# GMX vs Viewer by SEPPmail

The clearest difference is review sentiment: GMX at 71% against Viewer by SEPPmail's 0%. GMX also leads on rating (4.7 vs 1.0) and update cadence (every 2 weeks vs every 13 months). Viewer by SEPPmail's advantage is in-app purchases (none vs 19) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. GMX sells 12 in-app purchases, starting at $0.99 per month. Viewer by SEPPmail asks for nothing beyond the download.

GMX holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: GMX has 17K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 71% of GMX's written reviews are positive against 0% of Viewer by SEPPmail's.

GMX ships an update every 2 weeks, Viewer by SEPPmail every 13 months. The most recent releases landed on September 24, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | GMX | Viewer by SEPPmail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (17K ratings)](https://appshunter.io/ios/app/gmx-mail-and-cloud/id417352269/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/viewer-by-seppmail/id6446402452/reviews) |
| Number of ratings | **17K** | 1 |
| Positive reviews | **70.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 370 MB | 19 MB |
| Requires iOS | 18.0 | **12.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [1&1 Mail & Media GmbH](https://appshunter.io/developer/308299517) | [SEPPmail AG](https://appshunter.io/developer/586785754) |

## What reviewers say

### GMX

[App page](https://appshunter.io/ios/app/gmx-mail-and-cloud/id417352269)

Manage your email, cloud storage, and news in one convenient app. Features a smart inbox that automatically categorizes emails for better organization and a secure cloud for file backup and sharing. Enjoy customizable push notifications and PIN protection for enhanced security.

**Highlights:** Smart Inbox for automatic email categorization, Secure cloud storage for file backup and sharing, Customizable push notifications, PIN protection for secure access, Support for multiple GMX mail accounts, Battery-saving email push service

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud 30 GB | $0.99 | per month |
| TrackFree | $1.49 | per month |
| adfree App | $1.99 | per month |
| Cloud 100 GB | $1.99 | per month |
| Cloud 150 GB | $2.49 | per month |
| Cloud 250 GB | $3.49 | per month |
| GMX ProMail | $3.99 | per month |
| GMX ProMail | $4.49 | per month |
| GMX TopMail | $6.99 | per month |
| AdFree | $22.90 | per year |
| GMX ProMail | $49.99 | per year |
| GMX TopMail | $69.99 | per year |

**What reviewers like**

- 🚀 Available always
- 🔒 Secure and reliable
- 👍 Simple and easy to use
- 👍 Comprehensive and feature-rich
- 👍 Great alternative to big tech

**What reviewers complain about**

- 🐛 Occasional login issues
- 🐛 Slow loading times
- 🐛 Crashes and bugs
- 🔍 Unwanted ads and spam
- 🌐 Confusing German language pages

**Reported bugs**

- Frequent sign-outs
- Inconsistent sync between devices
- Inability to access certain folders

**Requested features**

- Customizable font sizes
- Dark mode option
- Improved spam filtering
- Better integration with other apps
- Ability to schedule emails


### Viewer by SEPPmail

[App page](https://appshunter.io/ios/app/viewer-by-seppmail/id6446402452)

This application allows you to receive, decrypt, and read secure emails with "secure-email.html" attachments. It is designed for users who have received encrypted messages sent via a SEPPmail Appliance.

**Highlights:** Receive encrypted emails, Decrypt secure attachments, Read secure email content, Supports SEPPmail Appliance encryption

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

**In-app purchases:** none


## Frequently asked questions

### Is GMX free?

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

### Is Viewer by SEPPmail free?

Viewer by SEPPmail is free to download, with no in-app purchases.

### Which has better reviews, GMX or Viewer by SEPPmail?

GMX is rated higher. GMX averages 4.7 out of 5 from 17K ratings, while Viewer by SEPPmail averages 1.0 from 1 ratings.

### Do GMX or Viewer by SEPPmail have ads?

GMX shows ads; Viewer by SEPPmail does not.

### Which is updated more often, GMX or Viewer by SEPPmail?

GMX ships an update every 2 weeks, and Viewer by SEPPmail every 13 months. Most recently, GMX was updated on September 24, 2026 and Viewer by SEPPmail on August 24, 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.*