Analysis: Are Email Addresses Really Case Sensitive?

email address
You have doubts that you could have for a long time, but you could not find definitive answers. One of them occurs when it comes to an email address and its case-sensitive nature. The email addresses consist of two parts: the first half before the "@" sign corresponds to the user name, while the part after the "@" sign corresponds to the domain name.

Does it make a difference if we send an e-mail to (protected e-mail), (protected e-mail) or (protected e-mail)? In other words, will the planned mail even be delivered, and if so, to whom? Let's look at all these scenarios in detail. In addition, you can even transfer multiple emails at the same time in Gmail. Do not forget to consult this practical advice.

Email address and case sensitivity

There is no concrete and accurate evidence that an email address is case sensitive or not. But in the majority of cases, it does not matter whether the alphabets are lowercase or high (emphasis on the word "majority"). Most of the time, it does not matter if you send an e-mail to (protected e-mail), (protected e-mail) or (protected e-mail). So you can try sending e-mail to one of the following three addresses and the same person will receive the e-mail.

But in rare cases, there is an exception. As already mentioned, the e-mail address consists of a user name and a domain name. The latter is insensitive to the breakage, it is certain. Therefore (protected email), (protected email), and (protected email) are one and the same. This is not only applicable to Gmail but on all mail clients (Outlook, etc.) or even if you create your own with GSuite.

The problem between the e-mail address and the case-sensitive character arises with the part username, that is to say the part preceding the sign "@". Are (email protected) and (email protected) the same? In fact it depends. In most cases, the answer is yes. If you send the email to one of the two addresses, the same person will receive it. So, could we generalize that the user name is also case-insensitive?

Not exactly! This is because there is no absolute rule for the same. However, to avoid confusion, many reputable mail clients such as Gmail, Outlook, or GSuite also ignore case sensitivity. So, they treat (email protected), (email protected), and (email protected) as the same ID.

But some large multinationals that have their own domains sometimes prefer to keep the user name of the email address case-sensitive. Indeed, it can happen that two or more people have the same name. In these cases, to separate users, they assign a case sensitive email identifier. But this is rare and should not be generalized.


In almost all cases, your message will be sent. It does not matter if you send it to (protected e-mail), (protected e-mail) or (protected e-mail). The next time you forget to disable Caps Lock, do not use the Backspace key and continue writing the email address. in all his glory. To conclude, The e-mail address, in general, does not make the difference between capital letters and

Tip: Even full stops do not affect your email address, only the username part. So (email protected) and (email protected) are one and the same thing.

Leave a Reply

Your email address will not be published.