Email remains one of the most direct and powerful lines to your target audience. Data from Litmus shows that some companies see ROIs as high as 36:1 with email marketing.
These crazy ROIs are nothing new. Email has consistently led the pack of digital marketing tactics, and the secret has been out for more than a decade.
The result?
Inboxes are crowded. Like, insanely crowded. Some reports say the average person gets around 121 emails per day. In other words, the noise is real – and it’s getting louder.
A well-written email can cut through all this noise and help you hit that lofty 36:1 ROI goal.
The right approach builds trust, sparks action, and generates lasting value. But unfortunately, many business emails never get read — or worse, end up leaving the wrong impression.
This means every word must count. If you need business results now, mastering every layer — from the way you greet to the moment you say goodbye — sets you apart. In this post, we’ll explain the clear steps for telling your story, driving engagement, and earning a seat in your reader’s crowded inbox – even in the age of AI writing tools.
TL;DR – Email Copywriting Best Practices
- Subject lines matter most: Keep them clear, relevant, and value-driven. Avoid clickbait/all caps. Personalization and urgency improve open rates.
- Personalized greetings: Use the recipient’s name whenever possible. Keep it casual and human, avoid “Dear Valued Customer.”
- Get to the point quickly: Skip fluffy openers, state purpose clearly, and respect the reader’s time.
- Tone and voice: Match your brand style—professional warmth works best. Avoid stiff or overly casual/slang-heavy language.
- Formatting for readability: Short paragraphs, line breaks, bullet lists. Minimal visuals. Make CTAs stand out.
- Strong CTAs: Use active language and keep it simple. One clear action per email boosts results.
- Confident sign-offs: Choose closings that fit the relationship. Always include your name, role, and contact info.
- Avoid common mistakes: Test for mobile, trim excess info, and proofread thoroughly.
- Tools help scale: Use personalization engines, readability checkers, template libraries, A/B testing, and mobile previews.
- AI is a support, not a solution: Helpful for drafts and proofreading, but strategy and human insight drive results.
Email Subject Line Copy
Your email subject line is your first impression and determines whether your email gets opened or ignored. It should be clear, concise, and relevant to the recipient. A general rule we live by when we write email subject lines is that they should leave no mystery about what the email is about.
Avoid clickbait or all-caps; these are email copywriter sins that land your marketing email in spam. Focus on value and curiosity. Personalization, urgency, or a direct benefit can boost open rates. Test different subject lines to see what resonates with your audience.
Here are some examples:
- Project Update: Next Steps & Timeline (Ideal for client updates or ongoing project communications)
- [First Name], Get Exclusive Resources for Your Team (Great for newsletter campaigns or value offers for email subscribers)
- Quick Question About Your Marketing Strategy (Best for cold outreach, landing page, promote a blog post, show customer testimonials, or initial consultation emails)
- Invitation: Join Our Upcoming Webinar (For event invitations or educational campaign emails)
- Action Needed: Confirm Your Preferences (Useful for compliance, account updates, or preference confirmation emails)
Structuring the Email Body: Delivering Value With Intent
Both the subject line and lead in are only half the battle in effective email marketing campaigns. To give you an idea, data from Smart Insights shows that the average open rate across all industries is 36.5 percent, but average click-through rates sit at 1.4 percent.
What’s the takeaway here?
Past the greeting, your time is short. Attention is a precious mineral; clients and leads skim for value. The body of your email should answer, “Why should I care?” with every line.
Choosing the Right Greeting for Your Marketing Email
Let’s move into the actual email.
A formal “Dear [Name]” may sound a little to spammy, especially when contacting people for the first time. Keep it casual and make it seem like the message is coming from a real person.
But for ongoing client relationships or newsletter audiences, a simple “Hey [Name],” or even “Hello” keeps it human and builds rapport.
Always use the recipient’s name when possible. No “Dear Valued Customer”.
Personalization is key to boosting open rates and reinforces that your message isn’t mass-produced. For larger campaigns, email marketing automation tools like Mailchimp and Campaign Monitor allow for more dynamic personalization. Use these tools to auto-insert names while also double-checking your list for errors. Nothing kills trust like a misspelled name.
If the recipient’s name isn’t available, default to a respectful yet friendly tone. “Hello,” “Hi there,” or for groups, “Team [Company]” works. Avoid “To whom it may concern” — it signals you didn’t do your homework.
Getting to the Point
The first line after the greeting should clarify your purpose. If you’re writing a cold outreach or campaign offer, be specific: “I’m reaching out to share a new solution that can help reduce your spend on…” If you’re updating a client, highlight the most relevant info first: “Here’s a project update with next steps and a timeline.”
Clarity always wins with email. Avoid fluffy lead-ins (“I hope this email finds you well”). These add nothing and take up attention. Instead, tighten up to respect your reader’s time.
Tone Matters: Reflecting Your Brand in an Email Campaign
Match your tone to the relationship and your brand’s style. Businesses and agencies with a bold, direct brand voice should maintain that confidence; brands that are more consultative should keep language supportive but clear. Always aim for professional warmth. Be approachable, but don’t let things drift into casual or slang-heavy.
Examples of tone in an email copy:
- Bold/direct: “Let’s get straight to the best solution for your team.”
- Consultative/supportive: “We’re here to help you find the right fit for your needs.”
- Formal: “We appreciate your consideration and look forward to your response.”
