In Outlook, right-click the Trash folder and select Empty "Trash" Folder from the popup menu.
In Webmail, right-click the Trash mailbox and choose Empty Trash.
To have Outlook automatically empty the trash every time you exit the
program, click Tools, select Options, then click the [Other] tab. Check
"Empty the Deleted Items folder upon exiting", then click the [OK] button.
Most of us don't need to retain a copy of every message we've sent. To delete all sent mail in Outlook, open the Sent mailbox, click Edit, Select All, then hit the [Delete] key.
In Webmail, click the Sent mailbox to open it, click the checkbox at the top of the checkbox column to select all messages in the mailbox, then click the Delete button.
To delete some, but not all, sent mail, open the Sent mailbox and select individual messages before deleting.
To select a range of messages, click the first one in the range then shift-click the last one. (Hold the [Shift] key and click the message.)
To select multiple individual messages, control-click each message. (Hold the [Ctrl] key while clicking each message.) Note that every time you send an attachment to someone, a copy of the attached file is created in your Sent folder. Sending multiple versions of the same document to colleagues can quickly add up to a lot of unnecessary files in your Sent mailbox.
An easy strategy for quickly cleaning up your mail account is to delete the attachments in your Sent mailbox. (Remember—the originals already exist somewhere else.)
If you need to save sent messages, consider how long you need to retain
them, then sort the mailbox by date and use the range selection method above
to easily delete messages that are no longer needed. If you need to retain
all sent messages, consider archiving them on your hard drive instead of
leaving them on the mail server. (See Suggestion
The biggest bang for your cleanup buck will come from weeding folders with lots of mail.
To identify the mailbox folders with the most content in Outlook, click Tools, select Mailbox Cleanup, then click "View Mailbox Size." After a few minutes of calculation, a list of all folders and their sizes will appear.
Although most people prefer to clean up each folder individually (see the next suggestion), a more general clean up can be done by using Find items older than [xx] days or Find items larger than [xx]MB. (And after using one method, use the other.)
When the list appears, review it and move critical emails to another
folder before clicking Edit, Select All, then hitting the [Delete] key. If
you want to archive messages, DO NOT use the "Auto Archive" method that's
offered. Instead, refer to the manual archiving instructions in
You can usually find some criteria to aid in deleting messages, e.g., old stuff, large messages, messages with a common subject line, all those "just saying hi" messages from family members, etc.
To identify messages ripe for deletion, open any mailbox in Outlook and click on a column heading to sort its messages by that criterion. The default column that Outlook sorts by is "Received," but you can also sort by "From," "Subject," "Size," or whether the message has an attachment that you might want to save to a local or network drive.
In Webmail, mailboxes can be sorted by To/From, Subject, and Date, but the Advanced Search feature allows you to find messages based on just about any criterion, including presence of an attachment, age, and message size.
No matter how you identify messages for potential deletion, use the
selection techniques in Suggestion #2 to
select multiple messages before deleting.
Attachments tend to be in file formats that take up lots of space. Getting rid of unwanted attachments or multiple copies of attachments can free up lots of space really quickly. (And really, how many photos of Grandpa Bill and the kids do you need?) To get rid of an attachment and its message, just delete the message.
To retain the message but delete the attachment, open the message in Outlook, right-click the attachment name in the header of the message, and select Remove from the popup menu. When prompted to save the changes, click the [Yes] button.
If you want to retain an attached file but don't need its message, save the attachment to a local or network drive. To do so in Outlook, open the message and right-click the attachment name in the header of the message. From the popup menu select Save As..., browse to the location where the file is to be saved (e.g., My Documents\Email Attachments), then click the [OK] button to save the file.
In Webmail, open the message then click the Download link off to the
right of the attachment filename. Save the file to your preferred location.
After saving the attachment, delete the message so the attachment is removed
from the mail server.
Archiving mailbox folders provides a way to keep message contents and still view them in Outlook, but only on the computer to which you archive them. Archived folders reside on the computer's hard drive, not on the mail server, and do not show up in Webmail (or the folders appear to be empty).
To archive a folder in Outlook, click on File, select New, then click Outlook Data File..., and choose the option "Office Outlook Personal Folders File." It’s important to NOT change the default save location (...\Local Settings\Application Data\Microsoft\Outlook ). Name the file the same as the mailbox folder and click the [OK] button. In the "Name: " field use the same filename given to the Outlook data file. Archived folders will appear below your list of email folders.
To move the messages from the mailbox folder into the archive folder, open the mailbox folder, click Edit, then Select All. Click Edit, Move to Folder, select the archive folder, and click the [OK] button.
In Webmail, even though you may have deleted all the emails in your inbox, they are not completely removed. Next to the Trash you may see a (Purge) as seen below. Click where it says (Purge) to completely get rid of everything in your Trash.