Tap the address in question, then tap Reactivate address. If you want to re-activate the address at any time, you'll find it in an "Inactive Addresses" section at the bottom of your active addresses list.
Launch the Settings app on your iPhone or iPad.If you aren't currently using a random address generated by Hide My Email, you can temporarily deactivate it so that you don't receive any forwarded email from it. How to Deactivate an Address Using Hide My Email Providing them with a dummy address means you can deactivate or delete the address at any time, ensuring any unsolicited emails don't reach your inbox. They're really useful if you think that a business or website is likely to share your email address with ad agencies or other third-parties for marketing purposes. In iOS 15, paid iCloud+ plans feature Hide My Email, which lets you create unique, random email addresses that forward messages to your personal inbox whenever you want to keep your personal email address private.