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Is Note To Self Mail Safe?

Note To Self Mail privacy label · by Mathias Lipowski · checked November 2026

  • Nothing linked to you
  • Not updated in 2+ years
App Privacy label Developer-reported · checked November 1, 2026
Used to track you
0types

None declared

Linked to you
0types

None declared

Not linked to you
1type
Short answer

On the label it is low-risk: Note To Self Mail collects some data but says none of it is linked to you or used for tracking. None of it falls in Apple's most sensitive categories (health, financial, location, contacts or your own content). In total the label lists 1 data type; 25% of encrypted notes apps we checked declare tracking.

At a glance

Note To Self Mail privacy in one look

Data exposure on the label
Not linked to you
  1. 1
  2. 2
  3. 3
  4. 4

Built only from the developer's App Store label. It describes disclosure, not tested behaviour.

Verdict from the label
Not linked to you

Note To Self Mail collects some data but says none of it is linked to your identity, and none is used for tracking.

Try it

Did Note To Self Mail ask for something?

Pick the permission prompt you saw. We compare it with what Note To Self Mail's developer declared.

It asked me for access to…
Tap a prompt to compare it with the label.
Not on the label

Location is not on Note To Self 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.

Not on the label

User Content is not on Note To Self 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.

Not on the label

Contacts is not on Note To Self 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.

Not declared on the label

Note To Self Mail declares no tracking, so a tracking prompt would contradict its label. Decline it, and consider reporting the mismatch to Apple.

Not on the label

Health & Fitness is not on Note To Self 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.

Line by line

What Note To Self Mail collects, explained

Data typeWhat it coversWhere to limit it
Usage DataNot linked to you What you tap, open and view inside the app, plus which ads you have seen. There is no single iOS switch. Look for an analytics or personalised-ads toggle in the app's own settings.
Reading the label

What Note To Self Mail's label means for you

Note To Self Mail's label has 1 type 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.

Every type on Note To Self Mail's label is in the “not linked” section, so the developer says the data is stripped of anything that identifies you before it is used. That is typical of anonymous analytics and crash reporting. Not linked is still collected: the data leaves your phone.

None of the data types fall into the categories most people consider sensitive: health, financial information, precise location, contacts, browsing history or the content you create.

Notes apps quietly collect some of your most personal writing. 'Encrypted' can mean encrypted in transit, at rest on the server, or end-to-end — only the last keeps the developer out. Find which kind of encryption the developer documents, and whether a lost password means lost notes.

Among the 146 encrypted notes apps in our snapshot with a label, 25% declare tracking, 40% collect data linked to you and 40% say they collect nothing. Note To Self Mail lists 1 data type, about the same as the average of 1.8 for this group.

Productivity apps tend to collect the work you do in them — documents, notes and files — so User Content is common. The question is whether it syncs to the developer's servers and how it is protected there.

On your iPhone

Settings to check for Note To Self Mail

  1. 1

    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.

  2. 2

    Notifications

    Settings › Notifications › Note To Self Mail › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

Cross-app tracking

Does Note To Self Mail track you?

No tracking declared

There is no “Data Used to Track You” section on Note To Self Mail's label.

Does Note To Self Mail track you? Full answer and how to stop it →

iOS 18 and later

Lock Note To Self Mail behind Face ID

  1. Find Note To Self Mail on your Home Screen or in App Library.
  2. Touch and hold the icon until the quick-actions menu opens.
  3. Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
  4. Tap Require Face ID again to confirm. Note To Self Mail now asks for authentication every time it opens.

The lock is an iPhone feature, so it works whether or not Note To Self Mail has a passcode of its own. It does not change what the app sends to its developer.

Lock or hide Note To Self Mail: step-by-step guide →

From the App Store record

About Note To Self Mail

DeveloperMathias Lipowski
App Store categoryProductivity (also Utilities)
Latest version1.25.0, released October 2024
First releasedOctober 2016
RequiresiOS 12.0 or later
Size85 MB
Age rating4+
Languages9 (NL, EN, FR, DE, IT, PT, RU, ZH…)
Bundle IDde.note-to-self.app

The current version shipped in October 2024, 2 years before our snapshot. Apps that are not updated may not support newer iOS privacy controls, and an abandoned app will not get security fixes.

Read with care

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 Note To Self 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 Note To Self Mail's developer: Who holds the encryption key for my notes?

How it compares

Note To Self Mail vs similar encrypted notes apps

Data types listed on each App Store privacy label
Tracks youLinked to youNot linkedCollects nothing

Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.

Checking another app?

Look up any of our apps in seconds, or put two labels side by side.

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All encrypted notes apps → Who tracks you? A–Z → Apps that collect usage data → Privacy label decoder →

Do it now

Your Note To Self Mail privacy checklist

Tick what you have done
Tick each step as you do it on your iPhone.

Done. You have applied every control the label points to.

Quick quiz

True or false?

  1. Q1Note To Self Mail's privacy label says it uses data to track you.
    Right.
    Not quite.

    False: there is no Data Used to Track You section on Note To Self Mail's label.

  2. Q2Apple tests every app to confirm its privacy label is accurate.
    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.

  3. Q3Note To Self Mail collects Usage Data.
    Right.
    Not quite.

    True: Usage Data appears on its label, in the Not Linked to You section.

  4. Q4Data “Not Linked to You” is never sent off your iPhone.
    Right.
    Not quite.

    It is collected and sent; the developer says it is de-identified rather than tied to your account or device.

  5. Q5Tapping “Ask App Not to Track” can stop an app from working.
    Right.
    Not quite.

    Apple's rules require apps to work the same whether or not you allow tracking.

Questions people ask

Note To Self Mail privacy FAQ

Is Note To Self Mail safe to use?
Based on its App Store privacy label, note To Self Mail collects some data but says none of it is linked to your identity, and none is used for tracking. Whether that is acceptable depends on what you will store in it. The label is developer-reported, not an independent security test.
Does Note To Self Mail track you?
No. Note To Self Mail's label has no Data Used to Track You section.
What data does Note To Self Mail collect?
Usage data. None of it is linked to your identity.
Who makes Note To Self Mail?
Mathias Lipowski, according to the App Store. It was first released in October 2016 and the current version is 1.25.0.
Can I lock Note To Self Mail with Face ID?
On iOS 18 or later, touch and hold Note To Self Mail's icon and choose Require Face ID (or Touch ID / Passcode). This is an iPhone feature and works for most downloaded apps, whether or not the app has its own lock.
How does Note To Self Mail compare with other encrypted notes apps?
Across 146 encrypted notes apps with labels in our snapshot, 25% declare tracking and 40% say they collect no data. Note To Self Mail lists 1 data type against an average of 1.8.
Who holds the encryption key for my notes?
The privacy label cannot answer that. Look for it in Note To Self Mail's privacy policy or support pages, linked from the App Store listing. Find which kind of encryption the developer documents, and whether a lost password means lost notes.
How do I delete my data from Note To Self Mail?
Apps that let you create an account must also let you start account deletion from inside the app (an App Store rule since June 2022). Deleting the app from your iPhone alone does not delete data already sent to the developer.
Facts on this page come from Note To Self Mail on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction