Help me find e mail addresses

The part after the symbol domain is a domain name that represents the administrative realm for the mail box, e. When delivering email , an SMTP client, e. The local part of an email address has no significance for intermediate mail relay systems other than the final mailbox host. Email senders and intermediate relay systems must not assume it to be case-insensitive, since the final mailbox host may or may not treat it as such.

A single mailbox may receive mail for multiple email addresses, if configured by the administrator. Conversely, a single email address may be the alias to a distribution list to many mailboxes. Email aliases , electronic mailing lists , sub-addressing , and catch-all addresses, the latter being mailboxes that receive messages regardless of the local part, are common patterns for achieving a variety of delivery goals. The addresses found in the header fields of an email message are not directly used by mail exchanges to deliver the message.

An email message also contains a message envelope that contains the information for mail routing. While envelope and header addresses may be equal, forged email addresses are often seen in spam , phishing , and many other Internet-based scams. This has led to several initiatives which aim to make such forgeries easier to spot. Earlier forms of email addresses on other networks than the Internet included other notations, such as that required by X. The format of email addresses is local-part domain where the local part may be up to 64 octets long and the domain may have a maximum of octets.

The maximum total length of the local-part of an email address is 64 octets. This can be useful for tagging emails for sorting, see below, and for spam control. A local part is either a Dot-string or a Quoted-string; it cannot be a combination. 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 domain email administrator.

Technically all other local-parts are case-sensitive, therefore jsmith example.

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Despite the wide range of special characters which are technically valid, organisations, mail services, mail servers and mail clients in practice often do not accept all of them. For example, Windows Live Hotmail only allows creation of email addresses using alphanumerics, dot. This rule is known as the LDH rule letters, digits, hyphen. In addition, the domain may be an IP address literal, surrounded by square brackets [] , such as jsmith [ Internationalized domain names which are encoded to comply with the requirements for a hostname allow for presentation of non-ASCII domains.

Comments are allowed in the domain as well as in the local-part; for example, john.

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Of note for e-mail are. According to RFC 2. It is entirely up to the configuration of the mail server. Interpretation of the local part of an email address is dependent on the conventions and policies implemented in the mail server. For example, case sensitivity may distinguish mailboxes differing only in capitalization of characters of the local-part, although this is not very common.

Some mail services support a tag included in the local-part, such that the address is an alias to a prefix of the local part. RFC , [14] refers to this convention as sub-addressing , but it is also known as plus addressing , tagged addressing or mail extensions. The mailboxes may be accessed and managed by users with the Post Office Protocol POP or the Internet Message Access Protocol IMAP with email client software that runs on a personal computer, mobile device, or with webmail systems that render the messages on a screen or on paper printouts. The general format of an email address is local-part domain , and a specific example is jsmith example.

An address consists of two parts.

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The part before the symbol local-part identifies the name of a mailbox. This is often the username of the recipient, e. The part after the symbol domain is a domain name that represents the administrative realm for the mail box, e. When delivering email , an SMTP client, e. The local part of an email address has no significance for intermediate mail relay systems other than the final mailbox host. Email senders and intermediate relay systems must not assume it to be case-insensitive, since the final mailbox host may or may not treat it as such. A single mailbox may receive mail for multiple email addresses, if configured by the administrator.

Conversely, a single email address may be the alias to a distribution list to many mailboxes. Email aliases , electronic mailing lists , sub-addressing , and catch-all addresses, the latter being mailboxes that receive messages regardless of the local part, are common patterns for achieving a variety of delivery goals. The addresses found in the header fields of an email message are not directly used by mail exchanges to deliver the message.

An email message also contains a message envelope that contains the information for mail routing. While envelope and header addresses may be equal, forged email addresses are often seen in spam , phishing , and many other Internet-based scams. This has led to several initiatives which aim to make such forgeries easier to spot. Earlier forms of email addresses on other networks than the Internet included other notations, such as that required by X. The format of email addresses is local-part domain where the local part may be up to 64 octets long and the domain may have a maximum of octets.

