Every channel
Email, SMS, WhatsApp, web push, on-site. One drag-and-drop editor, one segment builder, one analytics view.
MarketingEvery channel,
Every channel,
one customer ledger.
Stop paying Klaviyo, Postscript, OneSignal, and a CDP. Mercentia ships email, SMS, WhatsApp, push, and on-site campaigns on the same customer ledger that powers your store. Segments are live, A/B tests are baked in, attribution is unified back to the order — not modelled.
Spring launch — Ember Roastery
Sending now E
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Audience
VIP customers12,482
Lapsed buyers3,108
+ 4 more segments
Performance
42.1%
Open rate
8.6%
Click rate
£28k
Revenue
Live segments
No nightly batch. Add to segment the moment a buyer crosses the threshold. Real-time, real fast.
A/B everything
Subject, copy, send time, image, offer. Statistical significance gating built in.
How it works
From signed up to shipping in minutes.
- 01
Build a segment
Bought in last 30 days but not opened the email — drag attributes and behaviour into the segment builder.
- 02
Pick channels
Email + WhatsApp follow-up if not opened, SMS finally. Each channel is a node in the flow.
- 03
A/B and ship
Auto-pause losers. Promote the winner. Attribution closes the loop back to the order.
In the box
Everything you'd expect, nothing you'd have to bolt on.
- Email at scale via Postmark, Resend, Mailgun, or your SMTP
- SMS via Twilio, MessageBird, Postscript-replacement built in
- WhatsApp via Meta Business API (Mercentia handles approval)
- Web push with VAPID keys, no third-party
- On-site campaigns: pop-ups, sticky bars, exit-intent
- Live segments — no batch lag
- Flow builder with delay, branch, A/B nodes
- A/B testing with stat-significance gating
- Multi-variant tests (3+ arms) with bandit allocation
- Predictive send-time per recipient
- Attribution back to the order (no last-click guessing)
- GA4 + Google Ads conversion tracking — paste one ID, no developer
- Server-rendered Google tag — verifiable in page source, no “tag not detected”
- Enhanced Conversions (hashed) + server-side purchase events for full match rates
- Server-side conversions to Meta CAPI + TikTok Events, fired from the edge
- Deduplicated against the browser pixel by order ID; PII SHA-256 hashed before it leaves
- Consent Mode v2 wired to the cookie banner (EU/UK ad traffic compliant)
- GDPR-grade consent ledger, double opt-in, suppression list
Stop paying four marketing taxes.
One platform, every channel, one customer ledger. The Klaviyo + Postscript + OneSignal stack is now one line item: zero.