The Unsexy Truth About Marketing ROI
Every year, marketers get excited about the newest platform. TikTok, Threads, BeReal, whatever comes next. And every year, the same marketing channel quietly delivers the highest ROI of any digital channel while being almost completely ignored by the businesses chasing novelty.
Email marketing. The "boring" channel that has been around since the 1970s consistently delivers an average return of $42 for every $1 spent — according to the Data & Marketing Association. For context, social media advertising averages $2.80 per $1 spent.
The reason email works so well is simple: it reaches people you have explicit permission to contact, who have already demonstrated interest in your business, in a private and personal context. You are not competing with 200 other posts in an algorithm-controlled feed. You are in their inbox, which they still check an average of 15 times per day.
The Three Types of Email That Drive Revenue
Effective email marketing is not about sending one newsletter to your whole list occasionally. It's about the right message to the right person at the right time. There are three categories of email that drive most of the revenue:
1. Automated Welcome Sequences
The moment someone subscribes to your list, joins your programme, or makes a first purchase, they are at peak engagement with your brand. This is the best possible time to send them a series of emails that educate them about your business, demonstrate your value, and guide them toward their next purchase or deeper engagement.
A typical NZ service business welcome sequence might be 4–6 emails over 14 days: a warm welcome, your story and why you do what you do, your most popular service and what makes it different, a customer success story, an FAQ, and a specific offer or consultation invitation. Welcome sequences typically generate 3–5× the open rates of regular broadcast emails.
2. Behavioural Trigger Emails
These are emails sent based on specific actions a customer takes (or doesn't take). The most famous example is the abandoned cart email — sent when someone adds a product to their cart but doesn't purchase. For e-commerce businesses, these recover 15–25% of abandoned carts that would otherwise be lost revenue.
Other powerful trigger emails include: post-purchase follow-ups requesting reviews, re-engagement emails to customers who haven't visited in 90 days, milestone emails (first anniversary as a customer), and upsell emails sent at the right point in the customer journey.
3. Regular Value-Driven Newsletters
A consistent newsletter sent weekly or fortnightly keeps your brand top of mind, builds trust over time, and drives recurring revenue from your existing customer base. The key word is "value-driven" — your newsletter should give readers something genuinely useful, not just promotional content.
Building Your Email List the Right Way
Email marketing only works if you have a quality list. Here are the most effective list-building strategies for NZ businesses:
- Lead magnets: Offer something genuinely valuable in exchange for an email address — a guide, a checklist, a discount, a free assessment
- Website opt-in forms: Place these strategically — exit intent popups, embedded forms in high-traffic content, sticky header/footer bars
- Post-purchase capture: Every customer who buys from you should be invited to join your list for future offers and updates
- In-person collection: At events, in your physical store, or during service delivery
- Social media promotion: Drive social followers to your email list — you own the list, you don't own your social following
Segmentation: The Multiplier
Sending the same email to everyone on your list is leaving money on the table. Segmented email campaigns generate 14% higher open rates and 100% higher click rates than non-segmented campaigns.
For most NZ businesses, start with these simple segments: new customers (first 90 days), active customers (purchased in last 12 months), lapsed customers (no purchase in 12+ months), and interests/service type segments. Even basic segmentation dramatically improves results.
The businesses winning with email marketing in NZ are not doing anything complicated. They are building their lists consistently, automating the core sequences, sending value-driven newsletters on a schedule, and segmenting as their list grows. Start with those foundations and email will become your most reliable and profitable marketing channel.