Most people know a bad email when they receive one. In this guide, we will look at bad email examples and how to avoid them. Whether you are a professional, business owner, or anyone looking to improve your email communication, understanding what makes an email ineffective is essential for maintaining professionalism and building strong business relationships.
Bad email examples are messages that lack clarity, structure, or a professional tone, making them confusing or even damaging to your reputation. Poorly written emails lack clarity and can cause confusion. Common email mistakes include vague subject lines and careless typos. By recognizing these pitfalls, you can avoid common mistakes and improve your professionalism in every message you send.
Maintaining a professional tone prevents misunderstandings and enhances communication. A professional tone means using language and structure appropriate for the workplace, which helps ensure your message is received as intended.
The Common Thread in Poorly Written Emails
Why bad emails happen
Most unprofessional emails share one or more of these problems:
- Unclear intent: The reader finishes the email and still does not know what they are supposed to do.
- Mismatched tone: Too aggressive, too casual, or too passive for the context, instead of keeping a respectful tone that helps build professional relationships. Maintaining a professional tone prevents misunderstandings and enhances communication.
- Poor structure: The important thing is buried, the subject is misleading, there is no clear subject line, or the email has a weak sign-off or missing email signature.
How to write better emails
A good email starts with a goal before you start writing, includes only relevant information, and ends with a clear next step. Emails with multiple unclear calls to action confuse recipients. A professional email signature should include your name, job title, company name, and LinkedIn profile when appropriate.
AI email tools often make these problems worse, not better. They default to filler openers, verbose phrasing, and generic sign-offs that add length without adding clarity, and lines like "I hope this message finds you well" can weaken the opening when they replace substance. The result reads like it was written by someone who was not sure what they wanted to say.
ForthWrite drafts from your voice and focuses on what the email actually needs to accomplish, not what a statistically average professional email sounds like. If you find yourself cleaning up AI drafts more than you are using them, it is worth trying an approach built on how you write, not how everyone else does, especially for a business owner trying to protect a professional image and make a good impression through business correspondence.
Before you send, review the previous email, confirm the recipient, and make sure your follow-up email includes what they need.
Now, here are 10 unprofessional email examples with the specific mistakes, why they land wrong, and what to write instead.
1. The Passive-Aggressive Follow-Up
What's wrong
Hi Marcus,
Just following up on my email from last Tuesday, and the one before that. I know you're busy but this is pretty time-sensitive on my end.
Let me know.
Best, Sarah
"I know you're busy but" is not a softener: it's an accusation. "The one before that" is a pointed reminder that the recipient has ignored you twice. "Let me know" with no specific ask leaves them nothing to act on.
Fix
Hi Marcus,
Still hoping to connect on the proposal timeline before the 20th. Does Thursday or Friday work for a quick call, or would you prefer I send a summary by email?
Sarah
Specific date, two clear options, no subtext.
2. The Wall of Text
What's wrong
Hi,
I wanted to reach out because I've been thinking about the quarterly review process and I think there are some things we could improve upon, specifically around the way we handle the initial submission phase which I think is causing some confusion for people because they don't know whether they should submit through the old system or the new one and also there's the question of who actually reviews the submissions once they come in because right now it seems like different managers are handling it differently and that's creating some inconsistency in terms of feedback quality and turnaround time, and I think if we could get everyone on the same page about the process it would save a lot of time and confusion.
Thoughts?
One unbroken paragraph, no line breaks, no structure. Like many poorly written emails, it lacks clarity and can cause confusion. The actual request ("thoughts?") is buried at the end and does not specify what kind of response is wanted. It also feels abrupt because it uses only "Hi" and has no sign off.
Fix
Hi,
The quarterly review process has a few friction points I think are worth addressing:
- Submission system: It's unclear whether to use the old or new system. Can we pick one and communicate it clearly?
- Reviewer consistency: Different managers are handling submissions differently, which affects feedback quality and turnaround.
