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Indeed
in.indeed.com โ€บ career guide โ€บ career development โ€บ what is the correct format of an email address? (with examples)
What Is The Correct Format Of An Email Address? (With Examples)
February 13, 2024 - The correct format of an email address can ensure the email is easy to read and remember. One of the most common formats is [email protected], but many other formats are also entirely acceptable, such as [email protected].

identifier of the destination where email messages are delivered

An email address identifies an email box to which messages are delivered. While early messaging systems used a variety of formats for addressing, today, email addresses follow a set of specific rules โ€ฆ Wikipedia
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Wikipedia
en.wikipedia.org โ€บ wiki โ€บ Email_address
Email address - Wikipedia
1 week ago - An email address consists of two ... up the mail exchange IP address. The general format of an email address is local-part@domain, e.g. jsmith@[192.168.1.2], [email protected]....
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What is a Professional email address?
A professional email address is the email address, used for business communications that is based on your custom domain. In other words, a professional email address is one that has your business name in it, in the form of a domain name.
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zoho.com
zoho.com โ€บ mail โ€บ how-to โ€บ choose-a-professional-email-address.html
How to create a professional email address (+examples) | Zoho Mail
What are the benefits of a professional email address?
A Professional email address provides you with the following benefits: Branding Builds trust Authenticity Reliability Ease of recalling Better deliverability and reputation
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zoho.com
zoho.com โ€บ mail โ€บ how-to โ€บ choose-a-professional-email-address.html
How to create a professional email address (+examples) | Zoho Mail
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ZeroBounce
zerobounce.net โ€บ zerobounce - email validation home โ€บ email address format and how to use it right
Email Address Format and How to Use it Right - ZeroBounce Blog
July 25, 2025 - For example, if youโ€™re emailing โ€œ[email protected],โ€ it first inquires if the username โ€œjohnsmithโ€ is valid on the Gmail domain. If the email address is invalid or does not follow the correct email format, the message will bounce as there is no destination available.
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Xmatters
help.xmatters.com โ€บ ondemand โ€บ trial โ€บ 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. The prefix appears to the left of the @ symbol. The domain appears to the right of the @ symbol. For example, in the address [email protected], "example" is the email prefix, and "mail.com" is ...
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FullEnrich
fullenrich.com โ€บ content โ€บ email-address-format
Email Address Format: A Comprehensive Guide
These services often use a standardized format, such as: ... Catch-all email addresses are used to receive emails sent to non-existent email addresses on a domain. For example, if a user sends an email to [email protected], the catch-all ...
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Spark Mail
sparkmailapp.com โ€บ blog โ€บ create-professional-email-address-format-examples
How to create a professional email address
The most standard and recommended form of a professional email address is of course the [email protected] format. But there are some other ways you can get a professional email address, such as: ... You can also use an underscore ...
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Zoho
zoho.com โ€บ mail โ€บ how-to โ€บ choose-a-professional-email-address.html
How to create a professional email address (+examples) | Zoho Mail
May 1, 2021 - In an organization, even if there are multiple people with the same first names, the possibility of the same last name is much less and hence makes the user and the email address connection less ambiguous. This format is suitable for organizations of all sizes.
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83

John Doe <[email protected]> โ†’ what do you call the whole thing?

It's called a mailbox, as specified in RFC 5322 on page 45:

3.4. Address Specification

Addresses occur in several message header fields to indicate senders and recipients of messages. An address may either be an individual mailbox, or a group of mailboxes.

Normally, a mailbox is composed of two parts: (1) an optional display name that indicates the name of the recipient (which can be a person or a system) that could be displayed to the user of a mail application, and (2) an addr-spec address enclosed in angle brackets ("<" and ">"). There is an alternate simple form of a mailbox where the addr-spec address appears alone, without the recipient's name or the angle brackets. The Internet addr-spec address is described in section 3.4.1.

Source 3.4. Address Specification

See also Appendix A.1.2. Different Types of Mailboxes

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51

It is in the RFC5322, you just missed it:

address         =   mailbox / group
mailbox         =   name-addr / addr-spec
name-addr       =   [display-name] angle-addr
angle-addr      =   [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr
group           =   display-name ":" [group-list] ";" [CFWS]
display-name    =   phrase
mailbox-list    =   (mailbox *("," mailbox)) / obs-mbox-list
address-list    =   (address *("," address)) / obs-addr-list
group-list      =   mailbox-list / CFWS / obs-group-list

Let's break this down.

address either a mailbox or a group. A mailbox is a name-addr or addr-spec.