The maximum total length of the local-part of an email address is 64 octets. This can be useful for tagging emails for sorting, see below, and for spam control. A local part is either a Dot-string or a Quoted-string; it cannot be a combination. 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 domain email administrator. Technically all other local-parts are case-sensitive, therefore jsmith example.

Everything You Need to Know About Email Addresses

Despite the wide range of special characters which are technically valid, organisations, mail services, mail servers and mail clients in practice often do not accept all of them. For example, Windows Live Hotmail only allows creation of email addresses using alphanumerics, dot. This rule is known as the LDH rule letters, digits, hyphen. In addition, the domain may be an IP address literal, surrounded by square brackets [] , such as jsmith [ Internationalized domain names which are encoded to comply with the requirements for a hostname allow for presentation of non-ASCII domains.

Comments are allowed in the domain as well as in the local-part; for example, john. Of note for e-mail are. According to RFC 2. Mail, and AOL all of which have made our list of best free email accounts, below. If you want to access your webmail from a mail app on your mobile device, rather than your desktop web browser, your webmail provider can use one of the email protocols described below.

Email protocols are the systems that actually retrieve your email for you. They can be used to fetch email client accounts on the internet, and fetch webmail accounts on a mobile app. Here are the three main types of email protocol your account can use. POP stands for "post office protocol," and is best suited for people who have just one email account and email client. POP3 is the latest version of this email protocol, and allows you to access email while offline. It therefore requires less internet bandwidth.

IMAP stands for "internet mail access protocol," and is one of the older email protocol available today. IMAP4 is considered the latest version, and unlike the POP protocol, you do not download your email to your offline email client. Instead, all your email stays online while you're accessing and managing it. IMAP is particularly useful for people who have more than one email account and access them from multiple devices or locations.

This protocol allows you to not only access your email over the internet from multiple devices, but also tasks, calendars, and contact information tethered to that email address. For this reason, it's particularly helpful to organizations whose employees share many types of information and collaborate remotely. Now, take a look at seven of the best free email service providers you can get your hands on today -- both webmail and email clients included. For each email service provider, we highlighted a unique feature to help you find the best fit.

Who should use it: anyone who already uses and loves the rest of Google's products. It might seem like an obvious top pick, but Gmail is just too versatile to not award the first slot. Gmail has the second-highest email provider market share behind Apple iPhone's native email app , according to Litmus Labs. And ironically, one of the reasons Gmail has become so popular is because of all the communication options in your inbox that don't involve email.

Gmail is an everyday email inbox you can sign up for by registering for a Google account. But it's built into Google Suite, a group of free apps that allow you to chat, video-conference, and share files with the people in your contact list.


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Google Hangouts, available from your inbox's left sidebar or the right -- you can customize how you inbox is displayed , lets you text and video chat with other Gmail users for the things that might not warrant an email message. Like most other email accounts today, Gmail also has an intuitive calendar where you can set meetings and reminders. Unlike other email accounts, you can use your Gmail address to log into and manage your YouTube account, as well as collaborate on shared documents and spreadsheets right from a cloud-based Google Drive. Offering a generous 15 GB of free email storage, Gmail does everything it can to make your inbox less chaotic, including advanced filters that automatically push emails into separate folders as they arrive.

And none of these functions costs a dime. America Online I feel nostalgic just typing those words has quietly kept up with today's standards for a good user experience. The classic AOL is now once again one of the best free email accounts available to you. Purchased by Verizon in , AOL delivers you email from its classic news-driven homepage, and comes with the contemporary spam filters and virus protection you'd expect from your email provider.

You can also send text and instant messages from specific windows in your email inbox. AOL does have something over Gmail, though: unlimited storage. Who should use it: people who use many different platforms to connect with others.

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