Why are some emails coming to me delayed

Support Personnel - 

 

I am trying to find out why emails to me from MailChimp are not coming into my email in a timely manner.  It appears to me that the deterioration in deliver service has been on the Xfinity/Comcast end - delivery has gone from 1-2 minutes in Aug./Sept. to 10-54 hours in Oct./Nov.

 

If this is happening to me it is probably happening to other people. Please get back to me as soon as possible with how this problem is going to be resolved on your end.  

 

The most recent example is:

Sender [Edited: "Personal Information"]

Sent to - [Edited: "Personal Information"]

 

Date and time the email was sent by MailChimp - Friday, 11/1/2024  6:00 am - I verified this by using the Forward function and this is the date that show up as the original (not the date that shows on the email in my inbox.  I am also involved in putting this email together in MailChimp and know that this is the date and time scheduled for it to go out.  This email was 233.0 KB.

 

Date and time the email was received in my in box - Sunday, 11/3/2024 11:56 am.  This is 54 hours after it was originally sent.

 

Earlier Examples:

This problem has been going on since October 2024.  Here are other example of delivery of similar MailChimp emails over the past several months:

 

October #1 - Sent 10/16/2024 at 6:00 am; Received 10/16/2024 at 3:50 pm, Size 96.6 KB - this one took 10 hours to deliver to my inbox.

 

October #2 - Sent 10/1/2024 at 12:00 pm; Received 10/2/2024 at 3:17 am; Size 220 KB - this one took 15 hours to deliver to my inbox.

 

September - Sent 9/1/2024 at 11:59 am; Received 9/1/2024 at 12:01 pm; Size 221.7 KB - this one took 2 minutes to deliver to my inbox.

 

August - Sent 8/7/2024 at 9:26 pm; Received 8/7/2024 at 9:27 pm; Size 136.7 - this one took 1 minute to deliver to my inbox.

 

Please don't write this off as a MailChimp problem or an email size problem.  Analysis would say neither of these is the issue.  Also, don't conclude this is a problem with my account as no changes have been made to any aspects of my account over this time period.

 

Thank you.