Comparison

Synology MailPlus vs SynoSync

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

**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

About

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.

Highlights
  • 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
Features
Read full description

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

Synology MailPlus4 screens
SynoSync4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SynoSync sells 1 one-off in-app purchase. Synology MailPlus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Synology MailPlus versus SynoSync: the parameters behind the verdict, then further details
ParameterSynology MailPlusSynoSync
PriceFreeFree
Rating3.8 (19 ratings)5.0 (2 ratings) — better
Positive reviews42.5% of reviews100.0% of reviews — better
Number of ratings19 — better2
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.016.4 — better
Further details — not scored
Size100 MB20 MB
Age rating4+4+
DeveloperSynology Inc.成豪 董

Customer experience

Synology MailPlus

All ratings19 ratings
Positive63.2%
Neutral21.1%
Negative15.8%
Written reviews80 reviews
Positive42.5%
Neutral25.0%
Negative32.5%

SynoSync

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Synology MailPlus

No in-app purchases

1 purchases

SynoSync

One-time1
  • SynoSync-Plus$4.99

Questions

Is Synology MailPlus free?
Synology MailPlus is free to download, with no in-app purchases.
Is SynoSync free?
SynoSync is free to download, with in-app purchases available.
Which has better reviews, Synology MailPlus or SynoSync?
SynoSync is rated higher. Synology MailPlus averages 3.8 out of 5 from 19 ratings, while SynoSync averages 5.0 from 2 ratings.
Do Synology MailPlus or SynoSync have ads?
Neither Synology MailPlus nor SynoSync shows ads.
Which is updated more often, Synology MailPlus or SynoSync?
Synology MailPlus ships an update every 4 months, and SynoSync every 4 days. Most recently, Synology MailPlus was updated on October 24, 2026 and SynoSync on October 25, 2026.

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