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SerpHike
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Growth Marketing
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Turn a Quiet Inbox Into a Steady Stream of Repeat Sales

Welcome, abandoned-cart and post-purchase flows measured against revenue per email, not open rate. Part of the automation stack behind PW.live's 41% retention gain.

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Email marketing at SerpHike prioritizes welcome, abandoned-cart and post-purchase flows first, the highest-return sequences for most accounts, measured against revenue per email sent, not open rate.

How SerpHike runs email marketing properly

01
List & Platform Audit
List health and platform setup checked first, so new flows aren\u2019t built on broken deliverability.
02
Highest-Return Flows First
Welcome, abandoned-cart and post-purchase built before any one-off campaign.
03
A/B Test Subject Lines & Timing
Every flow tested before scaling to the full list.
04
Revenue-per-Email Reporting
Measured against revenue per send and list health, not open rate alone.
Illustration of an automated customer journey with trigger, email, WhatsApp and sales handoff steps connected in a flow

What flows get built first?

FlowTrigger
Welcome seriesNew signup or subscription
Abandoned-cartCart or form left incomplete for 1+ hours
Post-purchase nurturePurchase or enrolment completed
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Evidence: retention driven by automated flows

41%
PW.live
Better 30-day retention, driven by lifecycle email and messaging flows.
View case study →

Most email programmes are one newsletter and a prayer

A monthly newsletter is not an email strategy. The revenue in email comes from automated flows triggered by what people do: signing up, browsing, abandoning a cart, buying, going quiet. Those flows run every day without anyone pressing send, and they usually make more money than every campaign combined.

Deliverability rules tightened in 2024

From February 2024, Gmail and Yahoo required anyone sending around 5,000 or more emails a day to authenticate with SPF, DKIM and DMARC, offer one-click unsubscribe and keep spam complaint rates under 0.3% (Resend on Gmail and Yahoo sender rules). Many brands saw inbox placement drop without realising why. We check authentication, list hygiene and complaint rates before we write a single email.

Why open rates stopped meaning much

Apple's Mail Privacy Protection, launched in September 2021, preloads email content, including tracking pixels, whether or not the person reads the message (Litmus on Apple Mail Privacy Protection). Apple Mail accounted for close to half of all opens at the time, so open rates became inflated and unreliable. We report clicks, conversions and revenue per recipient instead. Our article on why open rates mislead explains the detail.

The flows we build first

  • Welcome: introduce the brand, set expectations and make a first offer
  • Browse and cart abandonment: timely reminders with the product they looked at
  • Post-purchase: order updates, how-to content, review requests and cross-sells
  • Replenishment: reminders timed to when customers actually run out
  • Win-back: a reason to return for customers who have gone quiet
Public evidence

Checkout abandonment is common and recoverable. Baymard Institute puts the average documented cart abandonment rate at 70.22% (Baymard Institute). A well-timed reminder recovers a share of those orders at almost no cost.

From our client work

Our automation work contributed to PW.live's 41% better 30-day retention.

How we measure it

Revenue per recipient, flow revenue as a share of total, conversion rate by flow, list growth and complaint and unsubscribe rates. See the three email flows every business needs.

FAQ

What flows are typically built first?
Welcome series, abandoned-cart/abandoned-signup, and post-purchase or post-enrolment nurture, the three highest-return flows for most accounts.
Which platforms does SerpHike work with?
Klaviyo, Mailchimp and HubSpot most commonly, matched to the client’s existing stack.
How is email success measured?
Against revenue per email sent and list-health metrics (deliverability, unsubscribe rate), not open rate alone.
Does this include SMS and WhatsApp too?
Email is the core channel here; multi-channel sequencing across SMS and WhatsApp is scoped under Marketing Automation.
How is list health protected?
Sunset policies for unengaged subscribers and deliverability monitoring are built into every flow to protect sender reputation.
How often should we email our list?
As often as you have something useful to say. For most brands that is weekly campaigns plus automated flows. Watch unsubscribes and complaints as your guide.
Should we buy email lists?
No. Bought lists damage deliverability, breach privacy law in the UK, EU and many other markets, and rarely convert.
Published Mar 10, 2025 · Last updated Sep 30, 2026

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