Sending, receiving, and organizing email in Outlook.com
Hi, Howard Flowers
I understand how frustrating it is to have October emails missing while your outgoing messages still reach people. Before changing more settings, I’d narrow down whether this is a display problem or a delivery problem.
Here are some suggestions you can try:
Open your mailbox in a different browser and compare it with the app you normally use. If October messages appear there, focus on the original browser or app rather than changing mailbox settings. If you use Firefox, temporarily disable its add-ons, since certain add-ons can prevent the inbox from loading.
If you also check email through an older mail program, check whether it uses POP. It is recommended that you enable Leave a copy of messages on the server in that program. Without this setting, it can download messages and remove the server copies, leaving them unavailable on other devices.
Ask someone whose October email is missing whether they received a delivery failure message. Share only the error code and explanation here, with personal details removed. That message usually identifies the delivery problem and gives us a more specific next step.