The ISEMAIL function in Google Sheets is designed to validate whether a specific value conforms to the standard format of an email address. This function is particularly useful for ensuring data integrity in spreadsheets that require email information, helping users avoid errors and maintaining consistency across datasets.

Syntax

ISEMAIL(value)

• value: The text string that you want to check for email validity.

Example #1

ISEMAIL("example@domain.com")

This function checks if “example@domain.com” is a valid email address. Result: TRUE

Example #2

ISEMAIL("invalid-email")

This function verifies whether “invalid-email” is correctly formatted as an email address. Result: FALSE

Example #3

ISEMAIL("user@sub.domain.com")

This function validates the email “user@sub.domain.com” to check its correctness. Result: TRUE

Error handling

• VALUE!: This error occurs if the input is not a text string. Ensure the value being checked is indeed a string.
• N/A: This indicates that the input is blank. Provide a valid string to avoid this error.

Conclusion

In summary, the ISEMAIL function is an invaluable tool for anyone managing data within Google Sheets that includes email addresses. By leveraging this function, users can quickly ascertain the validity of email formats, thereby enhancing data accuracy and reliability. Whether for data entry, validation, or error-checking, ISEMAIL provides a straightforward solution to email verification tasks.