Would it make sense to schedule 30 minutes with the team leads to align on the process? Happy to draft a proposal first if that's more useful.
Structure shows you have already thought it through, with concise organization and clear action items. Proofread before sending to catch grammar mistakes and spelling mistakes.
3. The "Per My Last Email" Move
What's wrong
Hi Derek,
Per my last email, the deadline is Friday, not Monday.
Please let me know if you have any questions.
Thanks
"Per my last email" is understood by everyone as a polite way of saying "you should have read this already." Even if the sender is right, the tone creates friction, puts the recipient on the defensive, and can weaken professional relationships.
Fix
Dear Derek,
Just a quick note to clarify: the deadline for this one is Friday the 18th. I should have made that clearer in my original message. Does that timeline still work for you?
Thanks, and please let me know if you have any questions.
Using a formal greeting and a courteous and professional tone helps maintain a respectful, professional tone and gives the email a clearer, more constructive feel from opening to closing. Maintaining a professional tone prevents misunderstandings and enhances communication.
4. The Overly Casual Professional Email
What's wrong
Hey!!!
So excited to connect with your team!! We've been huge fans of what you're building and would love love love to find a way to work together somehow :)
Lmk when you have a sec!
xo
Multiple exclamation marks, "lmk," "xo," and triple adjectives signal a mismatch between the message's energy and the context. It reads more like text messages than professional emails. This might be appropriate for a friend: it is not appropriate for a first professional contact, where email etiquette and business correspondence expectations matter.
Fix
I've been following [Company]'s work on [specific thing]: genuinely impressive.
I'm [role] at [Company], and I think there's a natural overlap between what we're both doing around [shared area]. Would you be open to a 20-minute call in the next two weeks?
Match the tone of the recipient's industry and communication style. Enthusiasm is fine; "xo" is not. Avoid slang or informal language in professional emails, and keep a professional tone to prevent misunderstandings. Maintaining a professional tone prevents misunderstandings and enhances communication.
5. The Buried Ask and Email Etiquette
What's wrong
Hi Linda,
Hope you're having a good week. I've been working on the Q3 report and wanted to share some updates with you. The data from the first two months looks strong, especially in the enterprise segment where we saw a 22% lift compared to Q2. The SMB numbers are more mixed but I think that's partly a seasonal thing. I've also been looking at the competitive landscape and there are some interesting moves happening there that might be worth discussing.
Anyway, just wanted to keep you in the loop. Talk soon!
There is no actual ask, so the message lacks actionable details and may be ignored. The email body gives Linda a vague message with missing details, and the extra context adds unnecessary information instead of a specific next step. It does not tell her what to do with any of it, whether she needs to respond, whether a meeting is needed, or whether this is just FYI. Bad emails often lack clarity and structure, and emails with multiple unclear calls to action confuse recipients. "Talk soon!" is not a call to action. A call to action is a clear instruction or request for the recipient to do something specific.
Fix
Either make it a clear FYI ("No action needed: just flagging the Q3 highlights before our Thursday meeting") or make the ask explicit ("Can we schedule 30 minutes this week to discuss the SMB numbers and competitive angle?"). Keep it concise and to the point to respect the recipient's time, and end with one clear call to action.
6. The Too-Long Subject Line
What's wrong
Subject: Following up on our conversation last Tuesday about the revised proposal timeline and whether we should move the kickoff meeting to accommodate the new stakeholder availability
Subject lines should ideally stay under 50 characters and remain concise and relevant to the content. This one is 146, and vague or unclear subject lines make it harder for the email recipient to prioritize the message, so they are more likely to be overlooked or deleted.
Fix
Subject: Kickoff meeting timing: quick decision needed
Avoid vague subject lines like "hello" or "quick question." Use clear, specific subject lines that can be personalized and use power words when appropriate to improve engagement.
Front-load the most important word. Include a signal about what is required (decision, update, FYI), and use a clear subject line for every email, for example: "In-person meeting time changed," "Notes from last week," or "Decision needed next week."
