Tracking Pro

The Pro add-on adds:

Open tracking (a 1×1 image) and click tracking (signed redirect links) in HTML e-mails, with a per-e-mail history of opens and clicks: e-mail program, country, bot and prefetch detection, never the raw IP address. Unsubscribe and opt-out links are never rewritten.
Open rate, click rate and click-to-open rate per e-mail type.
CSV export of the filtered log.
Sending that skips addresses on the suppression list (password-reset e-mails always go out).
A weekly report e-mail and a setup checklist.

Try Pro free for 14 days, no card.

Pro add-on

Email Tracking Pro

Needs the free HULO Email Tracking plugin. Works on any WordPress site, with or without WooCommerce. Pro adds:

Open tracking: a 1×1 image in HTML e-mails. Click tracking: every link becomes a redirect through your own site, signed together with its destination (never an open redirect). Unsubscribe and opt-out links are never rewritten; plain-text e-mails are never modified.
History per e-mail: up to 50 opens and 50 clicks with e-mail program, platform, country (WooCommerce geolocation when active, otherwise your CDN's country header; no external lookup) and bot/prefetch flag. Network addresses are stored only as a salted hash; secrets in clicked links (reset keys, tokens) are redacted.
By e-mail type: sent, opened, open rate, clicked, click rate, click-to-open, bounced, failed and suppressed for each e-mail type (WordPress, WooCommerce when active, HULO Payments when active).
CSV export of the filtered log (formula-safe cells).
Suppression list enforcement: e-mails to suppressed addresses are not sent and are logged as "suppressed". Password-reset e-mails always go out.
Weekly report every Monday and a setup checklist.

Every install starts with a 14-day evaluation with everything on and no card. Subscribe from the plugin page; the licence installs itself. If the licence lapses, the Pro features pause and all data and settings are kept.

Pricing

Free, then Pro when you want it

Free plugin

£0

Free forever, GPL-licensed.

Pro, monthly or annual

£6.95/month

The first 14 days are free with no card. Subscribe from the plugin page when you're ready; the first charge is taken when the 14 days end. Annual billing gets two months free. Cancel any time.

Pro, lifetime

£139

One payment for one store, including updates.

Buy lifetime

Prices follow the currency picker at the top of the page; the checkout bills in GBP, USD, EUR, AUD and CAD. One licence covers one WordPress site.

Install

Installation

Install "HULO Email Tracking" from Plugins → Add New, or upload the zip, and activate it.
Go to HULO → Email Tracking. Every e-mail sent from now on appears in the log.
Optional: in Settings, set a bounce webhook secret and give your mail provider the webhook address shown there.

For Pro, upload hulo-email-tracking-pro-0.1.0.zip the same way (Plugins → Add New → Upload Plugin) with the free plugin active. The 14 days start automatically, and Pro updates itself from WordPress's Plugins screen.

FAQ

Frequently asked questions

Do I need WooCommerce?

No. It logs every e-mail on any WordPress site. WooCommerce only adds order and customer links and the order-screen box.

Does it work with my SMTP plugin?

Yes, as long as it sends through wp_mail(), which almost every SMTP and mail-API plugin does.

Which e-mails are labelled?

WordPress account e-mails (password reset, new account, password and address changes, core updates), every WooCommerce e-mail when WooCommerce is active, and HULO Payments e-mails when that plugin is active. Everything else is logged as "Other WordPress e-mail".

What does the bounce webhook expect?

A POST of JSON {"messageId": "…", "status": "bounced" | "complained", "bounceType": "hard" | "soft", "reason": "…"} to /wp-json/hulo-email-tracking/v1/bounce, with the HMAC-SHA256 of the raw body (hex, optionally prefixed sha256=) in the X-Signature header, keyed with the secret from the settings. Without a secret the webhook is switched off.

Is any data sent to HULO or anyone else?

No. The free plugin makes no outbound connections.

Can other plugins label their e-mails?

Yes: do_action( 'hulo_email_tracking_context', array( 'type' => 'my-email', 'to' => $address ) ); just before calling wp_mail().

Changelog

0.1.0

First release: log of every WordPress e-mail, bounce and complaint webhook, suppression list, dashboard widget, retention, privacy export and erasure; with WooCommerce, e-mail names, order and customer links and an order-screen box; with HULO Payments, e-mails linked to payments.