Comparison

Synology MailPlus vs eM Client

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

eM Client

This app unifies email, calendar, tasks, contacts, and notes into a single, AI-enhanced platform. It offers advanced features typically found on desktop, including instant message translation and robust encryption, for seamless management of multiple accounts on your iPhone and iPad.

Highlights
  • AI-enhanced email drafting and replies
  • Unified inbox for email, calendar, tasks, contacts, and notes
  • Instant message translation
  • PGP and S/MIME encryption
  • Quick import from desktop app
  • Mail-tracking pixel detection
  • Snooze and Undo Send features
Read full description

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

Screenshots

Synology MailPlus4 screens
eM Client4 screens

Verdict

The call

The clearest difference is update cadence: eM Client at every 10 days against Synology MailPlus's every 4 months. eM Client also leads on iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume 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

On the App Store both sit at effectively the same score — 3.8 for Synology MailPlus against 3.7 for eM Client. Both are backed by a comparable volume of ratings — 19 and 48 respectively. Written reviews are what separate them: 43% of Synology MailPlus's written reviews are positive against 48% of eM Client's.

UpkeepUpdate frequency

Synology MailPlus ships an update every 4 months, eM Client every 10 days. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Synology MailPlus versus eM Client: the parameters behind the verdict, then further details
ParameterSynology MailPluseM Client
PriceFreeFree
Rating3.8 (19 ratings) — better3.7 (48 ratings)
Positive reviews42.5% of reviews48.3% of reviews — better
Number of ratings1948 — better
Update frequencyEvery 4 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size100 MB178 MB
Age rating4+4+
DeveloperSynology Inc.eM Client

Customer experience

Synology MailPlus

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

eM Client

All ratings48 ratings
Positive60.4%
Neutral12.5%
Negative27.1%
Written reviews356 reviews
Positive48.3%
Neutral18.0%
Negative33.7%

Bugs and requests

Synology MailPlus

Not enough reviews yet to summarise bugs or 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
Show 1 more
  • Actions from notifications (archive, mark as read, etc.)

In-app purchases

None

Synology MailPlus

No in-app purchases

None

eM Client

No in-app purchases

Questions

Is Synology MailPlus free?
Synology MailPlus is free to download, with no in-app purchases.
Is eM Client free?
eM Client is free to download, with no in-app purchases.
Which has better reviews, Synology MailPlus or eM Client?
Synology MailPlus is rated higher. Synology MailPlus averages 3.8 out of 5 from 19 ratings, while eM Client averages 3.7 from 48 ratings.
Do Synology MailPlus or eM Client have ads?
Neither Synology MailPlus nor eM Client shows ads.
Which is updated more often, Synology MailPlus or eM Client?
Synology MailPlus ships an update every 4 months, and eM Client every 10 days. Most recently, Synology MailPlus was updated on October 8, 2026 and eM Client on October 15, 2026.

Other comparisons