Removing auto
In the current New Outlook for Windows, removing individual auto- complete (suggested recipient ) entries is no longer supported. The per- entry delete options (such as the X next to a suggestion or using Delete on a highlighted suggestion) were removed in recent releases.
We explain how to clear the Outlook Auto- complete cache completely & how to delete a specific entry from the Auto- complete list .
Microsoft 365
Many clients have the ability to remember what addresses you have sent messages to - this is known as your auto- complete list . Sometimes you may enter the wrong address for a recipient or the recipient changes their address. The steps below will guide you through the process of either removing an address from this list or clearing the entire list .

Instead of waiting for the AutoComplete list to populate and store all the email names and addresses you use, you can add useful email addresses to your AutoComplete list without sending emails. To add addresses to the AutoComplete list without sending an email to the recipient , do the following: 1.
How to add contacts to Auto
The AutoComplete list , also known as the nickname cache, is generated automatically when you send email messages from Outlook. The list contains SMTP addresses, LegacyExchangeDN entries, and display names for people you sent mail to previously.
Deleting Auto

As we can see from the illustration, Complete List Entry For The Recipient has many fascinating aspects to explore.
Following an update to classic Outlook version 2603, the X to delete autocomplete entries from the Suggested Contacts list is gone.
This way, the least frequently used email addresses and names will be at the bottom of the list . Once you remove a name from the autocomplete list , it is added back to the list the next time you send an email using that address. The AutoComplete list is created on all devices where you use the Outlook application independently.
Simple Hacks to Manage the Outlook AutoComplete List
AutoComplete is one of the most underrated features of Outlook. In this page, you will learn to manage autocomplete list in Outlook.
Understanding Complete List Entry For The Recipient Before the Gallery
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