I'm looking for a way to delete a mail from the web mail client when I delete the message in Outlook. This mainly applies to Junk Email.
It's because I don't want to have a messy mailbox when I have to use the web mail client. Right now, when I delete an email in Outlook, the original one still remains in my inbox on the web server, so after a couple of months I have a real mess in my inbox.
Is there any way to also delete these messages from the server from within Outlook?
When you are using a POP3 account with the option to leave a copy on the server, you also have the option to remove the message from the server when you delete it from your Deleted Items folder.
While not mentioned explicitly, this also applies to when you empty the Junk Email folder.
Outlook 2016, Outlook 2019, Outlook 2021, and Outlook 365
File-> Account Settings-> Account Settings…-> select your POP3 account-> button Change…-> option: Remove from server when deleted from Deleted Items
Outlook 2013 and Outlook 2016 (MSI)
File-> Account Settings-> Account Settings…-> select your POP3 account-> button Change…-> button More Settings…-> tab Advanced-> option: Remove from server when deleted from ‘Deleted Items’
The option to remove deleted messages from the server also applies
to the Junk E-mail folder.
Automatically deleted during next Send/Receive
After you have selected this option, right click the Deleted Items folder or the Junk Email folder and choose “Empty ‘Deleted Items’ folder” or “Empty ‘Junk E-mail’ folder” or simply “Empty Folder”. The exact wording depends on your Outlook version and the folder name.
At the next send/receive interval, the deleted messages will be removed from the server as well.
Extra Tip: If you can already filter your email on server level, then Outlook won’t have to download Junk Email at all. For more details on this method see; Don’t download Junk Email.