Email not syncing

Yes, I have confirmed server settings and cleared cache on several occasions. I've forced sync and toggled my connection many times. The issue is with BOTH my wife's email and mine, so it has to be account related, not phone related. I also deleted the email app and reinstalled it with no improvement. It almost appears as if the account is being throttled. I last synced at 7:04 A (nearly 2.5 hrs. ago) and that happened on its own, NOT forced. My wife's email last synced at 6:57A and that was also NOT forced.

Thank you for letting me know, @user_d713vi! Sorry to hear the steps you've taken so far have not worked. This strongly suggests the problem is not with your individual phones, the email app settings (since you've checked them and re-added the accounts), or your local network. The common factor is our mail server itself, and your suspicion is very likely correct based on recent reports from other Xfinity users. Here is a focused, advanced troubleshooting plan, targeting the known Xfinity-specific issues that cause exactly this problem:

Advanced Xfinity Account Security Checks
This step is frequently required by us for third-party email clients (which includes the built-in mail apps on your phones) and is the most common fix when the mobile app stops syncing for multiple users at once.

1. Check/Toggle Third-Party Access Security
We have a security setting that can get unexpectedly disabled, which prevents any outside mail app from communicating correctly. Since it's server-side, it affects all your devices.

- Log in to your Xfinity Email account through a web browser (not the mobile app).

-In the top-right corner, click the Gear Icon (Settings).

- Select Settings.

- Navigate to the Security tab.

- Look for a section called Third Party Access Security or something similar.

- Ensure the box that Allows third-party programs access to your Xfinity Email is CHECKED.

- Crucial Step: Even if it is checked, uncheck it, click save, then check it again, and click save. This forces a server reset of the authorization token for your account.

- Repeat this process for your wife's account.

2. Check for App Passwords (If using 2FA)
If either you or your wife have Two-Factor Authentication (2FA) enabled on your Xfinity accounts, the mobile email app will likely be blocked. You must generate a unique, one-time App Password for the mobile app to use instead of your main Xfinity password.

- Log in to your main Xfinity account (not just webmail) on the website.

- Go to the Security or Account Settings section.

- Look for Two-Step Verification or 2FA.

- Find the option to Generate App Password.

- Generate a new password and use this new, unique password when setting up the email account on your phone's mail app (replace your normal Xfinity password with this App Password).

Final Re-Setup (Using the App Password if needed)
After checking/toggling the Third-Party Access Security setting (Step 1), the final step to clear a "throttling" or block issue is a clean re-authentication.

1. Delete the Xfinity email account from your mobile app.

2. Re-add the Xfinity email account to the mobile app.

- Use your main Xfinity password, OR

- Use the App Password if you have 2FA enabled.

3. Ensure the settings are still IMAP Port 993 (Incoming) and SMTP Port 465 or 587 (Outgoing) with SSL/TLS encryption.

Given the widespread nature of this issue for Xfinity users, performing the Third-Party Access Security toggle (Step 1) is the most likely solution. Please let us know if that helps!

Yesterday, I UNCHECKED the Third-Party Access Security setting. I was looking for solutions and did not completely understand the setting so I thought that I would uncheck to see if it made a difference. I just rechecked it this AM and to be sure, I unchecked and rechecked again. I uninstalled the email app and I'm in the process of reinstalling. Currently stuck on "checking incoming server settings..."  Waiting, waiting...

@user_d713vi - That sequence of events — unchecking, rechecking/toggling the Third-Party Access Security setting, and then getting stuck on "checking incoming server settings..." — is a classic sign that the server is now requiring a fresh, secure connection but is getting held up during the handshake. You did exactly the right thing by toggling the Third-Party Access setting, as unchecking it completely disabled access for all mobile apps. Rechecking it should re-enable access, but the server is likely confused by the old connection attempts. Here is a focused plan to address the "stuck on checking incoming server settings" issue, which almost always comes down to a small, critical detail in the setup:

Resolve the "Stuck on Checking" Error

1. The Critical Port Check (Incoming and Outgoing)
Even though you checked them before, when an account gets stuck during setup, it's often because the app is defaulting to an insecure or incorrect port that Xfinity no longer accepts. Ensure your mobile app is using the following ports manually:

- Incoming Server (IMAP): imap.comcast.net

- Port: 993

- Security: SSL/TLS (This is crucial.)

- Outgoing Server (SMTP): smtp.comcast.net

- Port: 465 or 587 (Try 465 first, but 587 is also a common recommendation for mobile devices.)

- Security: SSL/TLS (This is also crucial.)

During the re-installation process, do not select a simple "Xfinity" or "Comcast" auto-setup option. Select "Other" or "Manual Setup" so you can input these settings specifically.

2. Disconnect and Re-Connect Cellular/Wi-Fi
Sometimes, the mobile provider or local Wi-Fi network's security settings can briefly interfere with the initial authentication handshake.

- Stop the current attempt to set up the email account.

- If you are on Wi-Fi, turn Wi-Fi OFF and try the setup again using cellular data (LTE/5G).

- If you are on cellular data, try the setup again using a different, reliable Wi-Fi network (like a friend's house or a public Wi-Fi spot) or simply toggle cellular data OFF and back ON.

3. Change Your Password (The Hard Reset)
Since the issue is affecting two accounts and is now preventing setup even after the correct server-side setting was toggled, the final server-side fix is often a password reset. This forces our server to invalidate all old security tokens and issue a brand new one.

- Log into the Xfinity website (for your account) and change the password.

- Log into the Xfinity website (for your wife's account) and change the password.

- Immediately go back to your email app and try to set up the account again using the newly created password.

This combination of (1) Manual Port Entry and (3) Password Reset should clear any lingering security block that occurred when you initially unchecked the Third-Party Access box.

Can you confirm if you are able to access the manual setup screen in your email app to ensure the ports are set to IMAP 993/SSL and SMTP 465 or 587/SSL?

Same issue with us. Two separate phones, with one household account. This just started a couple of days ago. Even our PC's MS Outlook will show "send/recieve" error, but eventually comes through. I tried the above steps (except deleting and reinstalling the app). Did not work.