150+ Best E-Commerce Email Subject Lines to Boost Sales in 2025

Catchy e-commerce email subject lines that drive clicks and sales

Writing truly attractive email subject lines that don’t fall into the bait and spam category is an art. That being said, you don’t have to reinvent the wheel, as there are tried and tested examples. We’ll categorize them and explore each in detail below, but here are some top picks:

As you can see, the idea is to give your clients a good reason to click, and then deliver the goods.

Why subject lines matter in e-commerce email marketing

Impact on open rates and sales

Great content might be hidden behind a subject line that fails to attract clicks. If you want to increase the chances of your email being read, it starts with the subject line. 

According to ZeroBounce’s email statistics report, 43% of email recipients open the message based exclusively on the subject line. As you can see, getting the subject line right goes a long way in driving open rates and sales up.

Buyer psychology behind subject lines

Subject lines can be used in tandem with buyer psychology to maximize results. 

To illustrate the point, e-commerce messages that advertise one-time offers or exclusive gifts tap into a concept that has been explored by buyer psychology: the fear of missing out (also known as FOMO). A subject line that reads “A special one-time offer for you” might compel clients to click on a message because they could regret not taking advantage of an easy opportunity.

Mobile, preview text and character limits

Most users are probably going to see your messages on their smartphones, simply because it’s more practical than powering up a laptop or sitting in front of a desktop. 

However, mobile devices usually show the first 30 to 50 characters of a subject line and the rest is cut. For example, I can read up to 39 characters on my Gmail (by the way, I’m on Android). The number also changes between email clients, meaning that Gmail displays things differently than, let’s say, Yahoo. You can find more data in our study of email subject lines. 

That being said, a good rule of thumb is to put the most essential part of the message in the first 33 characters. There’s a benefit, though: it teaches you to write shorter, straight-to-the-point lines that are likely to be more attractive.

Best practices for writing e-commerce email subject lines

Be clear, not clever

Give your readers a reason to click – a clear, specific reason. 

What we mean here by not being “clever” is simple: don’t write something cryptic or clickbait, thinking people will be compelled to open your message out of curiosity. Actually, you might just annoy them. For example, “we have a surprise for you” might be too vague, so go with “open for a special one-time …% off promo code” instead. 

Add a sense of urgency or scarcity

Without urgency, people might put things off, your emails included. 

What you should do is fight that procrastination by adding a sense of urgency, letting clients gently know your offer is not on the table forever. 

If it’s their birthday, let them know the exclusive gift you sent them is redeemable only for that specific day, for instance. That generates the FOMO we mentioned before, making it more likely for the message to be opened. 

Personalize with names or preferences

Use clients’ names and other data to make content more relevant to them – it will make them feel catered to, and well, everybody likes feeling important. 

You could use past purchases and previous interactions, for example. Generic subject lines might be even more likely to be considered as spam, whereas something with a client’s name has a higher chance of avoiding that.

Use power words and emojis wisely

Power words are a double-edged sword – don’t overdo it, don’t oversell and don’t use capital letters. Poor use of that aspect will trigger spam filters, make you sound unprofessional and cause a bad impression. 

Avoid things like “FREE”, “BUY NOW!” and capital letters, for example. If you need help with this, check our blog post on common spam words, and remember, it is impossible to avoid them – you just have to use them sparingly, with purpose, add some form of personalization, and make sure you have a good sender reputation, among other things.

Likewise, emojis can add a more personal, informal touch that certain people might enjoy, but make sure you understand the context and use the right emojis. 

A/B testing subject lines

Email subject lines aren’t one-size-fits-all — testing helps you discover what works best. You can test subject lines within the same segment and see what works better, make modifications, adapt and profit from it. 

Skipping testing is one of the biggest mistakes you could make. After all, if you have multiple chances to get it right, why use only one and call it day? 

Do this instead: develop a few variants, send them to a limited number of contacts within the same demographic or segment, check the results, adapt and then commit.

150+ best e-commerce email subject line examples

Welcome emails

FlavCity’s welcome email is a nice example of how to blend brand identity to effective email marketing – “Better choices start here” is a catchy line. It is also complimentary and likely to make clients feel better about themselves. Finally, it provides a 15% off promo code for a first order, to improve conversion rates. 

This is to say that you can tailor the subject line to your business, but here are some other nice, more universal examples:

Promotional/sale emails

Cart abandonment emails

Sometimes, people forget to finish a purchase, and that’s what abandoned cart emails are for. 

We like Nakery Beauty’s casual approach to the subject line: “Forgot something?” is a nice way to break the ice. The email then proceeds to show a picture and description of the product, plus a visible CTA button to encourage the client to buy it. 

Take a look at more subject line possibilities:

Product launches and new arrivals

Birthday & anniversary emails

In the above example, automation is the name of the game – clients enter their birth date and then get a gift on the day. The subject line, “Get a birthday reward on us”, is simple, effective and very, very clickable. Check more ideas:

Holiday & seasonal campaigns

Re-engagement/win-back emails

Post-purchase and thank-you emails

Order and shipping confirmations

Audible’s approach is textbook: a simple thank you message, an order summary, a link to the purchased audiobook and more listening suggestions. Not only does it work as a receipt, but it also tries to draw the client’s attention to more products. 

Subject lines in this category are pretty straightforward:

Feedback and review request emails

VIP/exclusive offers

Refill and repeat purchase reminders

Browse abandonment emails

Event-based emails

While we’re here, we also invite you to check our comprehensive guide on writing great subject lines for event emails. 

FAQ about e-commerce subject lines

What makes an e-commerce email subject line “good”?

A good e-commerce subject line is clear, specific and relevant. It gives a concrete reason to open (e.g., a benefit, offer or update), avoids clickbait and matches the email content. Personalization and a sensible sense of urgency can further lift opens.

How long should my subject line be?

Aim for ~50 characters so it doesn’t get truncated on mobile. Short, straight-to-the-point lines are more scannable and typically perform better on phones.

Should I personalize subject lines with names or preferences?

Yes. Using names and known preferences (past purchases, categories viewed) makes messages feel relevant and less “spammy,” which can improve open rates.

How do urgency and scarcity help?

They counter procrastination. Phrases like “ends today,” “last chance,” “limited-time” nudge faster action — just make sure the email genuinely reflects the urgency.

Can I use emojis and “power words”?

Use them sparingly and purposefully. Overusing power words or ALL CAPS can trigger spam filters and feel unprofessional. A well-placed emoji can add warmth for the right audience.

How do I avoid spam filters?

Don’t oversell (e.g., multiple “FREE”/“BUY NOW”), avoid excessive punctuation or caps, and maintain a good sender reputation. Clear, relevant copy and light personalization help.

What preview text should I use with my subject line?

Treat the preview text like a second headline. Expand or clarify the value from the subject line (e.g., “Plus free shipping today only”). Avoid repeating the subject verbatim.

How do I know which subject line will work best?

A/B test within the same segment. Try 2-3 variants, send to a subset, analyze opens (and downstream clicks/conversions), then roll out the winner to the rest.

Conclusion: Turning subject lines into sales

Subject lines are a great ally when it comes to open rates, conversion and customer retention for your e-commerce business. If it’s clear and engaging, chances are that your recipients will open the email, and then your carefully crafted content will do the rest for you.

Don’t forget:

• Keep it short, simple, clean and clear.
• Don’t resort to clickbaiting.
• Be careful about spam words.
• Test your versions and see what works best.
• Optimize for mobile.
• Personalize whenever possible.
• Be creative, but sound professional.

We hope all the tips and examples provided in this article help you write great subject lines and achieve even better results. Good luck and good sales!