Match valid email addresses that belong to a specific domain example.com, while also allowing for optional subdomains

Asked Sep 01 '23 at 05:26

Active Sep 01 '23 at 05:56

Viewed 27 times

import re

def validate_email(email):
    pattern = r'^(?:(?:[a-zA-Z0-9_-]+\.)*[a-zA-Z0-9_-]+@)?(?:[a-zA-Z0-9_-]+\.)?example\.com$'
    return re.match(pattern, email)

emails = [
    "[email protected]",
    "[email protected]",
    "[email protected]",
    "[email protected]",
]

for email in emails:
    if validate_email(email):
        print(f"{email} is a valid email.")
    else:
        print(f"{email} is NOT a valid email.")

In this code, the regular expression is designed to match email addresses that belong to the domain example.com and can include optional subdomains. It should handle variations like [email protected], [email protected], and [email protected]. but its not working as expected

asked Sep 01 '23 at 05:26

prabu naresh

Would this be sufficient? `.+?@(?:.+?example\.com$|example\.com)` – Cow Sep 01 '23 at 05:32
`[\w.]+@(?:\w+\.)?example\.com` – CAustin Sep 01 '23 at 05:33
@Cow That wouldn't be an expected pattern if we're just talking about typical subdomains. – CAustin Sep 01 '23 at 05:35
2

You might be best off using a specialised email address parser, and then greping to find the URL after the @ sign. Email addresses are stranger than you could possibly imagine – Mark Sep 01 '23 at 05:36
See: https://www.netmeister.org/blog/email.html – Mark Sep 01 '23 at 05:37
2

@Cow Ah, I was just looking at the examples in the code. In that case, you can use `[\w.]+@(?:[\w.]+)?example\.com` – CAustin Sep 01 '23 at 05:37
@CAustin You should make an answer – Cow Sep 01 '23 at 05:41

Match valid email addresses that belong to a specific domain example.com, while also allowing for optional subdomains

0 Answers0