Comparison

Synology MailPlus vs HIKBOX

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

HIKBOX

Securely back up and manage photos, videos, and other files from your smart storage device to your phone. Features auto-backup, intelligent picture recognition, and remote access from any device. Enjoy seamless file viewing, projection, and even video surveillance capabilities.

Highlights
  • Auto Backup and Classification
  • Deep Learning Picture Recognition
  • Remote Access Anytime, Anywhere
  • Offline File Caching
  • One-Touch Multimedia Projection
  • Video Surveillance and Recording
  • Baidu Netdisk Integration
Features
Read full description

Hikbox is an app to manage smart storage device. With this app, you can share the information from the smart device to the mobile phone more conveniently, and realize the safe storage for photo, video, contacts, etc. what’s more, you can upload pictures in the camera or USB flash disk to this app automatically, and it is easy to be shared. 1. Auto Backup, Auto Classification It can enable auto backup of phone album quickly to release phone memory. The backup files can be classified automatically. You don’t need to worry about insufficient free space or phone loss. 2. Deep Learning, Picture Recognition Supports smart classification for pictures to People, Thing, Location with deep learning technology. 3. Accessible to You Anytime and Anywhere View or get files via mobile phone or computer anytime and anywhere. The intelligent compression on pictures requires less bandwidth, to provide a better experience. Support online playing with any mainstream multi-media format. 4. Download Offline Resource Control the home device remotely with the app to download blockbusters- no matter where you are. 5. One-Touch Multimedia Projection Support one-touch projection via multiple ways like DLAN/AirPlay, from which you can enjoy a high definition video at home. 6. Video Surveillance, Real-Time Recording Support connecting to the network camera to realize high definition and reliable video surveillance, and recording at home. 7. Connect Baidu Netdisk Support Baidu Netdisk, to which you can transmit local file, such as video, picture to Baidu Netdisk. 8. View Files Online and Offline View files in multiple formats (word, excel, ppt, pdf, text, etc.) online anytime and anywhere. Also you can cache files into your mobile phone and view them offline. 9. Decompress File Online Supports decompressing zip. or tar. format package within 4 GB online. Operating system: iOS 8.0 or above version. Compatible with iPhone, iPad, and iPod touch. Note: When Auto Background Backup is enabled, the GPS keeps connected even when the app is switched to background. The app will detect and backup latest album automatically if the location is changed. And more battery is consumed.

Screenshots

Synology MailPlus4 screens
HIKBOX4 screens

Verdict

The call

The clearest difference is rating: HIKBOX at 4.5 against Synology MailPlus's 3.8. HIKBOX also leads on update cadence (every 6 weeks vs every 4 months) and iOS requirement (13 vs 17.0). Synology MailPlus's advantage is review sentiment (43% vs 17%). On price, ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

HIKBOX holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 19 and 28 respectively. Written reviews complicate that: 43% of Synology MailPlus's written reviews are positive against 17% of HIKBOX's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Synology MailPlus ships an update every 4 months, HIKBOX every 6 weeks. The most recent releases landed on August 13, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Synology MailPlus versus HIKBOX: the parameters behind the verdict, then further details
ParameterSynology MailPlusHIKBOX
PriceFreeFree
Rating3.8 (19 ratings)4.5 (28 ratings) — better
Positive reviews42.5% of reviews — better16.7% of reviews
Number of ratings1928 — better
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013 — better
Further details — not scored
Size100 MB272 MB
Age rating4+4+
DeveloperSynology Inc.武汉海康存储技术有限公司

Customer experience

Synology MailPlus

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

HIKBOX

All ratings28 ratings
Positive89.3%
Neutral0.0%
Negative10.7%
Written reviews6 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

In-app purchases

None

Synology MailPlus

No in-app purchases

None

HIKBOX

No in-app purchases

Questions

Is Synology MailPlus free?
Synology MailPlus is free to download, with no in-app purchases.
Is HIKBOX free?
HIKBOX is free to download, with no in-app purchases.
Which has better reviews, Synology MailPlus or HIKBOX?
HIKBOX is rated higher. Synology MailPlus averages 3.8 out of 5 from 19 ratings, while HIKBOX averages 4.5 from 28 ratings.
Do Synology MailPlus or HIKBOX have ads?
Neither Synology MailPlus nor HIKBOX shows ads.
Which is updated more often, Synology MailPlus or HIKBOX?
Synology MailPlus ships an update every 4 months, and HIKBOX every 6 weeks. Most recently, Synology MailPlus was updated on August 13, 2026 and HIKBOX on September 23, 2026.

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