# Zero Inbox vs Mailbutler mobile

The clearest difference is in-app purchases: Zero Inbox at none against Mailbutler mobile's 6. Zero Inbox also leads on iOS requirement (12.0 vs 15.0). Mailbutler mobile's advantage is review sentiment (78% vs 50%) and ratings volume (126 vs 3). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Mailbutler mobile sells 6 in-app purchases, starting at $8.49 per month. Zero Inbox asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.7 for Zero Inbox against 3.8 for Mailbutler mobile. That said, the two scores are not equally well evidenced: Mailbutler mobile has 126 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 50% of Zero Inbox's written reviews are positive against 78% of Mailbutler mobile's.

Zero Inbox ships an update every 3 weeks, Mailbutler mobile fortnightly. The most recent releases landed on October 9, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Zero Inbox | Mailbutler mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/zero-inbox/id1457415717/reviews) | **[3.8 (126 ratings)](https://appshunter.io/ios/app/mailbutler-mobile/id1461320466/reviews)** |
| Number of ratings | 3 | **126** |
| Positive reviews | 50.0% of reviews | **78.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 27 MB | 19 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Launch Platform LLC](https://appshunter.io/developer/1586861720) | [Mailbutler GmbH](https://appshunter.io/developer/1172825979) |

## What reviewers say

### Zero Inbox

[App page](https://appshunter.io/ios/app/zero-inbox/id1457415717)

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:** macOS Compatibility

**In-app purchases:** none


### Mailbutler mobile

[App page](https://appshunter.io/ios/app/mailbutler-mobile/id1461320466)

Enhance your email productivity on the go with this companion app. Track email opens, manage contacts with insights, and organize tasks and notes. Collaborate with your team by sharing contacts, tasks, and templates.

**Highlights:** Email Tracking, Contact Management, Task Attachment, Note Taking, Team Collaboration, Signature Templates

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional (Monthly) | $8.49 | per month |
| Professional+ (Monthly) | $14.99 | per month |
| Business (Monthly) | $31.99 | per month |
| Professional (Yearly) | $86.99 | per year |
| Professional+ (Yearly) | $149.99 | per year |
| Business (Yearly) | $329.99 | per year |

**What reviewers like**

- 💡 Great app for business development
- 🚀 Tremendous help for workflow and email management
- 👍 Excellent email tracking and signature features
- 👍 Reliable and has never let users down
- 👍 Helps understand open rates and engagement

**What reviewers complain about**

- 🐛 Constant log-off issues on iOS
- 🐛 Doesn't work properly on iOS with Gmail
- 🐛 Flashing/blinking screen on iOS
- 🐛 Doesn't work anymore on iOS or Mac
- 🐛 Poor responsiveness on iOS

**Reported bugs**

- Constant login issues on iOS
- Flashing/blinking screen on iOS
- Doesn't work properly with Gmail on iOS
- Doesn't work anymore on iOS or Mac

**Requested features**

- Split screen functionality on iPad
- Ability to set reminders for incoming emails
- Full integration with iOS Mail app
- Ability to send tracked emails from iOS
- More a-la-carte feature options


## Frequently asked questions

### Is Zero Inbox free?

Zero Inbox is free to download, with no in-app purchases.

### Is Mailbutler mobile free?

Mailbutler mobile is free to download, with in-app purchases available.

### Which has better reviews, Zero Inbox or Mailbutler mobile?

Mailbutler mobile is rated higher. Zero Inbox averages 3.7 out of 5 from 3 ratings, while Mailbutler mobile averages 3.8 from 126 ratings.

### Do Zero Inbox or Mailbutler mobile have ads?

Neither Zero Inbox nor Mailbutler mobile shows ads.

### Which is updated more often, Zero Inbox or Mailbutler mobile?

Zero Inbox ships an update every 3 weeks, and Mailbutler mobile fortnightly. Most recently, Zero Inbox was updated on October 9, 2026 and Mailbutler mobile on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*