Works for Temp Mail Ultimate whether or not it has its own passcode. No download needed.
Touch and hold Temp Mail Ultimate's icon, tap Require Face ID, then confirm. On iOS 18 and later that puts Temp Mail Ultimate behind Face ID, Touch ID or your passcode; choose Hide and Require Face ID instead to move it into App Library's Hidden folder as well.
Lock Temp Mail Ultimate with Face ID
- Find Temp Mail Ultimate on your Home Screen or in App Library.
- Touch and hold the icon until the quick-actions menu opens.
- Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
- Tap Require Face ID again to confirm. Temp Mail Ultimate now asks for authentication every time it opens.
To test it, close Temp Mail Ultimate from the App Switcher and open it again. You should see the Face ID prompt before any content appears.
Hide Temp Mail Ultimate in App Library
- Touch and hold Temp Mail Ultimate's icon and tap Require Face ID.
- Choose Hide and Require Face ID instead of Require Face ID.
- Confirm. The icon leaves your Home Screen and moves to the Hidden folder at the bottom of App Library.
- To open it later, swipe to App Library, tap Hidden and authenticate.
Hiding also locks the app. To undo either, touch and hold the icon again and choose Don't Require Face ID.
Why lock Temp Mail Ultimate?
Temp Mail Ultimate's privacy label lists user content — the kind of data you would not want on screen if someone borrows your unlocked phone. Email apps see every message and contact. Third-party mail clients may route mail through their own servers to offer features like push or AI summaries.
Utilities range from calculators to VPNs, so their labels vary more than any other category. A simple tool that collects identifiers and usage data for tracking is a sign of advertising SDKs.
A lock answers one question — who can open the app on this iPhone. It does not change what Temp Mail Ultimate sends to its developer; for that, see Temp Mail Ultimate's full privacy report.
What the lock does and does not do
It does
- Ask for Face ID, Touch ID or passcode every time Temp Mail Ultimate opens
- Hide message previews in notifications
- Keep Temp Mail Ultimate's content out of Spotlight and Siri suggestions
- With Hide, remove the icon from the Home Screen
It does not
- Stop someone who knows your passcode
- Encrypt or change how Temp Mail Ultimate stores data
- Sync to your iPad or other devices
- Remove Temp Mail Ultimate from purchase history or Screen Time reports
Don't see Require Face ID?
- Update to iOS 18 or later in Settings › General › Software Update.
- Make sure a passcode is set in Settings › Face ID & Passcode; the lock needs one.
- Some Apple apps (Settings, Calculator, Camera, Maps, Find My, Clock) cannot be locked or hidden.
- If your iPhone is managed by work or school, the option may be restricted.
Other settings worth checking for Temp Mail Ultimate
Tracking
Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.
Photos
Settings › Privacy & Security › Photos. Limited Access lets you pick exactly which pictures the app can see; Add Photos Only lets it save without reading your library.
Notifications
Settings › Notifications › Temp Mail Ultimate › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Temp Mail Ultimate's full privacy label
None declared
Lock these apps too
After you lock Temp Mail Ultimate
Done. You have applied every control the label points to.
FAQ
Does Temp Mail Ultimate have its own passcode?
What happens to Temp Mail Ultimate's notifications when it is locked?
Can someone who knows my passcode open a locked app?
Is a locked Temp Mail Ultimate encrypted?
Why can't I see the Require Face ID option?
Does hiding Temp Mail Ultimate remove it from my purchase history?
Is Temp Mail Ultimate safe? Full privacy report →Does Temp Mail Ultimate track you? →Lock an app: A–Z →All utilities apps →