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brinyside
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Sunday, February 22nd, 2026 9:03 PM

Emails I send to myself and others with comcast addresses going to Junk

Emails I send to myself from any of my devices are going to my Junk folder in MacMail and also the Spam folder on the xfinity website. This started several months ago and happens when:

1) sending from iPhone 16 Pro

2) sending from my older iMac (Catalina 10.15.8)

3) sending from my 2025 MacBook Air (Sequoia)

This happens with simple text emails and when sending attachments - makes no difference. If it matters, the emails appear in the brown font color in the Junk folder, while others in that window appear in a mix of brown and black font color.

When I log in to xfinity and compose/send within the browser interface, the emails go to the xfinity inbox correctly. However, they continue to go to the Junk folder on my personal devices.

I've spent hours with both xfinity support and Apple support, to no avail, adjusting and resetting Junk mail settings, whitelisting my email address on both the xfinity site and in MacMail, etc. etc. in all permutations.  The "Not Junk" button does not work to train MacMail. I've been hitting it for months. If the email is being marked as Junk by the server, then the Junk mail training in MacMail may not work.

I've also created a Test user account on my laptop, with untouched (default) MacMail settings. I've deleted all previous Rules and Blocks in MacMail. I have also whitelisted my email in my xfinity settings.

In addition, and most importantly, my emails are going to the Junk folders of colleagues who have comcast.net addresses. I feel like there is a server-side filter or setting that is causing this. I have done a soft reset of my router.

Please, can anyone help me? This is creating serious problems for me with my work. Thank you.

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17 hours ago

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XfinityRichard

Official Employee

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3.2K Messages

2 months ago

Hi there, @brinyside Thank you so much for taking the time to reach out today. I'm truly sorry for the trouble you are experiencing with your email service. Since it's been a few days since you last posted, are you still having trouble with your email service?-Richard

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brinyside

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11 Messages

Yes, it is still happening when I send mail to myself when on my home wi-fi network. I’ve been doing more testing and discovered that emails are delivered correctly to my inbox when I use a cellular connection. My modem is a Arris SB8200. 

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2 months ago

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brinyside

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11 Messages

Is this still an approved modem for my plan? Should I call to have it reprovisioned? I’ve already done a few resets on my end.

(edited)

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2 months ago

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XfinityKei

Official Employee

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2.4K Messages

@brinyside Thanks for getting back to us. Certainly sounds like a forwarding setting somewhere. Have you tried deleting all the settings for your email clients and set them up again for us? 

Can you please direct message me your first and last name along with your full service address so that I can assist?
Here's the detailed steps to direct message us:
• Click "Sign In" if necessary
• Click the "Direct Message” icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message.

(edited)

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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2 months ago

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brinyside

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Yes, at some point in the troubleshooting I deleted the Comcast account from my laptop and then set it up again from scratch without changing any default settings. I will DM you now.

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2 months ago

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XfinityRichard

Official Employee

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3.2K Messages

2 months ago

It was a pleasure, @brinyside working with you in private regarding your email concerns. We'll always be here if you need us in the future. We do appreciate you and your business.-Richard

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user_wr47iq

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2 Messages

19 days ago

I am having the same problem and have tried all the same things. How was this problem fixed?

thanks Lesley

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brinyside

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11 Messages

Sadly, it was fixed for a while, but has since reverted back to the same behavior. I think I went into settings via the xfinity mail browser interface and toggled some junk mail/privacy settings, but I don’t remember exactly. There was not a definitive fix. I feel like it just randomly worked for a while. My emails also go to the Junk folders of some of my contacts. Extremely frustrating, but I really don’t want to give up an email address I’ve been using for 25 years. Sorry I can’t be of more help. 

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17 days ago

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XfinityDuron

Official Employee

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714 Messages

Hello @user_wr47iq, did you still have your ongoing email issues at this time?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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17 days ago

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user_wr47iq

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2 Messages

Yes I am still having trouble. 