- Friendly but professional: “Just checking in to see how things are going on your end.”
- Too casual/slang-heavy (to avoid): “Hey, just wanted to give you a quick heads up!”
Try reading the draft out loud. If it sounds stiff or robotic, rework it. The message should feel like a real person wrote it.
Formatting for Readability
Short paragraphs, line breaks, and bullet lists all help. Recipients expect to skim — so chunk information as best you can. Use visuals sparingly; in most business cases, a graphic isn’t needed unless it serves a real function (e.g., a project timeline or chart).
If the call to action (CTA) requires a response, make it clear and easy to spot. Place it on a line by itself: “Let me know if next Tuesday works for your team.”
Avoid burying your CTA in the middle of a long block of text. Readers should know at a glance what to do next.
Key Takeaways for Readability:
- Keep paragraphs short and use line breaks
- Organize information with bullet points or numbered lists
- Limit visuals to only those that add value
- Make CTAs highly visible and easy to find
- Test your email’s appearance on different devices for clarity
Calls to Action: Empowering the Reader
The best email is actionable.
Without a clear CTA, even the best-written content falls short. A study from Campaign Monitor showed emails with a single, focused CTA can increase click-through rates by more than 370%. Simplicity drives results.
Types of CTAs
For agencies and businesses, typical CTAs might include:
- Reply to schedule a call
- Click a link to review a resource
- Download a whitepaper
- Forward the email to another stakeholder
Always use active language. “Download the latest guide here,” outperforms “You can download the guide if you’d like.” The reader should know both what you want them to do, and why it matters for them.
Test your CTA placement and formatting. Tools like Litmus or Mailtrap can preview how your message looks on different devices. Make sure links are clear, buttons work, and nothing gets lost if someone is reading on a phone.
Closing with Confidence: The Art of the Sign-Off
The way you end the email message is more than a formality. It shapes the final impression and impacts if you get a reply or further engagement.
“Best regards,” “Thank you,” and “Sincerely” are safest for business settings, but can come off as stiff if you have a closer relationship. “Best,” “Thanks,” or even “Talk soon” can make your message feel open, warm, and intentional.
The sign-off should match your brand’s personality and the message’s tone. If you are requesting action, a closing line such as “Looking forward to your input” or “Please let me know what you decide” can encourage a timely response.
Always include your name, role, and contact information (at least on first contact or after a long gap). We recommend including a headshot in the sign-off as well. Email signatures with clear contact details reflect professionalism.
Mistakes That Can Cost Engagement
Even strong content fails if the basics are overlooked. Here are the most common errors that hurt open and reply rates —and how to avoid them:
Ignoring Optimization for Mobile Devices
More than half of business emails are now read on mobile devices. If your email is cluttered, has large images, or uses small fonts, there’s a good chance it will take a one-way trip to the recycling bin. Stick to responsive templates, keep paragraphs short, and always test mobile previews before sending.
Overloading with Information
Readers facing blocks of text or dense, jargon-filled paragraphs will skip or ignore your email. Focus on what matters — trim the rest. Provide links for follow-up details rather than stuffing everything into one message. Clarity makes your emails more accessible and inviting, especially for busy professionals who scan rather than read in depth.
Forgetting to Proof
Typos and wrong names are red flags. Use built-in proofreading features, but do not rely on them alone. Reading backward line by line can catch errors that auto-correct misses. A second set of human eyes or a text-to-voice feature – even for quick messages – can be the difference between a reply and a delete.
Email Copywriting Tips and Tools
- Personalization engines – Use email platforms like HubSpot or Campaign Monitor to scale personalized greetings and sign-offs without losing human touch.
- Readability checkers – Hemingway Editor or Grammarly help for concise, clear wording.
- Template libraries – Build a set of winning templates for common scenarios—cold outreach, client updates, renewals.
- A/B testing -Try different subject lines, greetings, and CTAs to see what resonates. Many email platforms provide built-in analytics and split test functions.
- Mobile preview tools – Tools such as Litmus or Email on Acid let you see how your message appears across devices before sending to your audience.
Test, measure, refine. The way digital agencies and ambitious businesses use email can make the difference between steady growth and wasted effort.
What About AI in Email Writing?
AI-powered tools can speed up the email writing process by generating drafts, suggesting subject lines, and catching grammar or spelling mistakes.
Proofreading features built into platforms like Grammarly or AI writing assistants can help teams maintain professionalism and consistency. However, AI is only as effective as the email marketing strategy guiding it. Without a clear understanding of your brand voice, how human beings react to emails, and goals, even the most advanced AI will produce generic or off-target content.
In other words, AI is not the silver bullet for successful email marketing campaigns. To get real value from AI, use it to support your strategy, not replace it. Human insight and intent remain the foundation of impactful email campaigns.
Need Help Getting Email Right?
Email copywriting isn’t just about getting past spam filters. It’s about showing respect for attention, getting straight to the value, and driving the next step, with no wasted words from the subject line to your signature.
Craft it with care, and your readers will know they’re in the hands of a pro. The next step is yours: review your own messages, apply these practices, and transform your email results one word at a time. At Razorcopy, our guiding ambition is to set higher standards: giving every client content that stands as the best online for their goals and target audience.
If you need help writing copy for your email marketing campaigns, the team at Razorcopy is here for you. We can work directly with your email service provider to deliver A-level content. Send us a message to learn more.