This name-addr is the format you're asking about: there is an optional display-name (it's optional because it is defined with square brackets) followed by the angle-addr, which itself is an addr-spec in angle brackets with optional foldable space CFWS on both sides of it (defined further in the section 3.2.2), or an obsolete address format obs-angle-addr.

A whole section 3.4.1 is dedicated to the description of addr-spec format.

So, in conclusion:

  • John Doe <[email protected]> is a name-addr, which is a variant of mailbox, which is a variant of address.
  • John Doe is a display-name
  • <[email protected]> is an angle-addr
  • [email protected] is an addr-spec
  • john is a local-part
  • example.com is a domain.
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Usebouncer
usebouncer.com โ€บ home โ€บ blog โ€บ email marketing โ€บ what is the correct email address format?
Email Address Format: 2025 Guide for Email Marketers
March 11, 2025 - For example, in the email address โ€œ[email protected],โ€ โ€œinfoโ€ represents the local part, โ€œ@โ€ separates the local part and domain name, then is the dot, and โ€œbouncerโ€ is the domain name.
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Vitanur
vitamail.vitanur.com โ€บ blogs โ€บ what-is-valid-email-address-format
What is a Valid Email Address Format? (Examples + Validation Guide 2025)
The syntax of a valid email address is "local-part@domain", where the local part is the part before the "@" symbol and the domain part is the part after the "@" symbol.
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Clearout
clearout.io โ€บ clearout: bulk email validation & email verification service | email verifier, email finder and email tester โ€บ what is a valid email address format?
What is a Valid Email Address Format - Clearout
March 13, 2025 - Find out what the rules for the email address format are. Learn the rules behind setting & formatting your email address, from special characters to words that might cause issues.
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WhoAPI
whoapi.com โ€บ home โ€บ understanding valid email address formats: a short guide
Understanding Valid Email Address Formats: A Short Guide - WhoAPI Inc.
October 15, 2025 - Special Characters: Certain special characters, such as periods (.), underscores (_), and hyphens (-), are often permitted within the local part. For example, โ€œ[email protected]โ€ and โ€œ[email protected]โ€ are both valid.
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VerifiedEmail
verified.email โ€บ valid email address format
Valid Email Address Format: Rules, Examples, and Mistakes
Domain name. This refers to the userโ€™s mail server or email service host, such as gmail.com or yahoo.com. An example of a correct or valid address format is [email protected].
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Sendbridge
sendbridge.com โ€บ home โ€บ email deliverability โ€บ what is a valid email address format
What is a Valid Email Address Format
September 16, 2025 - | | [email protected] | Consecutive periods in the username. | | [email protected] | Consecutive periods in the domain name. | An email address's validity isn't just about its structure.
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Reddit
reddit.com โ€บ r/sysadmin โ€บ email address format
r/sysadmin on Reddit: Email Address Format
April 8, 2022 -

I am switching over the company I work for to a new email system. We are switching from a local company that we have used for over 20 years to Googleโ€™s Gmail.

We planned on changing the email address formats from a firstname and first initial of last name format ([email protected]) to a [email protected] โ€ฆ that is until the CEO decided that we needed to discuss it more.

His concerns were privacy, and that the shorter the better because when handing it out, itโ€™s very hard to hand out emails already let alone bigger ones rather than shorter. I understand his views about it, but wanted to see what you all thought about this.

We are going to meet again in 3 days and discuss what way we should go. What are your thoughts on this? What format do you prefer and why? Also if you had a choice of the two I presented what would you prefer and why?

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Usebouncer
usebouncer.com โ€บ home โ€บ blog โ€บ what is the outlook email address format: a detailed guide
What is the Outlook Email Address Format: A Detailed Guide
July 24, 2025 - Examples also include addresses ending with hotmail.com or live.com, which match Microsoftโ€™s mail services. The correct format for email addresses is [email protected]. It includes a local part (username) and a domain, with options like ...
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No2bounce
no2bounce.com โ€บ blog โ€บ the-complete-guide-to-correct-email-address-format
Guide to Correct Email Address Format | Expert Tips 2025
July 28, 2025 - This portion is sometimes called the email id format or email address parts. Usage: It can contain letters, numbers, and certain allowed special characters. Example: In the gmail email address format, the local part could be something like john.doe.
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GMass
gmass.co โ€บ blog โ€บ professional-email-address
The 10 Best Professional Email Address Options Ranked (and 10 Worst)
November 27, 2024 - Examples: [email protected], [email protected] ยท Using casual or conversational phrases in your email address feels unprofessional. It doesnโ€™t reflect the seriousness of business communication. Itโ€™s better to stick to formats that establish authority.