We’ve all heard the expression “content is king.” That’s never been more true than in the marketing business. But behind that content are the writers who put the words to paper (or screen as it is now). The Internet has made writers of us all. But not even the best writers catch every little mistake or grammar error in an article or website content. Yet if we want to sell and market our services, our content needs to be as error free as possible.

That’s where Grammarly comes in.

What is Grammarly?

Grammarly is a simple and powerful writing app that corrects more types of spelling and grammatical mistakes than any other software on the market. It scans your text for proper use of more than 250 advanced grammar rules, spanning everything from subject-verb agreement to article use to modifier placement. The product suite comprises the Grammarly Editor online editing tool; browser extensions for Chrome, Firefox, and Safari; Grammarly for Microsoft Office; and Grammarly for your desktop, a convenient desktop editor for Mac and PC.

250 Grammar Rules
Grammarly scans your text for proper use of more than 250 advanced grammar rules, spanning everything from subject-verb agreement to article use to modifier placement.

Not Your Average Spell-Check
Don’t you hate it when you spell a word correctly, but you’re using it in the wrong context? Grammarly spots erroneous use of lose/loose, affect/effect, lie/lay, there/their/they’re, and many other commonly confused words.

Vocabulary Enhancement
The tool also provides context-optimized word choice suggestions to instantly improve the readability of your document. This means that if there’s a more appropriate or powerful word choice available for the sentence you’re writing, Grammarly will suggest it. Think of it as a Thesaurus that is always working for you.

How Does Grammarly Work?

One of the nice things about Grammarly is how easy it is to use. There are two ways you can use the tool:

  • Copy and paste any English text into Grammarly’s online text editor.
  • Install Grammarly’s free browser extension for Chrome, Safari, and Firefox.

Grammarly’s algorithms flag potential issues in the text and suggest context-specific corrections for grammar, spelling, and vocabulary. It also explains the reasoning behind each correction, so you can decide whether it’s in fact a mistake, or a purposeful choice.

What’s cool about the tool is it works anywhere you write on the web, including Gmail, blogs, Facebook, Twitter and LinkedIn.

Case Study: Grammarly Explains When Email Mistakes Occur

Need more proof that Grammarly can help improve your writing and marketing? They recently analyzed more than one billion words proofread by the writing app over the course of one month. What they discovered is people make fewer errors during the day. They based their findings on the time of day writing mistakes occurred and classified them according to four categories: email, social media, and blogs/Microsoft Word.


  • Good news for Early Birds! Research shows individuals writing between 4 and 8 a.m. made 18% fewer mistakes than those writing between 10 p.m. and 2 a.m.
  • People made an average of 13 mistakes per 100 words when writing email.
    • By comparison, they made 39 mistakes per 100 words when writing social media posts, but only 6.5 when writing blog posts.
  • Misspelled words account for more than half of all email mistakes.


Mistakes by Writing Type

Overall Mistakes by Time of Day *

Top 5 Confused Words

  • Apostrophe Mistakes (e.g., let’s vs. lets)
  • Too vs. To
  • Everyday vs. Every Day
  • There vs. Their
  • Than vs. Then

Grammarly Writing Analysis Early Bird vs. Nigh Owl

Have you used Grammarly to help your writing and proof-reading? How has it worked for you?