Not receiving emails from some senders

I'm having the same problem and the email is very laggy while typing

@ROC88 that sounds more like an issue with your computer. Typing latency has nothing to do with the email platform. 

Rotten and useless answer from Comcast employee.  I'm not receiving emails either from specific senders.  Looks like others on this forum are having the same issue.  Very frustrating answer.

I am also having this issue with our business email, using office 365, not being able to send to comcast.net email addresses. I sent you a PM with details. Thanks for any insight you might be able to provide.

All of my #slow,  #laggy,  #pagenot loading  issues are only occuring on the comcast/xfinity web site and not anywhere else

I am having the same issue and not receiving messages from certain senders.  Please help.

I am not receiving emails consistently and the sender is receiving "un-deliverable' message:  resimta-ch2-39v.sys.comcast.net rejected your message.   Some come in, but a lot do not.  In addition, I have experience occasional outgoing emails being un-deliverable.  My gmail account it fine.

I am no longer receiving hotel receipts as an email when I travel.  I looked at my history and they worked fine up to August 2020.  I get other emails from that hotel server, but these items come as [Edited: "Personal Information"] and are stuck somewhere. I do not have any spam or other filters on.  I also get plenty of receipts from other service providers.  Where do we go to see if it is being filtered at a higher layer in the server?