Comparison

1Time Mail vs Postfach

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

Head to head
About

1Time Mail

Protect your personal inbox from spam by generating temporary email addresses. Use these disposable emails for website sign-ups and registrations on untrusted sites.

Highlights
  • Generate temporary email addresses
  • Disposable email service
  • Block spam from personal inbox
  • Use for website sign-ups
  • Secure registrations
Features
Read full description

Stop spam from reaching your personal inbox. Generate a temporary email address with 1Time Mail and use it for website sign-ups, registrations, and other sites you don't fully trust.

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

1Time Mail3 screens
Postfach4 screens

Verdict

The call

The clearest difference is in-app purchases: 1Time Mail at none against Postfach's 1. 1Time Mail also leads on iOS requirement (15.1 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. 1Time Mail asks for nothing beyond the download.

UpkeepUpdate frequency

1Time Mail ships an update monthly, Postfach daily. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 6 level
1Time Mail versus Postfach: the parameters behind the verdict, then further details
Parameter1Time MailPostfach
PriceFreeFree
Rating3.8 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS15.1 — better18.0
Further details — not scored
Size30 MB21 MB
Age rating4+4+
DeveloperValmark LTDesense GmbH

In-app purchases

None

1Time Mail

No in-app purchases

1 purchases

Postfach

One-time1
  • Postfach Pro$22.99

Questions

Is 1Time Mail free?
1Time Mail is free to download, with no in-app purchases.
Is Postfach free?
Postfach is free to download, with in-app purchases available.
Do 1Time Mail or Postfach have ads?
Neither 1Time Mail nor Postfach shows ads.
Which is updated more often, 1Time Mail or Postfach?
1Time Mail ships an update monthly, and Postfach daily. Most recently, 1Time Mail was updated on October 25, 2026 and Postfach on October 26, 2026.

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