Sagar KC’s Glossary of Must-Know Email Marketing Terms in 2025

Email marketing is full of strange words.

If you’re new, it’s easy to get lost. If you’re not new, some terms have changed. This is my list of email terms every marketer should know in 2025.

1. Open Rate

This shows how many people opened your email. It’s not always accurate anymore because of privacy updates.

Use it as a guide, not as the truth.

2. Click Rate

This tells you how many people clicked a link in your email. This is more reliable than open rate.

Always track this.

3. CTR (Click Through Rate)

This is the percent of people who clicked, out of those who opened. It helps you see if your email was interesting.

Good CTR means your content worked.

4. A/B Testing

This means sending two versions of something to see what works better. It could be a subject line, a button, or the whole email.

Test only one thing at a time.

5. Automation

This is when emails send on their own, based on triggers. Like welcome emails after someone signs up.

Helpful if done right. Annoying if overused.

6. Segmentation

This is the act of splitting your list into groups. You can group by location, age, behavior, or what they clicked.

The goal is to send people what they care about.

7. Personalization

Adding the reader’s name or using what you know about them. Good personalization feels real. Bad personalization feels creepy or fake.

Use wisely.

8. Deliverability

This means if your email reached the inbox or got stuck in spam. Many emails never make it.

Clean your list and avoid spammy words.

9. Bounce Rate

This is when emails don’t deliver. Hard bounces are bad addresses. Soft bounces are short-term issues.

Too many bounces hurt your sender score.

10. Unsubscribe Rate

How many people leave your list after an email. If this is high, your emails may be too frequent, too boring, or too off-topic.

Learn from it.

11. Welcome Flow

A set of emails new subscribers get. It’s your first chance to connect. Don’t waste it.

Say thanks. Give value. Keep it short.

12. Abandoned Cart Email

An email sent when someone adds to cart but doesn’t buy. These can bring in big revenue.

Make it simple. Remind them. Offer help.

13. Re-engagement Campaign

A message to people who stopped opening your emails. It asks, “Still interested?”

If they don’t reply, it’s okay to remove them.

14. Spam Trigger Words

Words that get your email flagged. These include “Buy now,” “Free,” “Limited time,” or using too many emojis.

Write like a human, not a sales robot.

15. Plain Text Email

No images, no fancy design. Just words. These feel more personal and are easier to deliver.

Sometimes, plain wins.

Email is not just about tools. It’s about how you speak to people. Knowing the right terms helps you work better and sound smarter.

But remember, clear writing wins over fancy words.

Read more at Sagarkc.com

[image error]