APPs for Mobile Devices

Currently, a mobile application to access a Carbonio CE mailbox is available.

As new components like Chats and Files will be available for Carbonio CE, dedicated mobile app will be made available as well.

Mobile clients: Mail

Carbonio Mail is the official and free app for Carbonio and Carbonio-CE users.

Carbonio Mail mobile app is available for both Android and iOS. Allows you to access all your Carbonio E-mails, calendars, and contacts from your mobile devices.

These are the main features of the Carbonio Mail app:

  • Complete e-mail management with default Inbox, Drafts, Junk, and Trash folders

  • Send later functionality

  • Customizable swipe actions from the preview of the email

  • Text formatting options

  • Set priorities to the outgoing emails

  • Attachment management

  • Create new folders

  • Manage your settings

  • Manage contacts

  • Full management of calendars and appointments

  • Search for emails or contacts in the unified Search tab

  • Dark theme

  • Tag e-mails


Carbonio Mail is available for download on the Google Play Store:

It is required that the Android version be equal to or higher than 5.0

iOS version is available for download on the Apple’s App Store:

It is required that the iOS version be equal to or higher than 14

Carbonio Mail configuration

The mobile application is enabled by default on all users. These are the only server side requirements:

  • Port 443/HTTPS must accessible from the Internet

  • A valid SSL/TLS certificate must be available for the domain


    Directions to install a valid certificate can be found in section Deploy an SSL certificate.

  • The user with whom you log in via the Carbonio CE Mail App must be existing and active

Login via Carbonio Mail

In order to use Carbonio Mail App, follow these steps:

  1. Download the application (see the Download section)

  2. Activate (see the Notifications section)

  3. Login via app


Fig. 3 Login screen of Carbonio Mail app.

In order to login, in Fig. 3 provide the following date:

  • E-mail account name

  • Password

  • Server name, which must match the FQDN. It’s not necessary to enter the port number as 443 / HTTPS is set by default.


Carbonio Mail mobile app connects to the server through an HTTPS secure connection and Carbonio responds with its certificate. This process (called SSL handshake) provides data integrity and data privacy to the information transferred between the client and the server, which is encrypted, provided that the SSL certificate is active and not expired.


Android devices manufacturers have strict default settings on which apps can display notifications, sometimes causing the Carbonio Mail App not to be able to notify new messages.

To make sure that your device allows all required notifications, follow these steps:

  1. Log out from the app

  2. Access the device’s Settings, then enter the Apps & Notifications menu

  3. Select the Carbonio Mail app from the list of all installed apps

  4. Enter the Notifications section

  5. Enable the notifications (first option on the top)

  6. Enable the banner notification on the Appointment and E-mail subsections

  7. Log back in

Notifications should now work!


For push notifications to work on the device, the Carbonio CE server must be able to communicate with the service on port 443 (The exact URL to which notifications are sent is: )