Comparison

Zero Inbox vs OneMail

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

Head to head
About

Zero Inbox

This email application streamlines inbox management with customizable multi-action swipe gestures. Effortlessly process emails by assigning multiple tasks to a single swipe, such as archiving, trashing, or sending to a to-do list. Enjoy a fast and intuitive email experience.

Highlights
  • Multi-action swipe gestures
  • Customizable swipe actions
  • Fast loading speed
  • Integration with Todoist
  • Smart avatar loading
  • Dark mode
Features
Read full description

Zero Inbox is an email app designed for zeroing your inbox via enjoyable swipe actions. Unlike traditional email's swipe action can only allow one action per swipe, we provide multi-action swipe for each direction, empower you to process your email effortlessly on daily basis. For example, for swiping right, you can choose - Swipe right-down-right to push the email to Todoist - Swipe straight right to archive - Swipe right-up-right to trash We also worked hard to make the app to provide blazing fast loading speed. There are more awesome features to come in the following updates: - Customizable swipe actions - In mail swipe action (like Tinder but for email) - Multi-step swipe (one swipe can do many things like Mark read + Archive + push to Todoist) - Smart avatar (load sender's avatar from known email list or public avatar database) - Dark mode

About

OneMail

This app consolidates multiple email accounts into a single, organized inbox. It offers features like colored account tags, email grouping by date, and a dark mode for enhanced readability. Users can manage folders, filter emails by category, and customize actions for a streamlined email experience.

Highlights
  • Unified inbox for multiple accounts
  • Colored account tags
  • Group emails by date
  • Dark mode
  • HTML formatted signatures
  • Unsubscribe with a tap
  • Customizable swipe actions
Features
Read full description

OneMail is an IMAP multi accounts email app that groups beautifully your emails into one Inbox. With Tag colored accounts you can easily know each email to which account it belongs to. OneMail groups your emails by date so you can easily peek at the received time without the need to enter to the email. With Dark mode you can experience a beautiful new design and eyes comfort in low light environment. OneMail is designed to optimize the synchronization time between your inbox and you email provider. With OneMail you can: - Switch between your accounts and you unified inbox easily. - Send emails with HTML formatted signatures. - Open and send email attachments. - Open and browse compressed files and send uncompressed files individually. - Unsubscribe with a tap. - Easily manage your Inbox by creating, renaming and removing folders. - Easy filter you inbox by categories like Unread, Newsletters, emails with attachments... - Search and select contacts from your phone contacts. - Customize Swipe Actions. - Undo Actions like send, delete, archive... - Snooze Emails - Make OneMail your default email app. With OneMail Plus! you can:  - Add unlimited number of mail accounts. - Receive push notifications from all IMAP providers. OneMail is built over the respect of user privacy and do not store any informations from your emails. All your emails data and headers are stored locally on your device. We will keep improving OneMail so your feedback will be appreciated. You can contact us at support@nouvelware.com Terms and Conditions: https://nouvelware.com/tc

Screenshots

Zero Inbox3 screens
OneMail4 screens

Verdict

The call

The clearest difference is rating: OneMail at 4.4 against Zero Inbox's 3.7. OneMail also leads on ratings volume (297 vs 3) and update cadence (every 9 days vs every 3 weeks). Zero Inbox's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, device support and iOS requirement 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. OneMail sells 4 in-app purchases, starting at $1.99 per month. Zero Inbox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OneMail holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: OneMail has 297 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 50% of Zero Inbox's written reviews are positive against 34% of OneMail's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Zero Inbox ships an update every 3 weeks, OneMail every 9 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
Zero Inbox versus OneMail: the parameters behind the verdict, then further details
ParameterZero InboxOneMail
PriceFreeFree
Rating3.7 (3 ratings)4.4 (297 ratings) — better
Positive reviews50.0% of reviews — better34.4% of reviews
Number of ratings3297 — better
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size27 MB26 MB
Age rating4+4+
DeveloperLaunch Platform LLCNouvelware

Customer experience

Zero Inbox

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

OneMail

All ratings298 ratings
Positive87.2%
Neutral1.0%
Negative11.7%
Written reviews61 reviews
Positive34.4%
Neutral16.4%
Negative49.2%

Bugs and requests

Zero Inbox

Not enough reviews yet to summarise bugs or requests.

OneMail

Reported bugs

15 issues
  • App crashes when adding multiple email accounts
  • Crashes when moving emails to folders
  • Red screen freeze after adding email accounts
  • White blank screen on app launch
  • Snoozed emails reappearing in junk folder
Show 10 more
  • Email blocking feature not working
  • Notifications not working despite settings
  • Cannot send or forward emails
  • Emails disappearing from inbox
  • App crashes on iOS 16.1 and later versions
  • Sync failures with AOL and other providers
  • iPad compatibility issues (crashes on iPad)
  • Hotmail account setup conflicts
  • App flashing back to home screen on iPad
  • Slow performance and random folder navigation errors

Requested features

11 requests
  • Calendar integration with meeting invitations
  • Email printing functionality
  • Bulk delete multiple messages at once
  • Folder creation and management
  • Email aliases for replies
Show 6 more
  • Larger font size customization
  • Evernote integration
  • MacBook Pro support
  • Password visibility toggle during account setup
  • Ability to show additional email providers like mail.com
  • Flagged emails sorting to top of inbox

In-app purchases

None

Zero Inbox

No in-app purchases

4 purchases

OneMail

Subscriptions4
  • OneMail Plus$1.991 Month
  • OneMail Plus! Monthly$1.991 Month
  • OneMail Plus$7.991 Year
Show 1 more
  • OneMail Plus! Yearly$7.991 Year

Questions

Is Zero Inbox free?
Zero Inbox is free to download, with no in-app purchases.
Is OneMail free?
OneMail is free to download, with in-app purchases available.
Which has better reviews, Zero Inbox or OneMail?
OneMail is rated higher. Zero Inbox averages 3.7 out of 5 from 3 ratings, while OneMail averages 4.4 from 297 ratings.
Do Zero Inbox or OneMail have ads?
OneMail shows ads; Zero Inbox does not.
Which is updated more often, Zero Inbox or OneMail?
Zero Inbox ships an update every 3 weeks, and OneMail every 9 days. Most recently, Zero Inbox was updated on November 2, 2026 and OneMail on November 3, 2026.

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