None declared
Mostly a question of trust: Voltage Mail collects data linked to you but declares no tracking. The sensitive items are user content. In total the label lists 3 data types; 28% of secure email apps we checked declare tracking.
Voltage Mail privacy in one look
- 1Collects nothing
- 2Not linked
- 3Linked
- 4Tracks you
Built only from the developer's App Store label. It describes disclosure, not tested behaviour.
Voltage Mail collects 1 data type tied to your identity but declares no tracking.
Did Voltage Mail ask for something?
Pick the permission prompt you saw. We compare it with what Voltage Mail's developer declared.
Location is not on Voltage Mail's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
Voltage Mail lists User Content on its label. Choose Limited Access and pick only the photos you want to share.
Contacts is not on Voltage Mail's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
Voltage Mail declares no tracking, so a tracking prompt would contradict its label. Decline it, and consider reporting the mismatch to Apple.
Health & Fitness is not on Voltage Mail's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
A permission is what the app can reach on your iPhone; the label is what the developer says leaves it. They answer different questions.
What Voltage Mail collects, explained
| Data type | What it covers | Where to limit it |
|---|---|---|
| User ContentSensitiveNot linked to you | Messages, photos, videos, audio recordings, documents and support chats you create or upload. | Settings › Privacy & Security › Photos: choose Limited Access or None; review Microphone and Files access too. |
| Contact InfoLinked to you | Your name, email address, phone number or postal address. | Use Sign in with Apple with Hide My Email where offered, and check the app's account and marketing preferences. |
| DiagnosticsNot linked to you | Crash logs, launch times, hang rates and energy use. | Settings › Privacy & Security › Analytics & Improvements › Share With App Developers controls what Apple passes on; the app's own crash reporting is separate. |
What Voltage Mail's label means for you
Voltage Mail's label has 1 type under “Data Linked to You”, 2 types under “Data Not Linked to You”. A data type can appear in more than one section when it is used for different purposes — for example, identifiers used for both analytics and advertising.
Voltage Mail declares no tracking, which means the developer says it does not combine your data with other companies' data for advertising or sell it to data brokers. The data linked to you — contact info — is still tied to your identity, typically through an account, and is covered by the developer's privacy policy and retention rules.
The items that deserve the most attention are user content. This is the content you actually care about. Where it is stored, who can read it and how it is backed up matters more than any other line on the label.
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. Check whether the client connects to your provider directly or stores your mail on its servers.
Among the 141 secure email apps in our snapshot with a label, 28% declare tracking, 60% collect data linked to you and 23% say they collect nothing. Voltage Mail lists 3 data types, about the same as the average of 2.9 for this group.
Business apps often handle other people's data — clients, colleagues and customers — so what they collect can affect more than you.
Settings to check for Voltage Mail
- 1
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.
- 2
Sign-in
When creating an account, Sign in with Apple can give the app a relay address from Hide My Email instead of your real one.
- 3
Lock the app
On iOS 18 and later, touch and hold the icon and choose Require Face ID. Anyone who picks up your unlocked phone then needs your face, fingerprint or passcode to open it.
- 4
Notifications
Settings › Notifications › Voltage Mail › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Does Voltage Mail track you?
There is no “Data Used to Track You” section on Voltage Mail's label.
Does Voltage Mail track you? Full answer and how to stop it →
Lock Voltage Mail behind Face ID
- Find Voltage Mail 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. Voltage Mail now asks for authentication every time it opens.
The lock is an iPhone feature, so it works whether or not Voltage Mail has a passcode of its own. It does not change what the app sends to its developer.
About Voltage Mail
| Developer | Open Text Corporation |
| App Store category | Business (also Productivity) |
| Latest version | 3.9.2, released October 2025 |
| First released | June 2012 |
| Requires | iOS 15.0 or later |
| Size | 24 MB |
| Age rating | 4+ |
| Languages | 1 (EN) |
| Bundle ID | com.voltage.securemail |
The current version shipped in October 2025, over a year before our snapshot. Older apps can lag behind iOS privacy features such as limited photo and contact access.
What the label cannot tell you
- A label is self-reported. Apple publishes the developer's answers and can reject apps that misrepresent them, but it does not independently verify what Voltage Mail sends.
- It does not say where data is stored, how long it is kept, whether it is encrypted, or which companies receive it. The privacy policy covers those points.
- Optional data counts: if a feature lets you add something (a profile photo, a phone number), the type is listed even if you never use the feature.
- Data handled only on your iPhone is not 'collected', so a no-collection label is compatible with an app that reads your files locally.
- Third-party sign-in, payment processors and SDKs are supposed to be included, but a label can lag behind a new version.
The question to ask Voltage Mail's developer: Does my email pass through the app maker's servers?
Voltage Mail vs similar secure email apps
- Spacemail
- Citrix Secure Web
- Voltage Mail (this app)
- ISEC7 MAIL
- MobiVisor Secure Exchange
- MailShot
- Temp Mail - Temporary Email
- Email Security Suite
Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.
Look up any of our apps in seconds, or put two labels side by side.
Apps similar to Voltage Mail
All secure email apps → Who tracks you? A–Z → Apps that collect user content → Privacy label decoder →
Your Voltage Mail privacy checklist
Done. You have applied every control the label points to.
True or false?
- Right.Not quite.
False: there is no Data Used to Track You section on Voltage Mail's label.
- Right.Not quite.
Labels are self-reported by developers. Apple can reject or remove apps that misrepresent practices, but it does not audit each label.
- Right.Not quite.
True: User Content appears on its label, in the Not Linked to You section.
- Right.Not quite.
It is collected and sent; the developer says it is de-identified rather than tied to your account or device.
- Right.Not quite.
Apple's rules require apps to work the same whether or not you allow tracking.