I work for an agency that sends out marketing emails for a client using Mailchimp software. Twice weekly for the past three years we have sent out bulk HTML emails to a list of 80,000+ with no issues. However, twice in the past month, my client has complained that, even a week after sending, he has not received the email in his personal Hotmail account; he has received the email in his primary Outlook desktop account.
I contacted Mailchimp to see if there was a problem delivering emails to this specific Hotmail account and this was their reply:
"I've dug into the subscriber activity within the account, as well as searched his specific address for that campaign using our advanced delivery search tools. It looks like the message was passed to the receiving domain and accepted as we would expect."
I have advised my client to check his junk folder and folder settings and it is clear that the email has not arrived.
Is there any reason that Outlook.com would be preventing emails from landing in his Hotmail inbox without sending a failed delivery message to the sender? My client is worried that this is a large-scale problem that is having an effect on sales.
Any help would be gratefully appreciated.
