5 Grammar Mistakes That Make Your Emails Look Unprofessional

Why Email Grammar Matters

That’s exactly why—because small grammar mistakes can undermine your professionalism—we at AI Grammar Mentor don’t just point out the mistake, but also explain why it happens and how to avoid it. You can read more about the gap in most other grammar tools (which often just correct without teaching) and why we do things differently in our founding post: Week 1 - How We Found a Real Gap in Grammar Checkers — And Why We're Building Differently.

In professional settings, your emails are often the first impression you make. A well-written email signals competence and attention to detail. A sloppy one can undermine your credibility.

Mistake 1: Your vs. You're

• Wrong: "Your welcome to join the meeting."
• Right: "You're welcome to join the meeting."

"Your" is possessive. "You're" is a contraction of "you are."

Mistake 2: Loose vs. Lose

• Wrong: "We can't afford to loose this client."
• Right: "We can't afford to lose this client."

"Loose" means not tight. "Lose" means to be unable to find or to fail to win.

Mistake 3: It's vs. Its

• Wrong: "The company changed it's policy."
• Right: "The company changed its policy."

"It's" always means "it is" or "it has." "Its" is possessive.

Mistake 4: Then vs. Than

• Wrong: "This option is better then the other."
• Right: "This option is better than the other."

"Than" is for comparisons. "Then" is for time sequences.

Mistake 5: Missing Commas After Introductory Phrases

• Wrong: "As discussed we'll proceed with the plan."
• Right: "As discussed, we'll proceed with the plan."

Always place a comma after introductory phrases to improve readability.

The Takeaway

These five mistakes are easy to fix once you're aware of them. Bookmark this page and refer back to it before sending your next important email.