Email-Server-Protocols

All email providers have slightly unique SMTP and IMAP (or POP3) e-mail server settings. SMTP settings are used to define how email messages should be sent out – using outgoing server settings. IMAP and POP3 are designed for receiving messages or incoming settings. Below are lists of popular providers with their corresponding e-mail server settings. Use this guide to quickly reference settings that pertain to your desired server and setup.

IMAP vs POP vs SMTP

IMAP is used to retrieve messages from a mail server. The current IMAP protocol is called IMAP4rev1 and it generally listens on port 143 and uses 993 for a secure, or SSL, connection. POP is also a protocol used for the retrieval of messages but differs from IMAP in a major way. For example, when reading messages on a mobile device that utilizes IMAP, if the messages is removed, read or altered in any way the same result is displayed if you later decide to log in via a browser or other device. POP only allows the download of messages locally so if changes are made it isn’t reflected on the mail server. The default ports for POP are 110 and 995 for SSL.

SMTP is used for transmitting messages and port 25 or 587 is typically used, though some ISPs block port 25 to cut down on spam messages.

E-mail server settings

Listed below are e-mail server settings for popular providers. Use these e-mail server settings when entering in information for setting up email on client software like Microsoft Outlook or for a mobile device.

Gmail

Google

SMTP Server:

  • “smtp.gmail.com”
  • SSL port: “465”
  • StartTLS port: “587”

IMAP Server:

  • “imap.gmail.com”
  • SSL port: “993”

IMAP needs to be enabled via Gmail’s settings from within a browser before it will work in client software. These settings can be accessed here.

Enable-IMAP-in-Gmail

POP3 Server:

  • “pop.gmail.com”
  • SSL port: “995”

POP needs to be enabled from within Gmail’s settings here.

Enable-POP-in-Gmail

Yahoo! Mail

Yahoo!-Mail

SMTP Server:

  • “smtp.mail.yahoo.com”
  • SSL port: “465”

IMAP Server:

  • “imap.mail.yahoo.com”
  • SSL port: “993”

POP3 Server:

  • “pop.mail.yahoo.com”
  • SSL port: “995”

AT&T

ATT

SMTP Server:

  • “smtp.att.yahoo.com”
  • SSL port: “465”

IMAP Server:

  • “imap.att.yahoo.com”
  • SSL port: “993”

POP3 Server:

  • “pop.att.yahoo.com”
  • SSL port: “995”

Hotmail

Hotmail

SMTP Server:

  • “smtp.live.com”
  • StartTLS port: “587”

IMAP is not currently supported.

POP3 Server:

  • “pop3.live.com”
  • SSL port: “995”

Verizon

Verizon

SMTP Server:

  • outgoing.verizon.net
  • Port: “587”
  • SSL port: “465”

IMAP Server:

  • incoming.verizon.net

POP3 Server:

  • incoming.verizon.net
  • SSL port: “995”

Configure Outlook for e-mail

Upon first launch of Outlook 2010, the following prompt will guide you through an email setup. Choose to “Manually configure server settings or additional server types” so we can choose an above setting for a specific account.

Configure-Mail-Server-Settings-in-Outlook

Choose the top option of “Internet E-mail” to use an address that resides on an Internet server.

Connect-to-Internet-E-mail-in-Outlook

Begin entering a name and email address and then choose the incoming mail server type. Check above for the appropriate settings that fit your email server. We’ll be using Gmail for this example and we’ll want to use IMAP here.

Enter-Email-Settings-in-Outlook

Fill in the remaining information like the password and username.

Enter-User-Information-in-Outlook

Choose “More Settings…” before continuing so we can specify port numbers.

image

Under the “Outgoing Server,” check the box titled “My outgoing server (SMTP) requires authentication” and “Use same settings as my incoming mail server.”

SMTP-Requires-Authentication

From the “Advanced” tab, enter the settings that correspond to your email’s server settings. We’re using IMAP with Gmail so 993 is used for IMAP and 465 for SSL SMTP.

Advanced-Protocol-Settings-in-Outlook

OK out of any open prompts and then test the account settings to verify a successful setup.

Test-Account-Settings

Verify-Account-Settings

Conclusion

Regardless of the email provider you use, there are always settings that the server uses to authenticate the account before sending or receiving mail. Use these settings in client software like Outlook to set up an email account. If we’ve missed your e-mail settings above, please let us know in the comments and we’ll be sure to include it for your reference.

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