Low Email Open Rates? Check These 7 Things in This Order

Quick answer: Check inbox placement first, then list health, then subject lines. If emails land in spam or a third of your list has been inactive for months, fix that before touching design or send times. Track clicks too, since open counts are inflated by Apple Mail.↗ Share on X

If your email open rates are low, check these three things first, in this order: are your emails reaching the inbox (not spam or the Promotions tab), is your list full of people who stopped caring, and does your subject line give a clear reason to open. Most open-rate problems come from one of those three. Changing your design, your font, or your email tool rarely moves the number until those are fixed.

This checklist walks you through each check, what "bad" looks like, and exactly what to do about it. Work from the top down. Don't skip to subject lines if your emails are landing in spam.

First, can you trust your open rate number?

READ ALSOHow to Pick the Right Email Automation Tool for Small Business Beginners →How to Segment Your Email List by Engagement for Better Opens →How to Train AI to Write Persuasive Product Reviews for E-Commerce →

Before you fix anything, know what the number means. Your email tool counts an "open" when a tiny invisible image inside the email loads. That has two big problems:

1. Apple Mail loads images automatically for many users, even if they never read the email. This makes open rates look higher than they really are.

2. Some people block images. They can read your whole email and still count as "not opened."

So open rate is a rough signal, not a precise score. Use it to compare your own emails against each other over time. Don't obsess over one email or over what other companies report.

A better habit: track clicks and replies next to opens. If opens drop but clicks stay steady, the problem may be measurement, not your audience.

Check 1: Are your emails landing in spam?

If your emails go to spam, nothing else on this list matters. People can't open what they never see.

How to test it in 10 minutes

1. Create free accounts on Gmail, Outlook, and Yahoo if you don't have them.

2. Subscribe those addresses to your own list, using your real signup form.

3. Send your next normal email.

4. Look where it lands in each inbox: Primary, Promotions, or Spam.

If it lands in spam in two or more of them, fix this before anything else.

What usually causes it

SPF, DKIM, and DMARC sound technical. They are simply text records you add to your domain settings, like adding a contact to your phone. Gmail and Yahoo now expect bulk senders to have them. Most email tools will check them for you and show a green or red light.

Check 2: Is your list full of people who stopped caring?

READ ALSOHow to pick a host that grows with your online store →How to Increase Email Open Rates: 11 Fixes That Work →Why Are My Emails Going to Spam? 9 Fixes That Really Work →

A list of 5,000 people where 3,000 haven't opened anything in six months will always have a low open rate. Worse, inbox providers notice that nobody engages. Then they start sending you to spam for the people who *do* care.

How to find inactive subscribers

1. In your email tool, filter for people who haven't opened or clicked in 90 to 180 days.

2. Check how many that is. If it's more than a third of your list, it's hurting you.

3. Also look for people who joined but never opened a single email.

What to do with them

Send a short "win-back" series of two or three emails:

• Email 1: "Still want to hear from us?" with one clear button to stay subscribed.
• Email 2 (a few days later): Your single most useful piece of content or offer.
• Email 3: "We'll stop emailing you on [date] unless you click here."

Anyone who doesn't respond, remove them or move them to a separate list you email rarely. Yes, your list gets smaller. But your open rate goes up, your emails reach more inboxes, and many email tools charge by list size, so you may pay less.

Check 3: Does your subject line give a reason to open?

Once your emails reach the inbox and your list is healthy, the subject line is the biggest thing you control.

A good subject line answers one question for the reader: "What do I get if I open this?"

Subject lines that work vs. ones that don't

Simple rules for writing them

1. Be specific. Numbers, days, and concrete things beat vague excitement.

2. Keep it short. Many people read on phones, where long subject lines get cut off. Aim for roughly 30 to 50 characters, and put the important words first.

3. Write like a person. Avoid ALL CAPS and stacks of exclamation marks.

4. Match the email. If the subject promises a recipe, the email must deliver a recipe. Tricking people gets you one open and a lot of unsubscribes.

5. Use the preview text. That's the gray line shown after the subject in most inboxes. If you leave it empty, it may show "View in browser" or random text. Use it to add a second reason to open.

Check 4: Is your "from" name recognizable?

People decide whether to open based on who it's from almost as much as on the subject.

• Use a name people recognize from when they signed up. If they joined on your website "Green Leaf Garden Shop," don't send as "GLGS Marketing."
• A person's name plus the business can feel friendlier: "Maria at Green Leaf."
• Don't change it often. Every change makes people wonder who is emailing them.
• Avoid "noreply@" addresses. They tell readers you don't want to hear back, and replies are a good sign for inbox providers.

Check 5: Are you sending at a sensible time and pace?

Timing matters less than most articles claim, but two things are worth checking.

How often you send

Too rarely, and people forget who you are. Too often, and they tune out or unsubscribe. A steady schedule, such as once a week on the same day, helps people expect you. If you send more than a few times a week, watch your unsubscribe rate closely.

When you send

There is no universal best hour. Your audience is different from everyone else's. Test it yourself:

1. Pick two send times, like Tuesday 9 a.m. and Thursday 7 p.m.

2. Send similar emails at each time for four weeks.

3. Compare opens and clicks.

4. Keep the winner, then test it against a new time.

Many email tools can also send at each subscriber's local time zone. Turn that on if your list spans several time zones.

Check 6: Did you set expectations at signup?

People open emails they expected. Look at your signup form and your welcome email:

• Does the form say what you'll send and how often? "Weekly recipes, every Sunday" beats "Join our newsletter."
• Do new subscribers get a welcome email right away? The first email is usually the most opened one you'll ever send. Use it to deliver what you promised and ask them to reply or move you to their main inbox.
• Did the free download or discount they signed up for actually arrive? If not, they learn to ignore you.

If people signed up only for a one-time coupon, expect lower open rates later. That's not a subject line problem; it's a signup promise problem.

Check 7: Are you splitting your list at all?

Sending the exact same email to everyone is the fastest way to be irrelevant to most of them.

Start simple. You don't need fancy automation:

1. New vs. long-time subscribers. New people need basics; long-time ones don't.

2. Customers vs. non-customers. Don't send a "first purchase discount" to someone who buys every month.

3. Interests. Add one question at signup, like "What are you most interested in?" with two or three choices.

Even one split can make each email feel more personal and more worth opening.

Your 7-point checklist at a glance

Your next step this week

Don't try to fix all seven at once. Do this:

1. Today: Send your next email to Gmail, Outlook, and Yahoo test accounts. Note where it lands.

2. If it hits spam: Open your email tool's help page on domain authentication and set up SPF, DKIM, and DMARC before your next send.

3. If it lands in the inbox: Filter your list for people inactive 120 days and schedule a three-email win-back series.

4. For your next three emails: Rewrite each subject line using the "What do I get if I open this?" test, and fill in the preview text every time.

Write down your open rate and click rate before you start. Check again after four weeks of sends. That comparison, against your own past numbers, is the only benchmark that really matters.

FAQ

Why did my open rate suddenly go up or down?

Open tracking depends on a hidden image loading. Apple Mail can load it automatically, and some people block images, so sudden changes can be measurement noise. Compare clicks over the same period before assuming your audience changed.

Should I delete inactive subscribers?

Send them a short win-back series first. Remove or separate anyone who still doesn't open or click. A smaller engaged list usually reaches the inbox more often than a large list full of people who ignore you.

What is the best time to send marketing emails?

There is no single best time for every audience. Test two send times for about four weeks, compare opens and clicks, keep the winner, and then test it against a new time.