Synology MailPlus vs SynoSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Synology MailPlus
Manage your emails efficiently on mobile with intuitive swipe gestures and quick-reply templates. Organize messages, attach files, and search with advanced features. Requires a Synology NAS and MailPlus server.
- Swipe gestures for quick actions
- Quick-reply templates
- Compose and attach files
- Create mailboxes and labels
- Advanced search
- Offline cache for attachments
- Customizable unread badge
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**You must own a Synology NAS to run this app, and be running the MailPlus to get the complete set of features** Composing emails or replying to messages on mobile devices can be a hassle. With the intuitive design of MailPlus, you can accomplish more with less effort. Organize your emails right in the palm of your hand. The swipe gestures allow you to quickly apply desired actions to your emails. Quick-reply templates save repeated keystrokes and make your reply even more efficient. With MailPlus, managing emails is only a few taps or swipes away. With MailPlus for iPhone/iPad, you can: -Compose an email and enrich the content with built-in emoticons -Attach files on your mobile device to the message -Create mailboxes and labels -Customize swipe gestures -Use quick-reply templates to reply to emails efficiently -Share browser content with your friends via MailPlus -Customize the unread email badge to only show notifications for certain labels and mailboxes -Find emails efficiently with advanced search -Offline cache stores previously viewed attachments and images for you to browse later even without Internet connection -Supports HTTPS for secure connection -All features are available with DSM 6.0 and MailPlus 1.2.0 running on Synology DiskStation
SynoSync
This app synchronizes files between your iOS device and Synology NAS, WebDAV, or SMB servers. It integrates seamlessly with the iOS Files app, offering multiple sync modes and conflict resolution options for efficient file management.
- Synology NAS, WebDAV, SMB support
- iOS Files app integration
- Server-to-Local sync
- Local-to-Server sync
- Two-Way synchronization
- Flexible conflict resolution
- Background syncing
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SynoSync is a file synchronization tool crafted for iPhone and iPad, supporting Synology NAS, WebDAV, and SMB services. It is specifically designed to solve the long-standing issue where traditional sync software cannot flexibly integrate into the iOS "Files" app workflow. Simply log into your server, select a shared directory, and use the system file picker to specify a local target—allowing you to sync files to any authorized directory accessible by the Files app. The app supports three sync modes: Server-to-Local, Local-to-Server, and Two-Way synchronization, while offering flexible conflict resolution strategies (Keep Newer, Keep Local, Keep Remote, or Keep Both). With support for extended foreground syncing and automatic background syncing, it is the perfect tool for long-term maintenance of note libraries, document repositories, research data, and project files.
Screenshots
Verdict
The clearest difference is review sentiment: SynoSync at 100% against Synology MailPlus's 43%. SynoSync also leads on rating (5.0 vs 3.8) and update cadence (every 4 days vs every 4 months). Synology MailPlus's advantage is in-app purchases (none vs 1) and ratings volume (19 vs 2). On price, ads, monetization model 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
Both are free to download. SynoSync sells 1 one-off in-app purchase. Synology MailPlus asks for nothing beyond the download.
SynoSync holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Synology MailPlus has 19 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 43% of Synology MailPlus's written reviews are positive against 100% of SynoSync's.
Synology MailPlus ships an update every 4 months, SynoSync every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Synology MailPlus | SynoSync |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (19 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 42.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 19 — better | 2 |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 100 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Synology Inc. | 成豪 董 |
Customer experience
Synology MailPlus
SynoSync
In-app purchases
Synology MailPlus
No in-app purchases
SynoSync
- SynoSync-Plus$4.99









