Some simple reasons to use an incognito mode...
1. Keeping your Browsing History Private
The popular reason for using Incognito mode is that it doesn't keep a record of your browsing activity or history which means you can search and open things without stressing about clearing your browsing history later.
2. Deletes Cookies
Every online session creates user data, such as cookies as soon as your session ends, so they can't harm your privacy.
3. You Can Use Multiple Accounts
You should set up different browser "profiles" to switch between email accounts within one browser, but the incognito mode is the quick and easy way of doing this, no setup is required.
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