I believe you were looking for something like this:
List of Valid and Invalid Email Addresses
Answer from KonstantinK on Stack OverflowGitHub
gist.github.com โบ cjaoude โบ fd9910626629b53c4d25
Test list of Valid and Invalid Email addresses ยท GitHub
Test list of Valid and Invalid Email addresses. GitHub Gist: instantly share code, notes, and snippets.
Email Hippo
tools.emailhippo.com
Free Email Address Verifier: Verify An Email Address In Real Time | emailhippo.com
Email Hippo's free online email verification tool. Check if email addresses are valid. Verify email addresses and then download results as PDF, CSV. Try for FREE now.
Videos
03:48
How to validate email address - YouTube
06:30
Lead Generation 101 | How do I Verify a List of Email Addresses?
01:29
How to find valid email addresses for your leads [lemlist tutorial] ...
Validate Email Addresses for FREE in 17 Minutes in Google ...
02:37
How to Verify Your Email Addresses (Increase Response Rates) - YouTube
16:26
So you think you can validate email addresses A journey down RFC5321 ...
How can I verify an email address?
There are several ways to verify email addresses. If you only have a few addresses to check, verify each one individually through an online email checker. If you check a large number of email addresses each month or have a large batch to verify, use an email verification tool to automate the process.
clean.email
clean.email โบ verifier โบ how-to-verify-email-list
How To Verify Email List For Your Cold Email Campaign
How frequently should I verify email lists?
It depends on how large your list is, how often you send a campaign, and your bounce rate. Itโs a good idea to verify email lists of addresses regularly and at least every six months. The smaller the list and the lower the bounce rate, the less often you can clean your list. If your organization adds hundreds of addresses each month, monthly cleaning might be a better idea.
clean.email
clean.email โบ verifier โบ how-to-verify-email-list
How To Verify Email List For Your Cold Email Campaign
How to find email addresses with the Email Finder?
To find an email address with Voila Norbert Email Finder, you need two things:
- The full name of your prospect
- The domain name (website URL) which your prospect's company uses to send emails from.
Enter this information into Norbert Email Finder and Norbert will spit back a valid email address in less than a second.
Note: If Norbert can't find an email address, double-check that you have the right domain. Some companies use different domain names for their websites and their emails.
voilanorbert.com
voilanorbert.com
Email Finder: Free 50 Verified Email Addresses - VoilaNorbert
Voila Norbert
voilanorbert.com
Email Finder: Free 50 Verified Email Addresses - VoilaNorbert
There are many ways how to find someone's email address online... You could check their about page, dig through their social media accounts, or even make a blind guess. But since these manual methods are slow and unpredictable, you can instead use a dedicated Email Finder Tool like Voila Norbert. With Norbert, all you need is your prospect's name and the company URL they're working for. Norbert will then fetch you a valid email address in a breeze.
Verifalia
verifalia.com โบ validate-email
Free email address validator
To initiate the email verification, upload your chosen mailing list to our dashboard in one of the supported formats (CSV, Excel, or plain text); once our email verifier finishes the mail list cleaning process, selectively download deliverable emails, focus on invalid or risky ones, or pick items based on their classifications and statuses among the 40+ supported by Verifalia. Our email validator can identify the most elusive disposable email address providers, such as EmailOnDeck, and can check even the most challenging mail exchangers, including Yahoo!
Tumblr
tumblr.com โบ codefool โบ 15288874550 โบ list-of-valid-and-invalid-email-addresses
List of Valid and Invalid Email Addresses โ @codefool on Tumblr
$emails = array( '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', 'email@[123.123.123.123]', '"email"@example.com', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', 'much."more\ unusual"@example.com', 'very.unusual."@"[email protected]', 'very."(),:;<>[]".VERY."very@\\\\\\ \"very"[email protected]', 'plainaddress', '#@%^%#$@#$@#.com', '@example.com', 'Joe
Gigasheet
gigasheet.com โบ post โบ valid-email-address-list
The Easy Way to Build a Valid Email Address List
Valid Email addresses have a pretty specific format and there isn't really any wiggle room: ... And there can't be any spaces in between! For example, in the address [email protected] "info" is the prefix and "gigasheet.com" is the email domain. When email lists with wrong addresses, burner emails, and fake domains are common, you must perform email validation before hitting send.
Kickbox
kickbox.com โบ email-list-verification
Check Email Lists to Find Valid Email Addresses with our Drag and Drop Email List Verifier | Kickbox
Connect the Kickbox API to protect your email database from typos & invalid addressesโanywhere you capture email data online. For most businesses (and marketers!) your email list is your most valuable asset.
Campaign Refinery
campaignrefinery.com โบ valid-email-address-list
5 Ways to Build a Valid Email Address List
December 20, 2024 - How do you add valid email address to your email list? The answer lies in using the double-opt-in method, verifying recipients, and maintaining regular hygiene. The most important of the three is list-cleaning. At Campaign Refinery, our clients get access to an automated list-cleaning feature that detects invalid email addresses and removes them.
Xmatters
help.xmatters.com โบ ondemand โบ trial โบ valid_email_format.htm
Valid email address format
A valid email address consists of an email prefix and an email domain, both in acceptable formats.
AbstractAPI
abstractapi.com โบ api guides, tips & tricks โบ how to check if an email address is in a valid format
How To Check If An Email Address Is In A Valid Format
June 24, 2025 - However, many email services limit which symbols are acceptable to ensure consistency and avoid errors. For reliable validation, it's best to accept only the more commonly used characters listed above. ... Invalid: [email protected] or [email protected]. Consecutive periods are not allowed in the local part ... Spaces and most punctuation marks (e.g., #, !, %) are not permitted. If an address contains a space or unsupported character, it's considered an invalid format.
Clearout
clearout.io โบ clearout: bulk email validation & email verification service | email verifier, email finder and email tester โบ what is a valid email address format?
What is a Valid Email Address Format - Clearout
March 13, 2025 - Email validation is the process of determining the deliverability and validity of an email address. It entails employing various methods, such as syntax checking, typo checking, SMTP verification, and so on. It makes it simple to detect and eliminate bogus email addresses. As a result, you can keep your mailing list clean by including only valid email addresses.
Campaign Refinery
campaignrefinery.com โบ what-is-a-valid-email-address
What is a Valid Email Address?
January 6, 2025 - This method might work if you have fewer emails to test โ type the recipient email address in Google, and it should show if itโs valid. People use their email addresses publicly, which makes it easier to sweep through the database and find an existing email address. Having a recipient list with a valid gmail address or valid email IDs in general can help you land in Gmailโs primary inbox instead of the spam folders.
Scribd
scribd.com โบ document โบ 698618502 โบ 41-Verified-Email-List-1
41 Verified Email List | PDF | Email | Online Services
The document contains results from validating email addresses and their domains. It lists 50 email addresses, their associated domain (e.g. gmail.com, yahoo.com), and whether they contained a valid MX record and domain pattern.
Hunter
hunter.io โบ email-verifier
Email Verifier: Free email checker to avoid risky email addresses โข Hunter
Below is a description of all email checks performed by the Email Verifier on every email address: Valid format: First, we validate the format of the email address is correct and looks something like [email protected].