There are a few possible reasons why your emails might be going straight to the delete folder and being marked as read. Here are some things to check:
- Rules: Make sure that you don't have any rules set up that are automatically moving or deleting your emails. You can check your rules in Outlook by going to File > Manage Rules & Alerts.
- Junk mail filter: It's possible that your junk mail filter is too aggressive and is moving legitimate emails to the delete folder. You can check your junk mail filter settings in Outlook by going to Home > Junk > Junk E-mail Options.
- Malware: It's also possible that your computer is infected with malware that is messing with your email. You can run a malware scan to check for any infections.
Here are some additional things that could help you:
- Restart Outlook. Sometimes a simple restart can fix minor glitches.
- Create a new Outlook profile. If you've checked all of the above and you're still having problems, you can try creating a new Outlook profile. This will create a new set of settings and preferences, which may fix the problem. To create a new Outlook profile, go to Control Panel > Mail > Show Profiles. Click Add and follow the instructions on the screen.
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Kindest regards,
Leon Pavesic
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So I was having a similar issue. I use Outlook a lot and haven't noticed this before until recently. My wife sent me multiple emails and I kept telling her I didn't receive them until she showed me the email in her mailbox. I then started a search that got me here after reviewing all of the rules I had set in my mail for someone who signed up for many articles and communities like myself, imagine the number of rules I had to review 
.
Anyway, I found the problem to be that her contact or email was added to a blocked list on my iPhone mail settings (please no one should show her this thread 
/babe I didn't block your mail please).
Note: I am NOT using Outlook app on my iPhone, if this is your case.
Go to Settings on your iPhone or Apple Device.
Settings > Mail > Blocked (You will see a list of email addresses that are blocked). Remove the senders' email from the list.
Until you remove the email from this settings it will keep moving the email to the deleted folder. If you have other devices other than iPhone, try the same checks.
I hope this helps someone out there 