Software & Apps MS Office Select All Messages on Outlook.com Easily select all emails at once by Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated on March 16, 2020 cogal / Getty Images MS Office Outlook Word Excel Powerpoint Tweet Share Email When you want to delete messages in bulk, mark several messages as read, archive a folder of emails, or send a group of messages to the junk folder, you can select multiple or all emails in a mailbox folder. To select a group of messages in Outlook on the web, use the Select All option. Instructions in this article apply to Outlook.com. How to Select All Email Messages at Once To select a group of messages: Go to the folder that contains the emails you want to select. Choose Select All (the light grey circle with a checkmark in it above the message list). Every email message in the folder is selected, and a checkmark appears next to each message. To deselect a message, clear the checkmark next to the message that you don't want to include in the group. Do what you want to the selected emails—delete, archive, move to a different folder, or mark as read or unread—just as you would for a single email. Your action will apply to all checkmarked emails. For even more flexible sorting and selecting, use a dedicated email client. For example, if you use Microsoft Outlook, you can back up your email information for safe keeping.