When you delete an email from any device that’s synced with your Gmail account, the email is deleted forever. You deleted it in another email client that’s synced with your Gmail account, such as Apple Mail.
To delete Google cookies, sign out of Chrome first. Tips: To sign out of your Google Account on all websites, sign out of Chrome. In the address bar, to quickly reach the Delete browsing data dialog, type “Delete browsing data” and then, tap the Action chip. Learn Chrome Actions to quickly complete tasks.
When you delete your browsing history in Chrome, it’s also deleted on your devices where you’re signed in to Chrome and have your history synced to your Google Account. Tip: Separately, you can also delete your Google search history from your account.
Delete browsing data in Chrome You can delete your Chrome browsing history and other browsing data, like saved form entries, or just delete data from a specific date.
To clean up your inbox, delete messages one at a time or by specific categories. Deleted messages move from your inbox to your trash. Learn what happens when you delete a message Important: When you delete a draft, you can't recover it from Trash. When you delete a message in Gmail, it's moved to Trash. Up to 30 days after deletion: You can find the message in Trash. You can recover the ...
Delete messages in Gmail - Computer - Gmail Help - Google Help
When you use Google sites, apps, and services, some of your activity is saved in your Google Account. You can find and delete your activity in the "My Activity" section of your account. You can also stop Google from saving most of your activity at any time.