1. Fridja Presold 25% of Initial Stock Using Email

Ben Fridja, founder of appliances e-commerce store Fridja, used email preorders to presell 25% of his initial stock before launch day.
Key strategies:

• Opened preorders a month early
• Promoted the offer in multiple newsletters
• Offered a preorder discount

Fridja built trust with consistent, personal email communication, resulting in high engagement and strong sales momentum.

2. KC Tool Generates Sales with an Automated Daily Deals Newsletter

Collin Thomas, marketing manager at KC Tool, uses MailerLite’s RSS-to-email feature for an automated “Tool of the Day” newsletter.
Results:

• 72% open rate, 7% click rate
• Regular sellouts of featured products

He also uses A/B testing and post-sale automations for targeted follow-ups.

3. Pathpages Uses Behavior-Based Automation to Turn New Subscribers into Customers

Modest Mitkus of Pathpages converts new subscribers into paying customers using smart, behavior-based automations.
Workflow:

• Free lead magnets attract new signups
• Automation sends emails based on user interests
• Clicked links trigger topic-specific follow-ups

This increases engagement and conversion with minimal manual effort.

4. Buildcamp Sells Out a Bootcamp in 6 Hours (Plus Generates a 5x Waitlist)

Gregory John, founder of Buildcamp, sold out his AI bootcamp in 6 hours using a targeted email list he nurtured with valuable content and design-driven newsletters.
Tips:

• Weekly newsletter promotions with clear CTAs
• Dynamic content blocks tailored to segmented audiences
• API-driven triggers and transactional emails through MailerSend

5. Partnero Increases Open Rates with Subject Line and Send Time Optimization

Nicole Lee at Partnero boosted open rates from 37% to 47% using A/B testing and send-time optimization.
Key takeaways:

• A/B tested subject lines and improved click-throughs
• Send times adjusted based on time zones
• Revamped welcome sequences based on analytics

These changes significantly increased engagement and effectiveness.

6. Biovie Boosts Open Rates by 45% with a One-Click Feature

Biovie’s Eric Viard uses MailerLite’s auto-resend feature to increase open rates and drive sales for limited-time product offers.
Tactics:

• Auto-resend to unopened subscribers
• Timed delays between sends
• Packed newsletters with exclusive offers, event tickets, and recipes

90% of sales for short-term deals come through email—recently selling 5 tons of mangos.

7. Privyr Switched Email Providers and Saw a Big Open Rate Boost

Privyr switched to MailerLite due to poor deliverability and saw open rates increase by 15–20%.
Impact:

• Higher deliverability led to more engagement and conversions
• Multiple teams (marketing, customer support, performance) now launch faster, self-managed campaigns

This switch empowered the entire organization to leverage email marketing more effectively.

Conclusion

These case studies show that email marketing can drive real results—from higher open rates to direct product sales. Whether you’re a solo creator or a growing e-commerce business, the right strategy and tools can help you reach your audience and convert them into customers.