Below is the step to clean up the email message that older than a year on your webmail
- Go to your Inbox Folder
- Click on the Drop down icon to open the folder filter options
- Select Date "Older than a year" to filter email messages that are older than a year
- Click on "Select" > "All"
- On the Email management pane, click "Delete" to move the selected email item to the Trash folder.
- Go to Trash Folder
- Click on "Select" > "All" in Trash Folder
- On the Email management pane, click on Delete to remove all selected Trash items.