Personal accounts
Download anything you want to keep from Settings → Your data.
If you own a workspace with other members, transfer it or delete it first.
Choose Delete account in Settings → Your data and confirm.
Your account, personal vaults, and profile photo are deleted for good. Encrypted backups are gone within 35 days.
Company accounts
If you're a member of a company workspace, your account belongs to the company, so you can't delete it yourself. The owner or an admin deletes it, and can first give your vaults to a colleague or download them as a zip.
Deleting an account can't be undone.