7. The Aggressive Deadline
What's wrong
Hi,
I need this by EOD today.
Thanks
"I need" is a demand, not a request. No context explains why EOD is the deadline. No acknowledgment that this may be difficult. It also skips a polite greeting and a polite sign-off, which makes a rushed demand sound harsher. This email puts the recipient in a position of either complying or explaining themselves.
Fix
Hi,
We're presenting this to the client at 4pm today: is there any chance you can get me the numbers by 2? If that's not possible, let me know what you can send by then and I'll work with it.
Context turns a demand into a collaboration. Even urgent requests should use a clear subject line. Double-check grammar, spelling, and punctuation errors before you hit send, because mistakes in short emails stand out fast and poor grammar and spelling can damage credibility. An alternative option makes it easier to say yes to something.
8. The Reply-All That Shouldn't Be
What's wrong
Someone sends a scheduling email to 12 people. You reply-all with "I'm free Tuesday!" and then eight other people do the same, filling everyone's inbox. In an email chain, too many recipients create inbox clutter and can expose sensitive information to the wrong recipients.
The etiquette issue
Reply-all is appropriate when the entire thread needs your response. It is not appropriate when only the sender needs it. In longer email threads, one unnecessary reply can also drag the wider email chain off track and make you look less professional if details go to the wrong person.
Rule
- If the email is asking you for something, reply to the sender.
- Reply-all only when your response adds value for every person on the thread.
- Overusing BCC can look political rather than transparent.
- Keep a respectful tone to build professional relationships.
- Before sending, verify the right person is included.
9. The Ambiguous Tone Email
What's wrong
Hi Tom,
Noted.
Thanks
"Noted" is the most ambiguous word in professional email. It can mean "understood and I'll act on it," "I read this but disagree," or "I'm irritated." Tom now has no idea whether he should follow up or consider the matter closed. It reads even harsher when paired with all caps or other abrupt formatting.
Fix
Confirm what you actually mean. If you are acting on it: "Hi Tom, got it: I'll update the draft by Wednesday. Thanks." If you are flagging a concern: "Thanks for sending this over. I do have some questions about the timeline: can we connect tomorrow?" Tone matters more in email because the reader cannot rely on body language.
10. The Email That Should Have Been a Slack Message (or Vice Versa)
What's wrong
A 400-word email thread that consists of:
- "Does 3pm work?"
- "Let me check."
- "Yes, 3pm works."
- "Great, see you then."
- "One more thing: is it video or phone?"
- "Video."
Four people are included, six replies were generated, and the net information exchanged was: video call at 3pm. In business emails, sender identity and professionalism carry more weight than they do in chatty back-and-forths. This belongs in Slack, not email. When writing emails for business communication, keep them brief: fifty percent of emails sent by top marketers contain 300 words or fewer.
The flip side
A complex decision that requires a paper trail, documentation, or a considered response from multiple stakeholders should not be handled in a chat thread. If it is going to external contacts or potential customers, use a professional email address, because using a personal email address can make you appear unprofessional, and keep the exchange in email when a record matters.
Match the medium to the complexity and permanence of the communication. Professional emails should also avoid slang and jargon: forty-two percent of people open emails based on the sender's name.
Summary: Common Bad Email Mistakes
To help you avoid the most frequent pitfalls, here is a quick checklist of common bad email mistakes:
- Vague or overly long subject lines
- Careless typos and grammar mistakes
- Lack of clarity in the message or request
- Poor structure (walls of text, missing sign-offs, or buried asks)
- Mismatched or unprofessional tone
- Multiple unclear calls to action
- Missing or incomplete email signature (a professional email signature should include your name, job title, company name, and LinkedIn profile when appropriate)
Remember: poorly written emails lack clarity and can cause confusion. Bad emails often lack clarity and structure. Maintaining a professional tone prevents misunderstandings and enhances communication.