Learn how to request a read receipt in Outlook for desktop, web, and mobile to confirm when someone opens your email.
I don't use the web interface, but I just logged in and it is definitely in the home tab for me (first thing on the left). if you don't see it there, on the home tab all the way to the right there ...
To switch between inboxes, tap the Profile icon in the upper-right corner and choose an email address. Another option is to install the provider's app. Outlook and Yahoo have their own apps. This ...
The settings will automatically save, and the next time you delete an email, it will not show up the message. Make sure to test it out. Read: Email notification sound is not working. Cache is one of ...