SparkMail for Android

1.0.1

SparkMail for Android: your NAS mail on tablet and phone, with the Postman and your own AI model — summaries, threats, quick replies, assisted writing.

A real Android app, not a web page: list and letter side by side on a tablet, one column on a phone, a paper theme for day and night.

Sign in with your DSM account, 2-step verification included; the linked mailbox opens and no password is stored on the device.

Sync, the Postman and the AI run on your NAS (SparkMail Server): they keep working while the phone sleeps.

Features

Inbox

Smart inbox

People, notifications and newsletters apart, new senders to accept, pinned, snoozed, swipe to finish or delete.

Postman

Every letter already read

The Postman flags phishing and scams, summarises the letter, spots appointments and drafts a reply.

Your model, not a cloud

Summary, translation, quick replies, tasks, phishing check and “Ask your mail” with the source letters.

Writing

Assisted writing

Write with AI in a chosen tone, fix mistakes, make it more formal, warmer or shorter; attachments, send later.

Safety

Pictures blocked

Pictures from the internet and trackers stay blocked until you allow them; failed SPF/DKIM/DMARC is flagged.

Notifications

Only people

New letters from people as notifications; newsletters and service notifications stay quiet.

What’s new

Version 1.0.1, 29 October 2026

Sign in to DSM with a YubiKey security key (USB-C or NFC), also without a password; the key PIN is asked when needed.
Clearer error messages when signing in.

Installation

1
Download
Get the .apk file below on the tablet or phone.
2
Allow the install
Android asks to allow installs from the browser or file manager: allow it for this file.
3
Sign in
NAS address, DSM user and password, then the verification code if DSM asks for it.

Questions and answers

What does the NAS need?

The SparkMail Server and SparkMail packages, and a mailbox linked to your DSM user.

Where does the AI run?

On the model set in SparkMail Server (AI Features): nothing goes to a cloud.

Which devices?

Android 8.0 or later, phones and tablets.

How do I check the downloaded file?

In Terminal, run the command below and compare the result with the SHA-256 fingerprint on the right. If a single character differs, do not open the file and write to us.

shasum -a 256 ~/Downloads/SparkMail-1.0.1.apk

Version: 1.0.1
Developer: IBCSC, Charleroi
Interface languages: Français, Nederlands, Deutsch, English, Русский, Español
Compatibility: Android 8.0 or later
Architecture: Android 8.0+
Licence: Free, no ads
SHA-256 fingerprint: 6c3d89ca3fac…7a9665