Nextcloud for Email

Your inbox stays the same. Your files stay in Nextcloud.

Attach, protect and share files through your own Nextcloud from Outlook, Apple Mail and Thunderbird. No new app to learn, no OneDrive detour, no big-bang migration.

Part of the Sendent Nextcloud Workspace

Three email clients

Outlook, Apple Mail and Thunderbird on one Nextcloud sharing layer.

Files stay in Nextcloud

Your files stay on your own server, not in OneDrive or SharePoint.

No attachment ceiling

Share large files, limited only by your Nextcloud and server.

Nothing new to learn

People keep writing email the way they always have.

How it works

Same compose window. A different place for your files.

Start in your email client

Write your email as usual in Outlook, Apple Mail or Thunderbird.

Attach securely

Pick a file and share it through Nextcloud, with a password and expiry date where you need them.

Keep files in Nextcloud

The file stays in your organisation's own Nextcloud environment, under your policies.

Control recipient access

Recipients open the file through a link you can expire or revoke after sending.

Choose your email client

One Nextcloud sharing approach across a mixed email landscape.

Run one client or all three side by side. Every team keeps its familiar inbox while sharing follows the same rules

Nextcloud for Email
Desktop and web add-in · Windows, Mac, Web

Nextcloud for Outlook

Attach files to or from Nextcloud, secure the entire email, and start a Nextcloud Talk meeting without leaving the compose window.

Secure Mail for the email body
Nextcloud Talk meetings in one click
Guest accounts and revocable links
Per-file and per-link activity tracking

Two variants. The Windows-only add-in adds presence sync, Talk room picking and quick join, advanced theming and archiving.

Nextcloud for Mail
MailKit extension and menu bar app · macOS 15+

Nextcloud for Apple Mail

Mac users share local files through Nextcloud straight from the Apple Mail toolbar, without switching to another email application.

Multiple files, chunked upload
Quota checked before upload
Passwords and expiry from server policy
Credentials kept in macOS Keychain

Nextcloud for Email
Thunderbird extension · Windows, macOS, Linux

Nextcloud for Thunderbird

Pair the leading open-source email client with Nextcloud-controlled sharing, from a Nextcloud menu right in the compose toolbar.

Share local or existing Nextcloud files
Secure Mail for the email body
Password, expiry and revocation
Central extension deployment

Where do your files actually go?

A normal attachment is gone once you hit send. A Nextcloud link isn't.

Email client on its own

Traditional attachments or OneDrive by default

With Sendent – Nextcloud Mail

Nextcloud-controlled sharing

Nextcloud

Open-source collaboration platform

Files stay in the Nextcloud instance you already run. Sendent adds a secure bridge from the email clients your people already use.

Familiar front end, Nextcloud back end: a hybrid setup that can be your end state, or a part of your journey to digital sovereignty.

Feature support by client

Compare Outlook, Apple Mail and Thunderbird.

Feature	Outlook	Apple Mail	Thunderbird
Platform
Operating systems	Windows, Mac, Web	macOS 15 and newer	Windows, macOS, Linux
Languages	EN, NL, DE, FR, IT, ES (+DA, RU on Windows)	EN	EN, NL, DE, FR
File sharing
Upload and share local files	Supported	Supported	Supported
Share files already in Nextcloud	Supported	Not available	Supported
Password protection	Supported	Supported	Supported
Expiration dates	Supported	Supported	Supported
Anonymous public links	Supported	Not available	Supported
How the recipient gets the link	In the email	Separate Nextcloud notification	In the email
Secure Mail & meetings
Email body protection	Supported	Not available	Supported
Nextcloud Talk meetings	Supported	Not available	Not available

Outlook is available as a cross-platform add-in (Windows, Mac, Web) and a Windows-only add-in with extra features. Full details are in each product sheet. SupportedNot available

Sendent – Nextcloud Workspace

Email is one piece of a connected hybrid workspace.

Nextcloud MS Teams Integration

Browse, upload and share Nextcloud files in Teams chats and channels, and help prevent accidental uploads to OneDrive.

Nextcloud for Exchange

Bidirectional calendar and contact sync between Exchange or Microsoft 365 and Nextcloud, with configurable privacy modes.

Secure your workflow, effortlessly

Start with one team. Expand at your own pace.

Roll Nextcloud for Email out to a single department or the whole organisation. Your people keep their inbox; your files stay under your control.

Read the documentation →

Or email sales@sendent.com