To delete all your messages from iCloud, follow these steps:
1. Sign in to iCloud.com: Open a web browser and go to iCloud.com. Enter your Apple ID and password to sign in.
2. Access Mail: Once you’re signed in, you’ll see different options like Mail, Contacts, Calendar, etc. Select the Mail option to access your iCloud email account.
3. Go to the Trash folder: In the left sidebar, you’ll find a list of folders including Inbox, Sent, Drafts, and Trash. Click on the Trash folder to view all the messages you’ve deleted.
4. Delete messages individually: If you want to delete messages one at a time, simply click on the message you want to delete. Then, click on the Trash button (usually represented by a trash can icon) to move it to the Trash folder. Repeat this process for each message you want to delete.
5. Delete multiple messages: If you want to delete multiple messages at once, hold down the Command key (Mac) or the Control key (Windows) on your keyboard. While holding the key, click on each message you want to delete. Once you have selected all the messages, click on the Delete button to move them to the Trash folder.
6. Empty the Trash: After you have deleted the messages, they will be moved to the Trash folder. To permanently delete them and free up storage space, click on the Trash folder and then click on the Empty Trash button. A confirmation message will appear, and you can click on Empty Trash again to confirm the deletion.
7. Check other folders: Sometimes, messages may be stored in different folders like Junk or Archive. Make sure to check these folders as well and repeat the above steps to delete messages from those folders if needed.
8. Repeat for other devices: If you have multiple devices connected to your iCloud account, such as an iPhone or iPad, you may need to repeat the above steps on each device to delete messages from iCloud across all your devices.
It’s important to note that deleting messages from iCloud will remove them from all devices connected to your iCloud account. If you want to keep a copy of some messages, make sure to back them up before deleting them.
I hope this detailed explanation helps you delete all your messages from iCloud. If you have any further questions, feel free to ask.