Email remains the highest-ROI marketing channel available. But the tactics that worked five years ago — broad blasts to unsegmented lists, generic subject lines, one-size-fits-all content — are actively hurting performance today. Here are the practices that actually drive results in 2025.
Segmentation: The Foundation of Effective Email
Sending the same email to your entire list is leaving money on the table. Segmented email campaigns generate 760% more revenue than non-segmented campaigns. At minimum, segment by: customer vs. prospect, industry or use case, engagement level (active vs. inactive), purchase history, and content preferences. Start with two or three segments and expand as your data matures. Our email marketing services build segmentation from day one.
Automation Over Broadcast
Automated sequences triggered by behavior consistently outperform scheduled broadcast emails. Priority sequences every business should have: a welcome series (sent when someone joins your list), a lead nurturing sequence (for prospects who haven’t purchased), a post-purchase sequence (onboarding and satisfaction), and a re-engagement sequence (for inactive subscribers). See our automation services.
Deliverability: Getting Into the Inbox
Your email is worthless if it lands in spam. Protect deliverability by: authenticating your sending domain (SPF, DKIM, DMARC), maintaining list hygiene (removing bounces and inactive subscribers), warming up new sending domains gradually, avoiding spam-trigger words and excessive promotional language, and monitoring your sender reputation with tools like Google Postmaster and MXToolbox.
Subject Lines That Get Opened
The subject line determines whether your email gets opened or ignored. What actually works in 2025: curiosity gaps (“The thing most businesses get wrong about…”), specific numbers and data (“47% of your visitors are leaving for this reason”), personalization with context (not just first name), clear value statements, and — counterintuitively — short subject lines under 40 characters that display fully on mobile. Test subject lines systematically; a 5% improvement in open rate compounds significantly over thousands of sends.
Need a high-performing email program? See our email marketing services.
Frequently asked questions
How much more revenue do segmented email campaigns generate?
760% more revenue than non-segmented campaigns. At minimum, segment by customer vs. prospect, industry or use case, engagement level, and purchase history.
What automated email sequences should every business have?
A welcome series, a lead nurturing sequence for prospects who haven’t purchased, a post-purchase onboarding sequence, and a re-engagement sequence for inactive subscribers — automated, behavior-triggered sequences consistently outperform scheduled broadcast emails.
What protects email deliverability?
Authenticating your sending domain with SPF, DKIM, and DMARC, maintaining list hygiene by removing bounces and inactive subscribers, warming up new sending domains gradually, and monitoring sender reputation with tools like Google Postmaster.
Email Marketing Best Practices for 2025. DigiJaws, 2026. https://digijaws.com/reviews/email-marketing-best-practices/