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17 days ago

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XfinityVianney

Official Employee

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2.6K Messages

 

user_wr47iq, thanks for letting us know. You stated you have similar issues to the OP. Does your email also function with no issues when using our website directly? Can you tell me about any troubleshooting you've tried so far? 

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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17 days ago

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brinyside

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11 Messages

I can tell you when I send emails to myself from the xfnity website via a browser, the emails go to my inbox. However, when I use an email client, in my case MacMail, my emails go to Junk.

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16 days ago

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user_wx9e7r

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5 Messages

2 days ago

I also have the same problem.  It started suddenly about a month ago.  I have my Mac Mail set up to automatically Bcc copies of all outgoing emails to me, and suddenly they started going to my junk file - both in Xfinity mail and in my Mac Mail.  When I surveyed several friends who I correspond with regularly, those with gmail or other email programs (eg aol) all continued to receive my emails in their Inbox.  BUT for everyone with a comcast.net email address, my emails all go to their junk file.  This confirms to me this is a COMCAST issue (ie not something to do with my Mac mail.)  

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brinyside

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11 Messages

@user_wx9e7r​  Next step is to get a different IP address assigned, by disconnecting etc. Tech support said it should help, but maybe not permanently. Also said the problem should go away when my account is transitioned to Yahoo mail processing. We’ll see..

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2 days ago

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brinyside

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11 Messages

2 days ago

Yes, I’ve tested with a different email client and same thing. 

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user_wx9e7r

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5 Messages

2 days ago

I have just done some additional "testing" (which I think you have already done.) 

If I compose an email using the Xfinity mail webpage, and send it to myself, it arrives correctly in my Mac Mail Inbox.  

If I compose an email using my Mac Mail and send it to myself or anyone with a comcast.net address, it goes to my/their Junk folder. 

If I forward any email from my Mac Mail Inbox to myself or anyone with a comcast.net address, it goes to my/their Junk folder.

So anything sent from my comcast.net address in Mac Mail, to any comcast.net address, goes to the Junk folder (mine or theirs.)

Since you already spent time with Apple - is there any possibility that Apple Mac Mail is preventing proper comcast to comcast email communication ???

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brinyside

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11 Messages

I don't believe this is an Apple issue. I did call Apple, but just as I started to explain the issue I realized I needed to test another email client and compare results before continuing with them. I downloaded and installed another email client, one I've never used before. Set it up and sent emails. Same issue. I think somehow my IP address got flagged. I do not abuse it. One a week I have to send an email to 40 people using BCC, but other than that, nothing out of the ordinary.

In my xfinity email settings, I've enabled "allow 3rd party email clients.. ", so there isn't much else I can do. I've just changed my IP address. I will do some testing and try to post the results here.

(edited)

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2 days ago

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brinyside

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11 Messages

Ok, I just finished setting everything back up and my email appears to be working correctly for now with the new IP address. Emails I send to myself are going to my inbox. I'm assuming this will hold true with email I send to others with comcast.net addresses that were going to Junk.

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2 days ago

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user_wx9e7r

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5 Messages

@brinyside​ I tried to change my IP address, but alas I was not able to do so.  

I found this on another xfinity thread:

"Comcast does not provide a way to change the IP address of its gateways, and they won't change it for you."  I rent my Gateway modem from Xfinity, so I'm guessing my only option would be to disconnect this one and take it to the Xfinity store and ask if they will just exchange it....

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2 days ago

user_wx9e7r

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5 Messages

18 hours ago

I went to the Xfinity store today (made an appointment on-line so I wouldn't have to wait around.) I rent my modem from Xfinity ie I do not own it. I handed them my current modem, and came home with a brand new one - no questions, no charges, latest technology. Once set up, I tried out my email. Everything is back to normal !!! :) :) :)

So if you rent from Xfinity and are having this problem, swapping out your modem is the quickest way to a new IP address and a solution. If you own your modem, then shutting down your modem for at least an hour, then powering up again may do the trick (as described below.) Google also has a lot of info on different ways to get a new IP address for your owned modem.

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