Grammar, Email, Business

5 Critical Grammar Errors to Avoid in Professional Emails

Oct 30, 2025 ToolMate Team 6 min read

In the professional world, an email is often your first impression. Grammar mistakes can undermine your credibility, leading to confusion or a perceived lack of attention to detail. Luckily, the ToolMate Grammar Checker is here to help.

Here are five critical grammar errors frequently found in professional communication and how to eradicate them before you hit 'Send'.

1. Confusing "Its" and "It's"

This is arguably the most common mistake. **"It's"** is a contraction of "it is" or "it has." **"Its"** is the possessive form (e.g., "The company is proud of **its** new product."). Mastering this shows basic competency.

2. Subject-Verb Agreement Errors

The verb must agree with the subject in number. This becomes tricky when dealing with collective nouns or long phrases separating the subject and verb.

  • **Incorrect:** The team of developers **are** working late.
  • **Correct:** The team of developers **is** working late.
A graphic illustrating an email draft with several grammatical errors highlighted, showing the need for a grammar checker tool.

3. Misplaced Modifiers

A misplaced modifier is a word or phrase that describes something but is placed incorrectly, causing the sentence to sound illogical or unintentionally humorous. Ensure the modifier is placed directly next to the word it is modifying.

Example: "We only sell software to clients who pay upfront." (Implies no other action, like giving away free software.) vs. "We sell software only to clients who pay upfront." (The intended meaning.)

**ToolMate Insight:** Our Grammar Checker doesn't just catch spelling; it identifies complex structural errors like misplaced modifiers and passive voice, which are critical for clear business communication.

4. Run-on Sentences and Comma Splices

A run-on sentence joins two or more independent clauses (complete sentences) without proper punctuation or conjunctions. A comma splice uses only a comma to join them. These errors make your message confusing and difficult to read.

Correction Method: Separate them into two sentences, use a semicolon, or use a comma followed by a conjunction (e.g., *and*, *but*, *or*).

5. Inappropriate Tone (Passive vs. Active Voice)

While not strictly a grammar error, relying heavily on the **passive voice** (e.g., "The report was written by John") makes your emails sound weak, evasive, and overly formal. The **active voice** (e.g., "John wrote the report") is direct, professional, and clear.

Conclusion

Every email you send reflects on your professional brand. A flawless email conveys attention to detail and confidence. Before sending your next important message, run it through the ToolMate Grammar Checker to ensure it is polished, persuasive, and professional.

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