What Data Type Should an Email Be?


Heather Bennett

In the world of programming and data management, choosing the right data type is essential for efficient and accurate storage and manipulation of information. When it comes to email addresses, selecting the appropriate data type can make a significant difference in how you handle and validate user input. In this article, we will explore the different data types commonly used for storing email addresses and discuss their advantages and limitations.


The most common data type used to store email addresses is a string. A string is a sequence of characters enclosed in quotation marks.

It allows you to store any combination of alphanumeric characters, symbols, and special characters that are typically found in email addresses. For example:

let email = "example@example.com";

Using a string to store an email address provides flexibility as it does not impose any specific validation rules. However, it also means that you need to implement additional checks to ensure the entered value is a valid email address. Regular expressions can be used for this purpose.

Email Type

In some programming languages or libraries, there might be a specific email data type designed explicitly for storing email addresses. This data type often includes built-in validation methods to ensure that the entered value conforms to the standard format of an email address.

let email = new Email("example@example.com");

Using an email-specific data type can simplify validation logic by automatically checking if the provided value meets the required criteria before accepting it as a valid input.

Custom Object

In more complex scenarios where you need to store additional information related to an email address, using a custom object might be appropriate. This object can contain properties such as ‘username’, ‘domain’, ‘top-level domain’, and so on.

let email = {
  username: "example",
  domain: "example",
  tld: "com"

By using a custom object, you can easily access and manipulate different parts of an email address without the need for complex string operations. It also allows for additional data to be stored alongside the email address if required.


When deciding on the appropriate data type for storing email addresses, you should consider the specific needs of your application. While a string provides flexibility, it requires additional validation checks.

An email-specific data type can simplify this process by offering built-in validation methods. In more advanced cases, a custom object allows for easy manipulation of various parts of an email address and the inclusion of additional data.

Whichever data type you choose, remember that validating user input is crucial to ensure accurate and secure storage of email addresses in your application.

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