Why Email Marketing Still Delivers the Highest ROI in 2025

Every few years, someone declares email marketing dead. Every few years, they're wrong. In 2025, email remains the single highest-ROI marketing channel — and for businesses that know how to use it, it's a machine that runs on autopilot.

The Numbers Don't Lie

Email marketing averages a $42 return for every $1 spent — a 4,200% ROI. Compare that to social media advertising (average 2–4× ROAS) or SEO (hard to attribute directly). No other channel comes close for direct, measurable return.

Why? Because email is the one channel where you own the audience. Social platforms change algorithms, reduce reach, and can suspend accounts. Your email list is yours — no platform can take it away.

The 3 Types of Email Campaigns You Need

1. Welcome & Nurture Sequences (Automated)

The moment someone joins your list, a pre-written sequence begins. This is your chance to make a great first impression, deliver value, and build trust before asking for anything. A good welcome sequence runs 5–7 emails over 2 weeks and introduces your story, your methodology, and your results.

2. Broadcast Campaigns (Regular)

These are one-off emails sent to your whole list — or segments of it. Use broadcasts for promotions, announcements, new blog posts, case studies, or industry insights. Send at minimum twice a month, ideally weekly.

3. Re-engagement Campaigns (Automated)

Subscribers who haven't opened in 90+ days need a specific campaign to either re-engage them or clean them from your list. Sending to dead subscribers tanks your deliverability. A 3-email re-engagement sequence with a clear final call ("stay or leave?") keeps your list healthy.

What Makes an Email Actually Get Opened

With average open rates around 20–25%, getting your email opened is step one. The subject line is everything:

• Curiosity: "The mistake costing you 40% of your leads"
• Specificity: "How we booked 47 meetings in 30 days for a B2B client"
• Personalisation: Using the subscriber's name or company
• Urgency: Time-limited offers or deadlines

Avoid spam trigger words (free, guarantee, no risk), all caps, and excessive punctuation. Test 2 subject lines against each other — even 5% better open rates compound significantly over time.

SMS Marketing: Email's High-Powered Sibling

SMS has a 98% open rate vs email's 20–25%. It's not a replacement — it's a complement. Use SMS for time-sensitive messages: appointment reminders, flash offers, follow-up after no email response. Keep messages short, human, and include a clear link or reply instruction.

Combined email + SMS sequences consistently outperform either channel alone by 30–50% in our client results.

Deliverability: The Hidden Factor

You can write the perfect email and it means nothing if it lands in spam. Deliverability depends on:

• Proper domain authentication (SPF, DKIM, DMARC records)
• Maintaining a clean list (remove bounces and unengaged contacts regularly)
• Consistent sending frequency — don't disappear for months then blast the list
• Engagement signals — the more people open and click, the more Gmail trusts you
• Warming up new sending domains gradually

How We Set Up Email & SMS at Like IT Global

We build all email and SMS infrastructure inside Go High Level. It handles list management, automation workflows, A/B testing, analytics, and integrates directly with your CRM and funnel. We write the sequences, set up the automations, and optimise based on open and click data.

"Email is not just a marketing channel — it's a relationship channel. The businesses that treat it that way see the highest returns."