Comparison

MobiVisor Secure Exchange vs Postfach

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MobiVisor Secure Exchange

Enhance your company's email security with an extension that adds advanced security settings to your existing service. Manage emails, calendars, contacts, and folders securely within the app, with features like remote deletion and secure attachment opening.

Highlights
  • Enhanced email security
  • Secure attachment opening
  • Remote account deletion
  • Email, calendar, contact management
  • Folder creation and management
  • Appointment and task scheduling
Features
Read full description

With Secure Exchange, we address the issue of security in the company and offer an extension for your existing email service that allows for additional security settings. This minimizes your security risk within the company. Secure Exchange enables the management of emails, calendars, contacts, and folders. Secure Exchange opens attachments within the app and prevents access from external applications. We also support remote deletion, ensuring that you can delete your account if necessary. Basic email features: * Send, delete, mark as unread, and move emails to another folder * Reply to emails (reply all also possible) * Automatic marking as "read" * Add and remove favorites Features for secure Exchange folders: * Create a new folder * Change the folder name * Delete a folder Secure Exchange contact features: * Create a new contact * Update contacts * Delete contacts Secure Exchange calendar features: * Create a new appointment or task * Invite other participants * Delete appointments or tasks

About

Postfach

Features
Read full description

We run no servers, so there is nothing of yours on one. A call from our hosting provider started it. They asked whether one of our important addresses had anything to do with a big cloud company — it didn't. It turned out the mail app we were using was routing through that company to deliver push notifications. We had tried nearly every mail app by then and were never quite happy, so we built our own. Here is why that call mattered. To push a notification for an ordinary IMAP account, an app has to keep your password — or a token that opens the same door — on its own server, and watch your mailbox from there. Postfach never does this. Your password stays in your Keychain, and new mail is announced by your own device once it has fetched it: on the Mac within seconds while the app is running, on the iPhone whenever iOS grants a check in the background. Instant push is the one thing we gave up, and that is why. WHAT IT DOES - Any IMAP account: Zimbra, Gmail, and the rest. Zimbra servers are found from the address alone. - Write, reply, forward, and send, with attachments. - All Inboxes: one list over every account, newest first, with each message acting on its own account. - Conversations, with replies from every folder gathered under the message you are looking at. - Every message kept on your device in full, so reading works offline and search finds words anywhere in years of mail in a fraction of a second. - Templates with placeholders for the replies you write again and again. - Folders: create, rename, move, and delete them, on the server. - Swipe to delete, flag, mark as junk, or archive. - New-mail notifications from your own device, once it has fetched, per account, and the unread count on the icon. - HTML mail rendered with scripts off and remote images blocked until you ask for them. - Light and dark appearance. English, German, French, Italian, Spanish, and Japanese. WHAT IT DOES NOT DO No analytics, no crash reporting, no advertising identifier, nothing measured and sent anywhere. No AI: no summaries, no smart replies, no sorted inbox, and no model of ours or anyone else's sees a word of your mail. No account with us, because there is nothing to have an account for. That is why the privacy label reads "Data Not Collected", and why there is no setting to turn any of it off: none of it is there. PRICING Every feature is free for 60 days. After that, sending and receiving mail need a single purchase, Postfach Pro — one price for your Mac, iPhone, and iPad, no subscription. Mail already on your device stays readable and searchable whether you buy or not.

Screenshots

MobiVisor Secure Exchange4 screens
Postfach4 screens

Verdict

The call

The clearest difference is in-app purchases: MobiVisor Secure Exchange at none against Postfach's 1. MobiVisor Secure Exchange also leads on iOS requirement (13.0 vs 18.0). Postfach's advantage is update cadence (daily vs monthly). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Postfach sells 1 one-off in-app purchase. MobiVisor Secure Exchange asks for nothing beyond the download.

UpkeepUpdate frequency

MobiVisor Secure Exchange ships an update monthly, Postfach daily. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 6 level
MobiVisor Secure Exchange versus Postfach: the parameters behind the verdict, then further details
ParameterMobiVisor Secure ExchangePostfach
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better18.0
Further details — not scored
Size54 MB19 MB
Age rating4+4+
DeveloperBor Software LLCesense GmbH

In-app purchases

None

MobiVisor Secure Exchange

No in-app purchases

1 purchases

Postfach

One-time1
  • Postfach Pro$22.99

Questions

Is MobiVisor Secure Exchange free?
MobiVisor Secure Exchange is free to download, with no in-app purchases.
Is Postfach free?
Postfach is free to download, with in-app purchases available.
Do MobiVisor Secure Exchange or Postfach have ads?
Neither MobiVisor Secure Exchange nor Postfach shows ads.
Which is updated more often, MobiVisor Secure Exchange or Postfach?
MobiVisor Secure Exchange ships an update monthly, and Postfach daily. Most recently, MobiVisor Secure Exchange was updated on October 2, 2026 and Postfach on October 13, 2026.

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