Email and retention marketing agency.

An email and retention marketing agency focuses on getting existing customers to buy again, using lifecycle email rather than constant promotion. Inferno Emails plans the retention programme, builds the Klaviyo flows behind it and reports on repeat purchase, not only opens and clicks.

What retention marketing is for.

Acquisition brings a customer in once. Retention is everything that makes a second and third order likely: a good first experience, helpful follow-up, a timely reminder and a reason to come back.

Email is the main retention channel for most online stores because it reaches a customer you already know, at a moment you can choose, at little cost per message.

The flows that carry retention.

Post-purchase sequences set expectations and teach the customer how to get the most from what they bought. Replenishment reminders arrive when a product is likely to run out. Cross-sell emails suggest what goes with the original order.

Winback flows reach customers who have gone quiet, and a sunset policy removes the ones who never return so they stop harming deliverability.

Segmenting by value and behaviour.

Not every customer deserves the same treatment. We separate first-time buyers, repeat customers, high-value customers and lapsed ones, then change the messages and the frequency for each group.

Your best customers can hear from you more often and earlier, while a lapsed customer needs a gentler, different approach.

Measuring retention honestly.

We track repeat purchase rate, time between orders and revenue per recipient alongside flow revenue. The aim is a programme that visibly improves the shape of your customer base over time, not just the top line of a monthly report.

Retention results arrive over a buying cycle, so we agree up front what a fair first read looks like, and we explain it in plain words.

Questions to ask any agency.

Who it suits.

  • Brands with good acquisition but low repeat purchase
  • Stores selling products that are reordered or collected over time

Who should look elsewhere.

  • Brands looking for new-customer acquisition from an email agency
  • One-off purchase products with no reason to return

Questions people ask.

What is retention marketing?

Marketing aimed at existing customers so they buy again, using lifecycle email, loyalty and timely follow-up rather than only paid acquisition.

Why use email for retention?

Because you own the list, can time messages to behaviour and reach a customer at low cost. It is usually the highest-return retention channel for online stores.

How is retention measured?

Repeat purchase rate, time between orders, customer lifetime value and revenue per recipient, read over a full buying cycle.

Inferno Emails is an agency, so we have an interest in you hiring one. This page is written to help you choose well, including choosing someone else or doing the work yourself.

Want a straight answer on your own account? Our free audit lists what is missing and what to fix first, with no obligation. See the retention strategy service or book your free audit.

Find out what your list is actually worth.

We review your flows, list health, authentication records and last ninety days of performance, then send back what we found.

30 minutes, no obligation, and the findings are yours to keep either way.