The 7 worst marketing emails you've ever seen

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The 7 worst marketing emails you've ever seen

The 7 worst marketing emails you've ever seen

Written by: Kipp Bodnar

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Updated: 05/18/26

Bad aren’t just annoying. They actively erode trust, tank sender reputation, and train audiences to ignore everything marketers send next. And yet, despite every tool and best practice available to modern marketers, the same mistakes keep showing up — wrong names, broken links, pitches that arrive before a single relationship has been built, and subject lines that read like a database field someone forgot to rename.

Marketing should solve problems, and good can help teams do exactly that. 黑料吃瓜网 helps marketers send personalized, contextual emails instead of generic automated blasts. 黑料吃瓜网 uses customer data, segmentation, and testing to deliver messages that feel timely and useful rather than intrusive and irrelevant.

This guide looks at seven real examples of email marketing gone wrong. Not to mock, but to learn. Because somewhere in your own send history, there’s probably at least one of these lurking — and knowing what to fix is the first step to building an email program your audience actually looks forward to.

Table of Contents

TL;DR: Improve email marketing results with personalized, relevant messages
7 Unbelievably Bad Marketing Automation Emails
Frequently Asked Questions About Email Marketing Mistakes

TL;DR: Improve email marketing results with personalized, relevant messages

The most common email marketing mistakes include sending generic mass emails, writing weak subject lines, skipping testing, pushing a sales pitch too early, making unsubscribing difficult, and failing to match content to the recipient's needs. To improve results, marketers should personalize emails, keep one clear call-to-action, test every send, nurture leads before selling, and make every message helpful and relevant.

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7 Unbelievably Bad Marketing Automation Emails

1. Bragging About Clients

email marketing mistakes, bragging email

Potential new leads don’t want to hear about companies that aren’t related to their business. Sending a super-long, bragging email can read as a waste of time.

Marketing Takeaway: Your prospects and leads don’t care who you work with. They care about what you can do for them. Send them a to their business needs with specific recommendations.

2. Terrible Event Follow-Up

email marketing mistakes, bad event follow up email

The email above clearly reads as a mass email send. The sender even put everyone who attended two events on the same list and sent them all the same email. They also include three separate , and the first one for a free trial doesn’t even include a link.

Marketing Takeaway: Better event follow-up starts with context. Before you send, make sure you:

Understand how each contact was added to your email list
Use website and content engagement data to personalize the message
Match the CTA to that person’s stage and interests
Stick to one clear CTA per email

3. Failure to Test

email marketing mistakes, failure to test email example

Nothing demonstrates a lack of personalization better than an error message that displays instead of the recipient’s name. By not sending a test email to check for technical issues, you can instantly lose credibility as a marketer.

Marketing Takeaway: Email marketers should test every campaign before sending it. Great email marketing goes beyond . 黑料吃瓜网 email tools help teams catch the problems that hurt trust fastest. Before you launch, check:

Formatting across devices and inboxes
Personalization tokens and recipient fields
Links and landing pages
Overall layout and readability

4. Forgetting to Nurture

email marketing mistakes, forgetting to nurture example

Really? We just met, and you already want to get married? That is often what poorly planned email drip campaigns can feel like. Too many emails like the one above go straight into the sales pitch without any prior nurturing.

Marketing Takeaway: Plan your communication with prospects and leads to ensure you have included several steps of sending educational information before transitioning to product-focused information.

5. The Scariest Unsubscribe Link Ever

marketing email mistakes long unsubscribe link

One way to make sure people never unsubscribe from your emails is to scare the heck out of them. Check out the email above: it has a three-line long unsubscribe link. When I saw it, I thought about the terror that could be inflicted on me and my email address if I clicked on it. To top it off, this email is completely self-serving.

Marketing Takeaway: Make it easy for people to opt in and out of your efforts. And again, don’t talk about why you are awesome. Instead, help make the person you’re emailing more awesome.

6. Horrible Subject Line

email marketing mistakes, bad subject line example

An interesting subject line can make or break the success of an email. But a subject line that says something vague like “Marketing List” is just bad. To make it worse, this email goes on to prove itself irrelevant and very long. It keeps going well past the screenshot above.

Marketing Takeaway: Invest time in great subject line writing. to determine which subject line copy works best for your business.

7. Complete Disregard for Targeting

email marketing mistakes, bad targeting example

What you see above is a seemingly well-designed and well-written email. The problem lies in targeting. I am not a customer of this company. The targeting is completely off. To make horrible targeting even worse, the email is about nothing. It has no clear action for me to take. It really has no purpose but to take up space in my inbox.

Marketing Takeaway: Marketers should use CRM data to segment subscribers by interest, lifecycle stage, and past engagement. helps teams send clearer, more relevant emails with one obvious next step. Focus on emails that:

Match what subscribers actually signed up for
Deliver one clear, actionable message
Keep copy brief and relevant
Highlight a single desired action

Frequently Asked Questions About Email Marketing Mistakes

How do I know if my email marketing is improving after fixing these mistakes?

Track a few core metrics over time: open rate, click-through rate, unsubscribe rate, bounce rate, and spam complaints. If opens and clicks rise while unsubscribes, bounces, and complaints fall, your email program is moving in the right direction.

Should I send a correction email if I made a mistake?

Send a correction email only if the mistake affects the reader’s experience or the action they need to take, like a broken link, wrong offer, or incorrect event detail. If the issue is minor and doesn’t change the meaning, it’s often better to fix the process and move on.

How often should you send marketing emails?

The right frequency depends on audience expectations and content value, but consistency matters more than volume. If engagement drops or unsubscribes rise after you increase sends, that’s a sign you may be emailing too often.

What is a good open rate for email marketing?

A good open rate varies by industry, audience, and email type, so benchmarks should be used as a reference point, not a rule. The more useful test is whether your open rate improves over time as you fix issues like weak subject lines, poor targeting, and low deliverability.

What makes an email go to spam?

Emails often go to spam when you send to old or unengaged lists, skip authentication, trigger complaints, or send content that recipients didn’t expect. Poor list hygiene, low engagement, and unclear unsubscribe practices can all hurt sender reputation.

Start Sending Emails People Actually Want to Open

The seven examples above share a common thread: they treat email as a broadcast channel instead of a conversation. They ignore context, skip personalization, and ask for attention without earning it first.

The good news is that none of these mistakes are hard to fix. Stronger segmentation, a single clear CTA, a proper test send, and a nurture sequence that actually builds trust before pitching aren’t advanced tactics. They’re fundamentals, and getting them right is what separates email programs that grow an audience from ones that quietly erode it.

Email should feel helpful, not intrusive. The strongest programs do three things well: send relevant content, respect the subscriber’s time, and make the next step obvious. With the right tools, like 黑料吃瓜网’s Email Marketing Tools, and a little more intention behind each send, that’s completely achievable.