Following these 10 fundamental rules turns a simple newsletter into a real growth engine. Here is the must-have summary of high-performing email marketing.
1. Always ask for permission
Double opt-in is the foundation: no spam, no complaints, a qualified list.
2. Segment your contacts
A targeted campaign outperforms a generic one by 50% on average.
3. Craft the subject line
30-50 characters, curiosity, relevance — no ALL CAPS, no spam words.
4. Think mobile-first
More than 60% of emails are opened on mobile. Use a responsive template.
5. One primary CTA
One message = one action. The button must be visible and thumb-friendly.
6. Personalise the content
First name, city, past behaviour — personalisation lifts click-through.
7. Test before you send
A/B test subject, visuals, CTAs. Send a test to a colleague before launch.
8. Respect GDPR compliance
Unsubscribe link, legal notice, traceable consent — Mailpro handles all of this automatically.
9. Monitor your KPIs
Opens, clicks, unsubscribes, spam complaints — your steering dashboard.
10. Clean your lists
Hard bounces and inactives hurt deliverability. Clean every 3 months and avoid the email blacklist.
Read more: what is email marketing and email deliverability fundamentals.