eM Client vs OX Drive by Open
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eM Client
Manage emails, calendars, tasks, contacts, and notes efficiently in one application. Features AI assistance for drafting and replying, robust security with PGP and S/MIME encryption, and instant message translation. Offers advanced privacy options and seamless integration with cloud storage and online meetings.
- Unified inbox for emails, calendars, tasks, contacts, and notes
- AI-powered email drafting and reply assistance
- PGP and S/MIME encryption for secure communication
- Instant message translation
- Advanced privacy and mail-tracking pixel detection
- Integration with cloud storage and online meetings
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These features include: • Super easy setup including quick import from the desktop app via QR code • AI Support for replies and email drafting • Emails, calendars, tasks, contacts and notes all in one place • Favorite, Global, and search folders to easily manage multiple accounts • Instant message translation • PGP and S/MIME encryption • Tags and Gmail labels support to sort and color-code your messages • Signatures you can choose from and assign to your accounts • QuickText: snippets of text you can quickly insert into your emails • Templates • Messages grouped into conversations • Advanced privacy options • Mail-Tracking pixel detection • Snooze • Watch for reply • Undo Send • Password protection • Online meetings integration • Cloud storage providers integration • Mobile device management (MDM) support and more
OX Drive by Open
Access and manage your cloud files directly from your device's native file manager. Organize, share, and edit documents, photos, and other files seamlessly. Compress files and scan documents for easy upload.
- Integrates with native Files app
- Drag and drop file transfer
- File compression
- Document scanning
- Edit and save files
- Share files via links or invitations
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OX Drive is the file storage and management part of Open-Xchange's OX App Suite and OX Cloud platforms. This new OX Drive app enhances OX Drive by making all your OX Drive content available within your Apple mobile device’s Files app. Please note that this only works in conjunction with OX App Suite or OX Cloud. You will need a valid OX App Suite (version 7.10.6 or above) or OX Cloud account to use this app. Features: - Use Apple's native Files app to browse and organize your OX Drive content - Drag and Drop files from other apps, or storage locations, into OX Drive and vice versa - Compress your files to save storage space - Scan documents and directly upload them - Edit files with other supported apps and save the new versions directly in OX Drive - Share photos, files and documents via general link or personal invitation
Screenshots
Verdict
The clearest difference is rating: OX Drive by Open at 4.2 against eM Client's 3.7. eM Client's advantage is update cadence (every 10 days vs every 3 months) and ratings volume (51 vs 5). On price, review sentiment, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OX Drive by Open holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: eM Client has 51 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 48% of eM Client's written reviews are positive against 50% of OX Drive by Open's.
eM Client ships an update every 10 days, OX Drive by Open every 3 months. Both last shipped on November 3, 2026.
| Parameter | eM Client | OX Drive by Open |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (51 ratings) | 4.2 (5 ratings) — better |
| Positive reviews | 48.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 51 — better | 5 |
| Update frequency | Every 10 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 179 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | eM Client | Open-Xchange Inc. |
Customer experience
eM Client
OX Drive by Open
Bugs and requests
eM Client
Reported bugs
4 issues- Emails not sending immediately
- Drafts not visible or editable
- Inconsistent behavior when switching between folders
- Trouble signing in to multiple Google accounts
Requested features
6 requests- Calendar integration
- Improved background refresh and sync
- Custom notification sounds
- Ability to sort emails by sender
- More customization options
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- Actions from notifications (archive, mark as read, etc.)
OX Drive by Open
Not enough reviews yet to summarise bugs or requests.
In-app purchases
eM Client
No in-app purchases
OX Drive by Open
No in-app purchases
Questions
Is eM Client free?
Is OX Drive by Open free?
Which has better reviews, eM Client or OX Drive by Open?
Do eM Client or OX Drive by Open have ads?
Which is updated more often, eM Client or OX Drive by Open?
Other comparisons
