Any alternative to regex email validation?
2101
How to validate an email address in JavaScript
16448
Is there an alternative to string.Replace that is case-insensitive?
74098
In Python, is there a way to validate a user input in a certain format?
35850
Using regular expressions to validate a numeric range
41311
To Check if Org-wide email is verified in APEX
28586
Is the regular expression [a-Z] valid and if yes then is it the same as [a-zA-Z]?
43324
RegEx to Reject Unescaped HTML Character
9171
regex for matching something if it is not preceded by something else
139967
Remove everything except characters between ',' in Vim -- extract email addresses from Gmail "To" field
142278
Use email to validate post, not unlike craigslist
133591
Validate (X)HTML in Python
79296
How to validate an email address in PHP
28522
how can I mark an email message as "not spam" in Google Inbox?
137184
RegEx to parse or validate Base64 data
34715
PHP email validation function
44277
How to validate smtp credentials before sending mail?
156204
validate email format only if not blank Rails 3