Gmail valid email address characters

Doe example. They are:. A quoted string may exist as a dot separated entity within the local-part, or it may exist when the outermost quotes are the outermost characters of the local-part e.

Conversely, abc"defghi"xyz example. Quoted strings and characters however, are not commonly used. The local-part "postmaster" is treated specially - it is case-insensitive, and should be forwarded to the server's administrator. Technically all other local-parts are case sensitive, therefore jsmith example.

However most organizations treat uppercase and lowercase letters as equivalent, and also do not allow use of the technically valid characters space,? Organizations are free to restrict the forms of their own email addresses as desired, e. Systems that send mail must be capable of handling outgoing mail for all valid addresses.

Contrary to the relevant standards, some defective systems treat certain legitimate addresses as invalid and fail to handle mail to these addresses.

Hotmail, for example, refuses to send mail to any address containing any of the following standards-permissible characters:! The domain name part of an email address has to conform to strict guidelines: it must match the requirements for a hostnameconsisting of letters, digits, hyphens and dots.

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In addition, the domain part may be an IP address literal, surrounded by square braces, such as jsmith [ Terence Yu. TechNet Community Support. This pretty much still applies.

gmail valid email address characters

IOW, it won't be rejected as containing "illegal" characters, or being badly constructed. It probably wouldn't pass a test that verifies the domain part of the address. Office Office Exchange Server.

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Remove From My Forums. Answered by:. Previous Versions of Exchange.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I just want to know what are allowed characters in user-name and server parts of email address.

This may be oversimplified, maybe email adresses can take other forms, but I don't care. I'm asking about only this simple form: user-name server e. RFC also covers email addresses, but it deals mostly with its structure:. And as usual, Wikipedia has a decent article on email addresses :. Note that as ofthese standards are still marked as Proposed, but are being rolled out slowly. For validation, see Using a regular expression to validate an email address.

The domain part is defined as follows :. The Internet standards Request for Comments for protocols mandate that component hostname labels may contain only the ASCII letters a through z in a case-insensitive mannerthe digits 0 through 9and the hyphen. The original specification of hostnames in RFCmandated that labels could not start with a digit or with a hyphen, and must not end with a hyphen. However, a subsequent specification RFC permitted hostname labels to start with digits.

No other symbols, punctuation characters, or blank spaces are permitted. Watch out! There is a bunch of knowledge rot in this thread stuff that used to be true and now isn't. To avoid false-positive rejections of actual email addresses in the current and future world, and from anywhere in the world, you need to know at least the high-level concept of RFC"Internationalizing Domain Names in Applications IDNA ".

I know folks in US and A often aren't up on this, but it's already in widespread and rapidly increasing use around the world mainly the non-English dominated parts. I know you don't want links to specs, but if you rely solely on the outdated knowledge of hackers on Internet forums, your email validator will end up rejecting email addresses that non-English-speaking users increasingly expect to work. If you want to "accept all valid email addresses and many invalid too " then you have to take IDN into account, which basically makes a character-based approach useless sorryunless you first convert the internationalized email addresses to Punycode.

The format of e-mail address is: local-part domain-part max. The local-part and domain-part could have different set of permitted characters, but that's not all, as there are more rules to it. Source: Email address at Wikipedia. Perl's RFC regex for validating emails:.

Wikipedia has a good article on thisand the official spec is here. From Wikipdia:. Additionally, quoted-strings ie: "John Doe" example. Google do an interesting thing with their gmail. So to answer the question, sometimes it depends on the implementer on how much of the RFC standards they want to follow.

Google's gmail. They do it that way to avoid confusion where different people would take similar email addresses e. The wikipedia link is a good reference on what email addresses generally allow. You can start from wikipedia article :. I still can't use my. The short answer is that there are 2 answers.

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There is one standard for what you should do. There is another much broader standard for the behaviour you should accept without making trouble. This duality works for sending and accepting email but has broad application in life. To filter valid emails, just pass on anything comprehensible enough to see a next step.If someone accidentally adds dots to your address when emailing you, you'll still get that email.

For example, if your email is johnsmith gmail. Note: If you use Gmail through work, school, or other organization like yourdomain. To change the dots in your username, contact your admin.

Your Gmail address is unique. Your account is still private and secure. Emails sent to any dotted version of your address will only go to you.

For example, johnsmith gmail. Adding dots doesn't change your address, so dots aren't why you got someone else's mail. Instead, the sender probably mistyped or forgot the correct address. For example, if someone meant to email john.

If the email seems irrelevant but not suspicious, reply to the sender saying they have the wrong address. Do not click any links or share personal information. Report the email as spam or phishing. Contact the website to remove your address from their mailing list. Learn how to unsubscribe from emails. Note: Unfortunately, we can't prevent people from accidentally or maliciously using a dotted version of your address to sign up for subscription emails.

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Dots don't matter in Gmail addresses

Send feedback on Help Center Community. Unwanted or suspicious emails Dots don't matter in Gmail addresses. Dots don't matter in Gmail addresses If someone accidentally adds dots to your address when emailing you, you'll still get that email. No one can take your username Your Gmail address is unique.

How to Check Email Address Validity - Email Address Verification - 100% Free Method

No one sees your mail Your account is still private and secure. Notify the sender If the email seems irrelevant but not suspicious, reply to the sender saying they have the wrong address. Report a suspicious email Do not click any links or share personal information. Unsubscribe from newsletters you didn't sign up for Contact the website to remove your address from their mailing list.

Was this helpful? Yes No. Dots don't matter in Gmail addresses.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Google doesn't treat the. Hence hikingfan gmail. These features of Gmail might help you easily create various filters.

Note that the same might not be true for other email service providers. Source: googleblog. Learn more. Gmail valid email address Ask Question. Asked 4 years, 1 month ago. Active 4 years, 1 month ago. Viewed 4k times. The below email address are valid for a given email address devank gmail. Devank Devank 1 1 silver badge 9 9 bronze badges. I'm pretty sure it is only Gmail that exhibits this behaviour. This help? It would be better if you also add amazon-ses tag and add a little note of your issue of sending email to user gmil.

Active Oldest Votes. Ajeet Shah Ajeet Shah 6, 5 5 gold badges 36 36 silver badges 51 51 bronze badges. What about devank gmailc. Gmail ignores the. I faced a very strange issue today devank As well gmil. If it is so, then your question belongs to tag amazon-sesyou could research your issue and edit the question appropriately or ask a new question.

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This means that we know the importance of having a good email list and continuing to build one. So, here are some easy tips to help you build a powerful email list. Making it informative yet creative at the same time can prove to be a hustle. The good news is that there are quite a few things that you can do in order to achieve that.

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gmail valid email address characters

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gmail valid email address characters

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gmail valid email address characters

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