ATT Email SMTP Settings | Complete Guide

ATT email SMTP settiing

If you’re searching for ways to configure  ATT email SMTP settings, you have landed the right place. These settings include what server your email talks to when it’s coming in (the incoming mail server) and going out (the outgoing mail server). You’ve also got those technical details like port numbers and whether you should enable SSL or TLS for added security.

This article explains ATT email SMTP settings in a way that’s easy to understand, even if you’re not a tech person.

ATT email smtp setting

By the way, if you are only looking for “ATT email SMTP Settings,” then take it and move on; the rest can read through to learn the other stuff.

Why are ATT email SMTP settings required?

ATT email is a free service offered by ATT in collaboration with Yahoo Mail. It allows you to create an email address with either the “” or “” domain and offers 1TB of free storage.

Here’s a breakdown of ATT email:


  • 1TB of free storage
  • Access to your email on the web at or through an email app
  • Integration with other Currently features like news, sports, and weather

ATT email SMTP settings are required if you want to use an email client other than the web interface ( to send emails from your ATT email address.

An email client is a software program you install on your computer or mobile device that allows you to manage your email. Some popular email clients include Outlook, Thunderbird, Apple Mail, and Gmail (when configured to work with other email accounts).

Here’s why you need SMTP settings:

  • Sending Emails: The SMTP (Simple Mail Transfer Protocol) settings specify the server address and port number that your email client needs to use to connect to ATT’s email server and send your outgoing emails. Without these settings, your email client won’t know where to send your emails.
  • Authentication: The SMTP settings also typically include your username (your ATT email address) and password (or secure mail key) for authentication. This verifies that you are authorized to send emails from that address.

In short, ATT email SMTP settings are essential instructions your email client needs to follow to successfully send emails on your behalf.

SMTP Server:
SMTP Port: 465
SSL Required: Yes
Authentication: Yes
SMTP Username: Your ATT email address ([email protected])
SMTP Password: Your ATT Mail password

What are ATT POP & IMAP settings?

ATT POP and IMAP settings are configurations you’ll need to use an email client other than the web interface ( to access and manage your ATT email.

ATT POP Settings

POP Server:
POP Port: 995
Requires SSL: Yes
POP Username: Your ATT email address ([email protected])
POP Password: Your ATT Mail password

ATT IMAP Settings

IMAP Server:
IMAP Port: 993
Requires SSL: Yes
IMAP Username: Your ATT email address ([email protected])
IMAP Password: Your ATT Mail password

These settings are good for email addresses with any of these domains.


Steps to configure ATT email SMTP setting

Are you ready to set up your ATT email for seamless email management? Whether you’re using Gmail, AOL Mail, Yahoo Mail, or Outlook, configuring your ATT email SMTP settings is a straightforward process. 

In this guide, we’ll walk you through the steps using Gmail as an example. Follow along, and you’ll have your ATT email working with your preferred email client in no time!

Step 1: Go to Gmail settings and click on ‘Accounts’ and then click on ‘Add another email address’ 

ATT email smtp setting

Step 2: Then you will get a pop-up to add the ‘name’ and ‘email address’ details.

ATT email smtp setting

Step 3: Enter the details and click on ‘next step’. Fill in the required details and click on add account. 

ATT email smtp setting

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Common troubleshooting issues while configuring ATT email SMTP settings

What should I do if I can’t send emails through my ATT email SMTP settings?

First, ensure that your SMTP server settings are correct. Verify that the SMTP server is set to, the port is set to 465 or 587, and that SSL or TLS is enabled. Also, check your username and password for accuracy. If the issue persists, try restarting your email client and checking your internet connection.

Why am I receiving an authentication error when setting up the ATT email SMTP setting?

Authentication errors often occur due to incorrect login credentials. Double-check your email address and password. Ensure that you are using your full ATT email address (including the domain) and that caps lock is off. If you’ve recently changed your password, make sure you update it in your email client settings as well.

What can I do if my emails are stuck in the outbox and not being sent?

This issue can be caused by several factors. First, ensure that your SMTP settings are correct. Check your internet connection and try resending the emails. If they still don’t send, look for any error messages that might give more insight into the problem. Temporarily disabling your antivirus or firewall can also help identify if they are blocking the outgoing mail.

Why are my emails sent from ATT email SMTP marked as spam by recipients?

Emails can be marked as spam due to several reasons, including the content of the email, attachments, or your email address’s reputation. To reduce the likelihood of your emails being marked as spam, avoid using excessive links, attachments, or spammy language. Ensure your email address and domain are not blacklisted.

How can I resolve connection timeout errors when sending emails through ATT email SMTP?

Connection timeout errors are often related to network issues. Ensure that your internet connection is stable. Try changing the SMTP port from 465 to 587 or vice versa. If you’re using a VPN, try disconnecting it to see if that resolves the issue. Additionally, make sure your antivirus or firewall isn’t blocking the connection.

What steps should I take if I can’t receive emails in my ATT email account?

If you’re unable to receive emails, check your incoming mail server settings. For ATT email, the IMAP server should be with port 993 and SSL enabled, or the POP3 server should be with port 995 and SSL enabled. Also, ensure there’s enough storage space in your inbox and check your spam or junk folder for misplaced emails.

I keep getting an error message saying my username or password is incorrect, even though I know it’s right. What’s wrong?

There are two possibilities:

  • Regular Password vs. Secure Mail Key: ATT recommends using a secure mail key instead of your regular password for enhanced security. You might be entering your regular password instead of the secure mail key.
    • Solution: Generate a secure mail key in your ATT email settings online and use that in the password field when configuring your email client.
  • Typos: Double-check that you haven’t accidentally mistyped your username or secure mail key.
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