How to Fix “Comcast Blocking Emails” Issue?

Comcast blocking email

As Comcast takes the security of users’ information seriously, sometimes it may block even the genuine emails from trusted senders. If you see any of your trusted senders’ emails being delivered to the spam or junk folder in your Comcast email account, it could be happening due to different reasons such as you have mistakenly added the email address of the sender to the blocked list, a filter in your Comcast email is directing the emails to other folders like Spam or Trash folder. In such a case, you can try overcoming the issue by following the information provided below.

Guide to Fix Comcast Blocking Emails Problem

  1. Check If the Sender is in the Block List

If you have mistakenly added a sender to the blocked list in your Comcast email account, you will not be able to receive the email from the sender to the Inbox folder. To unblock such a sender, you will need to follow these steps:

  • On a supported web browser on your computer, you will need to sign in to your Comcast email account.
  • Once you are logged into your account, you will need to go to the Preferences
  • In the Preferences section, go to the Email option and click on the Email filters
  • Then, you will need to locate the email address you wish to unblock and click on the Delete option next to it.
  • Doing so will delete the email address from the blocked list and you will again be able to receive emails to the inbox folder of your account.


  1. Make Sure You Have Not Marked the Email as Spam

If you ever mistakenly mark an email as spam in your Comcast email account, the future emails from the sender may also be considered as spam and might not get delivered to your Inbox folder. If you have a sender’s email marked as spam in your account, you can undo it by following the instructions provided below.

  • Open a web browser on your computer and sign in to your Comcast email account.
  • Once you signed in to your account, go to the Spam
  • In the Spam folder, you will need to find the legitimate email which was marked as spam by mistake.
  • Once you find the email, you will need to click on the Not Spam option from the toolbar. Doing so will unmark the message as spam and move it to the Inbox folder.
  • However, if you are unable to find the email in the Spam folder, it could be because it has been deleted.


  • Comcast deletes emails from the Spam folder automatically after seven days.
  • In case you are looking to turn off the Spam Filtering option, it will send all the email messages directly to your Inbox folder – including the ones that could be designated as spam.


  1. Check the Comcast Email Server Settings

If you access your Comcast email account using a third-party email client such as Outlook, Windows Live Mail, Apple Mail, or Mozilla Thunderbird, make sure you have configured your account with correct server settings. Incorrect server port value or name can cause different issues with your account including email blocking problem. Below are the correct Comcast Email server settings that you should use to configure your email account:


Incoming Mail Server Name:

Incoming Mail Server Port Number: 993 with SSL ON

If the Mail Client on which you are configuring your Comcast email account allows you to select an authentication method, make sure to select STARTTLS.

  • If Required: 143 with SSL ON

Outgoing Mail Server Name:

Outgoing Mail Server Port Number: 587 (SMTP)

  • If Required: 465 (SMTPS)

Encryption: TLS (use SSL if TLS isn’t shown.)

Authentication: Type in your Comcast username and password


Incoming Mail Server Name:

Incoming Mail Server Port Number: 995 (POP3 with SSL)

  • As Incoming Mail Server Port 110 is no longer supported by Comcast email, it is suggested to ensure that you use port 995. You can find this option in the Settings > Advanced Settings > or Preferences menu in your email program.


  1. Use Email Safe List

Another way to prevent emails in your Comcast email account from getting blocked it to add them to the Safe list. When you add the email address of a sender in the Email Safe List of your Comcast email account, the emails of the added sender are sent to the Inbox folder only. You can find the Email Safe List section in your Comcast email account by going to the Settings > Advanced Settings in Xfinity Connect.

NOTE: If you use the Email Safe List feature, you will only receive emails from the addresses you add to it. And, emails from the other addresses that are not included in the list will be rejected from getting into the Inbox folder.

So, these are the workarounds that will help you fix Comcast blocking emails in your account. You can speak with Comcast email expert by dialing toll free Comcast email customer support number to fix your account.

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