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Wire_nerd21
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Tuesday, March 10th, 2026 10:57 PM

E-mail issues with Apple Mail on Macbook

I’m trying to help my wife with a recent issue with e-mail on her MacBook. For context, her MacBook is a 2019 model running MacOS Sonoma 14.8.4 and her Apple Mail app is version 16.0. She has a Comcast e-mail account. We recently did some updates on her machine, and since then, she receives her incoming e-mails properly, but when she tries to send an e-mail, she gets a pop-up with a message that says “Cannot send message using the server Comcast” and the Apple Mail “Connection Doctor” advises that “Trying to log into this SMTP account failed. Verify that the user name and password are correct.” I’ve done that, and read several of the articles on the Xfinity site about setting port settings, etc. but I cannot find any place in the account setup screen to check or change these settings. When she logs in directly to the Xfinity e-mail page, she can send messages without issue, so I’m concluding that maybe something in one of the updates “broke” the Apple Mail app, at least as far as using with the Comcast server is concerned. Any assistance? Thank you!

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18 days ago

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XfinityMartyR

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19 days ago

 

Wire_nerd21 Thank you for reaching out! Have you tried toggling off and on the access to third-party email programs option?
 

 

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Wire_nerd21

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@XfinityMartyR​ 

I had not spotted that particular article, thank you for sending the link! I’ll give that a try.

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18 days ago

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XfinityJeffB

Official Employee

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221 Messages

If that article helps you, please let us know here. If you need further assistance, we are here and always happy to help. 

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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18 days ago

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Wire_nerd21

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@XfinityJeffB​ We tried turning 3rd party app access off and back on as you suggested. Before doing this, she could see incoming e-mails but not send e-mails. Now, after the turn off, turn back on, she can neither send or receive e-mails. But thanks for the suggestion.

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18 days ago

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XfinityJeffB

Official Employee

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221 Messages

That's disappointing. Ok then we need to dig deeper. 

If you would, send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you. 

How to Send Us a Direct Message:

  1. Click "Sign In" if necessary.
  2. Click the "Direct Messaging" icon or visit Xfinity Direct Messaging.
  3. Click the "New message" (pencil and paper) icon.
  4. In the "To:" line, type "Xfinity Support".
  5. As you type, a drop-down list will appear. Select "Xfinity Support" from that list.
  6. An "Xfinity Support" graphic will replace the "To:" line.
  7. Type your message in the text area near the bottom of the window.
  8. Press Enter to send it.

For an example of how to send us a Direct Message, check out this link.

https://forums.xfinity.com/conversations/email/cant-create-a-new-email-address/605e52b726aa974d6303…

 

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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18 days ago

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Wire_nerd21

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I’m sorry, but I cannot find a “direct messaging” icon on ANY of the Xfinity pages, even after logging in. Can you perhaps send me a link to a specific page from which I should start? Thanks!

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18 days ago

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