I'm not receiving emails from a specific sender

Question

I'm not receiving emails from a specific sender

Yaeweon Shim 0

Hello,

I'm not receiving emails from a specific sender. I tried using my Gmail account, and I received the email without any issues. It seems the problem is not with the sender but with my Hotmail account.

I have already checked my Junk folder, storage, and inbox rules. I also added the sender to my Safe Senders list, Safe Senders and Domains, and my Contacts, but I still cannot receive any emails from them.

I don't know what else I can do. Could you please help me resolve this issue?

Thank you.

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1 answer

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Answer 1

Jeronimo Fuerte 44,575 Independent Advisor

Sorry to hear that you’re having trouble with this. Receiving the message in Gmail does not completely rule out a sender-side issue, because Outlook.com applies its own filtering based on the sender’s domain, authentication, and mail-server reputation.

Please let me know whether the sender receives a non-delivery report and, if so, share the exact error code while removing any personal information.

Since you have already checked your storage, rules, Junk folder, and Safe Senders list, the message may be getting rejected before it reaches your mailbox. A Safe Senders entry cannot override a server-level rejection. Microsoft advises the sender or their email administrator to use Sender Support for Outlook.com to investigate their domain/IP reputation and email authentication.

https://support.microsoft.com/outlook/sender-support-in-outlook-com

Yaeweon Shim 0 Reputation points

2026-07-31T05:49:49.0733333+00:00

The problem is that they are a large, well-known company. They probably won’t investigate this issue just for me and will simply blame it on my mailbox not having enough storage..
Jeronimo Fuerte 44,575 Reputation points Independent Advisor

2026-08-01T00:02:28.0066667+00:00

Thank you for the clarification. I understand that contacting a large company’s email administrator may be difficult. However, the company being large and well known does not completely rule out a sender-side delivery issue. Large organizations often use several outgoing mail servers or third-party services, and the specific IP address or system sending these messages could be affected even though other company emails work normally. Outlook.com evaluates factors such as the sending IP, domain, authentication, message content, and sender reputation.

If your mailbox still has available storage and you are receiving messages from other senders, insufficient storage is unlikely to explain why only this sender is affected.

You can ask the company’s customer support team to perform a simple delivery check. They should confirm whether the message was accepted by Outlook.com or whether their system generated a non-delivery report.