10 Best Practices in Email Marketing to Skyrocket Engagement

Subscriber opening marketing email on laptop

“Email marketing” is often called the backbone of digital marketing. But simply sending messages isn’t enough; to win, you need higher engagement. Today, I’ll share best practices, real-world insights, and things you rarely read. 

Why Engagement Matters More Than Volume

You can blast thousands of emails, but if no one opens or acts, what’s the point? Engagement is the bridge between inbox and impact. High open rates, meaningful clicks, and replies mean your message is resonating.

  • According to Campaign Monitor, the average email conversion (across channels) is ~4.24 %, higher than many paid channels.
  • In e-commerce, many brands see $45 return for every $1 spent via email marketing. 

So the goal is not just to expand the reach, it’s to make people care, click, and act.

Marketer working on email marketing dashboard

1. Build Trust from Day One: Welcome & Onboarding Flows

The first emails you send set the tone. A well-crafted welcome series often yields open rates 2–3× higher than regular campaigns.

Best practice tips:

  • Send the first email almost instantly after sign-up.
  • Use a friendly, human tone (no jargon).
  • Introduce your brand story, who you are, and why you exist.
  • Then nurture: follow up with valuable content (tips, resources), not just offers.

Case in point: Fridja, an e-commerce brand, used pre-orders via email in their onboarding cadence and sold 25% of their stock in advance. 

2. Segment Deeply, Speak Specifically

One-size-fits-all is the fastest path to the spam folder. Instead:

  • Segment by demographics, behavior, purchase history, or engagement level.
  • Use dynamic content blocks so each subscriber sees what’s relevant.
  • Re-evaluate segments periodically (people’s interests evolve).

Allakando, a tutoring brand, created eight segments and ten custom fields enabling targeted campaigns across teachers, parents, and students. 

3. Personalization + Behavioral Triggers

People open emails when they feel addressed, not mass-targeted.

  • Use the subscriber’s name, but more importantly, reference their behavior (e.g., “You viewed Product X, here’s a tip”).
  • Trigger-based emails (cart abandonment, product views, inactivity) outperform regular campaigns.

For instance, adopting automation and A/B testing pushed MobileFun to double its conversions from cart recovery campaigns. 

4. Craft Subject Lines That Appeal to Curiosity & Emotion

Your subject line is your gateway. A great one can double open.

  • Use curiosity (“Don’t miss this inside tip”) or urgency (“Just 2 hours left”) but sparingly.
  • A/B test subject lines. Partnero improved their open rate by 10 % using subject & send-time optimization.
  • Keep subject length ~40–60 characters (so it shows fully in mobile previews).

5. Optimize Send Times with Smart Data

Timing matters. An email may sit unread if it arrives when subscribers are offline.

  • Use send-time optimization algorithms or test send times manually.
  • Research (An RNN-Survival model) shows that email open times follow patterns, and you can predict the best moments to send.
  • Also consider time zones and day-of-week habits.

6. Use Interactive & Rich Content

Static text is aging. Interactive content (polls, surveys, embedded forms) can boost engagement.

  • Mailmodo clients saw 4× email engagement using in-email quizzes, forms, etc.
  • Video-in-email is gaining traction as well. Embed a thumbnail + play button to entice clicks without heavy attachments.

But keep it mobile-friendly and test deliverability.

7. Clean Your List & Manage Deliverability

A cluttered list with unengaged users drags down the performance.

  • Remove or suppress subscribers who haven’t engaged in 6–12 months.
  • Use double opt-in when possible to ensure valid addresses.
  • Monitor bounce rates, spam complaints, and sender reputation.

Klaviyo’s benchmarks show top-performing campaigns (top 10 %) convert 5× more than average, but that’s only possible when list hygiene is strong.

8. Test, Measure, Iterate

What works today might not work tomorrow. Email marketing demands constant refinement.

  • Use A/B tests (subject line, CTA, layout), test one variable at a time.
  • Monitor metrics: open rate, click-through rate (CTR), click-to-open (CTOR), conversion rates.
  • Track subscriber behavior post-click to see if your landing page or offer is weak.

9. Human Touch & Storytelling

People don’t buy from brands, they buy from people. Here’s where you differentiate.

  • Share client stories, case studies, or behind-the-scenes glimpses.
  • Use a conversational tone, just like in this blog. Aqva Marketing always emphasizes that marketing is human-first.
  • Encourage two-way engagement: solicit replies, feedback, surveys.

10. Use Automation Strategically

Automation saves time, but misuse can feel robotic.

  • Use drip sequences thoughtfully (e.g., welcome flows, post-purchase, re-engagement).
  • Don’t over-automate promos. Keep human review on key emails.
  • Trigger follow-ups only based on real behavior (did they click? did they read?).

Example Flow: A Re-Engagement Campaign

  1. Email A (friendly check-in): “Hey, we haven’t heard from you” + a value article.
  2. Email B (7 days later): “Did you miss this?” + best-of content.
  3. Email C (if no response): “We’re sorry to see you go — here’s a special offer”

This flow is gentle, respectful, and often reactivates dormant users.

Real-World Case Highlight

TechSoup Polska saw a 1200 % increase in order value via email campaigns using segmentation and automation.

Or take “KC Tool”: they automated a “Tool of the Day” newsletter, achieving open rates of 72 % and click rates of 7 %. 

These aren’t fairy tales; with smart strategy, engagement can soar.

Bringing This Into Aqva Marketing’s World

At Aqva Marketing, we believe in blending data and empathy. When we run your email campaigns, we don’t treat subscribers like numbers; we see them as humans. We will:

  • Help you build an emotionally resonant welcome series, not just promo blasts.
  • Segment your list so each person feels understood.
  • Test relentlessly and show you the insights (not just the dashboards).
  • Amplify your core voice, always.

If you partner with us, your email marketing won’t be just “another channel”; it becomes a way to nurture real relationships.

In Summary

To make email marketing truly effective, don’t chase volume, chase connection.

  • Begin with trust via onboarding.
  • Segment deeply, personalize wisely.
  • Use subject lines that spark curiosity.
  • Send at the right times.
  • Inject interactive content.
  • Clean your list.
  • Test, iterate, and humanize.

Do these well, and your emails will leap from “just another message” to something people look forward to.

Let Aqva Marketing be your partner on that journey, helping you engage, convert, and delight.