Are Emails Case Sensitive? Here’s What You Need to Know

What to Know

  • Email addresses are not case-sensitive, so you don't have to fix accidental capitalization.
  • You can capitalize certain letters in your email address to make it easier for others to read and memorize.

Do you take time out of your busy day to worry about email address case sensitivity? I know I have! The good news is that you don't need to fix accidental capitalization or turn caps lock off when writing an email because emails are not case-sensitive. Learn how to use this to your advantage!

Is Email Case Sensitive: Email Case Sensitivity 101

Are email addresses case-sensitive? No, they are not! So if you accidentally capitalized the first letter or had your caps lock on while typing, there's no need to retype the email address. Your recipient will receive the email no matter their case. This means that you can capitalize your email address in a way that will make others more likely to remember it easily. For more email tips and tricks, check out our free Tip of the Day newsletter.

For example, our customer service email here at iPhone Life magazine is We could write it as to make it stand out more and make it a little easier for customers to read and remember. I prefer to use strategic capitalization when writing out useful email addresses on websites, social media, and especially business cards.

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Now you know that email addresses are not case-sensitive. Next, learn how to use Hide My Email to protect your identity with dummy accounts.


  • What is the meaning of case sensitive/case sensitivity? Case sensitivity refers to differentiating between capital and lowercase letters. If something is not case-sensitive, then it doesn't matter what the case of the letters is.
  • Do capital letters matter in emails? While it is best to use proper capitalization in the text and subject portions of your email, it doesn’t matter when it comes to email addresses.
  • Are URLs case-sensitive? Technically, they are case-sensitive, but many servers and browsers will automatically turn them lowercase. Apparently, having mixed-case URLs can cause problems, although I have personally not experienced any.
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Author Details

Olena Kagui's picture

Author Details

Olena Kagui

Olena Kagui is a Feature Writer at iPhone Life. In the last 10 years, she has been published in dozens of publications internationally and won an excellence award. Since joining iPhone Life in 2020, she has written how-to articles as well as complex guides about Apple products, software, and apps. Olena grew up using Macs and exploring all the latest tech. Her Maui home is the epitome of an Apple ecosystem, full of compatible smart gear to boot. Olena’s favorite device is the Apple Watch Ultra because it can survive all her adventures and travels, and even her furbabies.