Klaviyo charges $99/month for email optimisation. We built it better and made it permanently free.
Because once you see what WPBundle can do, you'll want the whole suite. Email Optimiser is our gift to you — no strings, no trial, no credit card. Forever free.
A/B test subject lines on real WooCommerce emails
Track open rates and apply winning variations automatically
Personalise order confirmation, shipping, and follow-up emails
Free forever — no monthly fees, no code required
Sent
2,847
Open Rate
28.4%
A/B Tests
5
Order Confirmed Email
Everything You Need to Win at Email
We built Email Optimiser for store owners who don't want to hire an agency but DO want to squeeze more value from every email.
Custom Email Templates
Personalise order confirmation, shipping, and delivery emails without writing a single line of code. Upload your logo, set brand colours, and customise headers and footers directly from the WordPress admin — every WooCommerce email reflects your store identity from day one.
A/B Testing
Test different subject lines on real outgoing WooCommerce emails and see which variants get opened more. Once enough data is collected, apply the winning subject line to all future sends of that email type with a single click.
Real-Time Analytics
Track email open rates broken down by email type — order confirmation, shipping update, refund, and more — updated in real time as your store sends. Monitor A/B test performance with automatic daily charts so you always know which variant is ahead.
Easy Configuration
Email Optimiser is configured entirely through the standard WordPress admin interface with no coding required. From installation to your first A/B test takes under two minutes — no developer, no staging site, no guesswork.
GDPR Compliant
Open tracking is powered by an optional 1×1 transparent pixel that you control — disable it with a single toggle if your customers prefer privacy. No personal data is stored on third-party servers; all tracking data lives on your own WordPress database.
Save Hours Every Month
Stop guessing about email strategy and start making data-driven decisions in minutes. Higher open rates on transactional emails means more engaged customers and more revenue recovered from emails your store was already sending anyway.
Real Results from Real Stores
Email Optimiser works for all kinds of WooCommerce stores. Here are three ways stores are using it right now.
Raise Open Rates
A clothing boutique A/B tested "Your order is confirmed ✓" vs "Great news — your order #12345 is on its way!" Subject line B got 31% more opens. They applied the winner store-wide, lifting customer engagement on every transactional email going forward.
Reduce Support Tickets
An electronics store added detailed shipping instructions and tracking links to their shipping email template using Email Optimiser's drag-and-drop editor. Support tickets about "where is my order?" dropped by 40% in the first month, freeing the owner to focus on growth instead of inbox triage.
Brand Consistency
A premium skincare brand replaced WooCommerce's default plain-text emails with fully branded HTML templates — logo, brand colours, and a personal sign-off from the founder. Customer replies to emails increased 3x because customers felt they were hearing from a real brand, not a generic store.
Email Optimiser vs. Klaviyo: The Right Tool for the Job
Most WooCommerce stores don't need a full ESP like Klaviyo just to improve their transactional emails. Email Optimiser does one thing exceptionally well: it makes your existing WooCommerce emails smarter.
| Feature | Email Optimiser | Klaviyo |
|---|---|---|
| Monthly cost | Free | $45–$700/month |
| Focus | WooCommerce transactional emails | Full email marketing platform |
| A/B testing | Subject lines (body coming soon) | Yes, full |
| Analytics | Open rates by email type | Advanced segmentation |
| Newsletters | No | Yes |
| Setup time | 2 minutes | 2–4 hours |
| Data hosting | Your server | Klaviyo's servers |
Also comparing
Omnisend starts at $16/month and is another full-featured newsletter and automation platform. Like Klaviyo, it's a great choice for campaigns — but it's overkill if all you want is better analytics and A/B testing on the order emails WooCommerce already sends.
Bottom line
Need newsletters and campaigns? Use Klaviyo. Need better analytics on your WooCommerce order emails? Email Optimiser is free.
Better Email Analytics in 2 Minutes
From install to your first live A/B test in under 2 minutes. No developer, no staging site, no third-party accounts.
Install
Download Email Optimiser from WordPress.org. Activate it in Plugins — Email Optimiser is immediately ready with zero configuration required.
Customise Templates
Go to WooCommerce → Email Optimiser → Templates. Upload your logo, set your brand colours, and customise the footer. Your changes apply to all WooCommerce emails instantly.
Create Your First A/B Test
Choose an email type (e.g. Order Confirmation), write two subject line variants, and set the traffic split. Email Optimiser handles the rest automatically on every real outgoing email.
Read Your Analytics
After 50+ sends, check the Analytics dashboard to see which subject line wins. Apply the winner store-wide with one click and start your next test.
Free forever for core features. No credit card required.
What You Actually Get
Higher Open Rates
Stores using Email Optimiser see 15-30% higher open rates on tested emails — that's real revenue recovered from subject lines that actually work.
Better Customer Experience
Custom templates mean your order emails match your brand. Customers feel cared for, not like they're reading a generic notification.
Data-Driven Decisions
Stop guessing. Real data on what resonates with your customers. Built-in analytics dashboard shows you exactly what's working.
Zero Code Required
WordPress admin interface. No developers, no third-party platforms, no monthly SaaS bills. Everything you need in one plugin.
Email Performance Over 30 Days
28.4%
Avg Open Rate
+18.2%
Improvement
Part of the WPBundle Suite
Email Optimiser is included free
as part of the WPBundle Lifetime Bundle
What You Get
13
WooCommerce Plugins
$149
Once, Forever
∞
No Subscription
- 13 WooCommerce plugins (growing)
- Every future plugin included
- Up to 5 site licences
- All updates, forever
- Priority support
- No subscription. Ever.
30-day money-back guarantee · No credit card required
Frequently Asked Questions
Everything you need to know about Email Optimiser