Outlook extensions: the best apps for your mail program

We present the best Outlook apps for expanding the mail program. Upgrade missing functions and adapt Outlook to your requirements. For example, archive mails or add holidays and vacation appointments to the calendar.

Top extension for large mailboxes: find duplicates in Outlook

The 1-click delete Outlook duplicates app finds duplicates in Outlook, regardless of whether they are e-mails, contacts or appointments. You can then remove the found entries with one click.

• You can also use it to merge contacts.
• If you wish, you can undo your changes at any time.
• The extension supports Outlook versions from 2000 onwards. You can try a trial version free of charge, but the full version costs 29.95 euros.

Archive messages with the Outlook extension "MailStore Home"

MailStore Home for Outlook from version 2003 is a free tool for private users with which you can archive messages.

• E-mails can either be saved on your PC or portable (external hard drive, USB stick).
• E-mails that have already been archived can be opened in Outlook with a click of the mouse.
• Thanks to the export function, you can even move to other mail systems.

Holidays and vacation dates in Outlook: With this extension it works

With the extension SmartTools Holiday and Vacation Assistant for Outlook you can integrate holidays and vacation appointments into the Outlook calendar.

• To view the vacation dates, select your country (Germany, Austria or Switzerland) and the corresponding federal state.
• The free app supports Office 365 and all Outlook versions from 2007.

Outlook on the Desktop: Display all information transparently on the desktop

With Outlook on the Desktop you get an overview of the emails on the desktop, where you can read them directly.

• In addition, the current day is displayed with all due dates.
• Depending on your preference, you can also have these elements displayed transparently. Existing icons on the desktop are not covered.
• The free extension works with Outlook from version 2003.

Outlook extension: Find email attachments with "OutlookAttachView"

OutlookAttachView easily finds email attachments in the Outlook inbox.

• There are several filter options available for this. Search for file types, file sizes, keywords in the subject or the mail content. You can also specify a time period in which to search.
• If necessary, you can completely exclude individual folders from the search. The result is then clearly listed.
• The freeware is only available in English, but does not require installation and can be started immediately after unpacking.