Aruba.it Business Mail, € 5.00/yr. on Linux Emails

The Business Mail service adds new features to the Webmail features, allowing you to manage your emails professionally and effortlessly.
This service will be associated with all your domain email accounts.

Configure other accounts
Synchronize contacts/events
BAM feature: send big attachments
Integrated Chat
Free support 24/7

The main features are:
Configure other accounts Up to 4 email accounts (also accounts other than Aruba accounts) can be configured in the Webmail, so you can check multiple email accounts simultaneously.
Web storage For each account you get storage space on the server, the same amount of space you get with your account, in which you can upload and save documents, images, videos and music. The web storage also provides an image and text editor, which allows you to create, edit and save files and documents directly in your Webmail.
As the web storage corresponds to the size of your email account, you can expand this at any time by purchasing the GigaMail service.
BAM feature
(Big Attachment Message) Send big attachments with no effort. When your attachments exceed the size limit set from the control panel, these will not be included in the message, but sent to the recipient as a simple link from which the files can be downloaded.
This way the files will not occupy space on your email account, nor risk not being delivered to the recipient for being "too large".
Chat Chat service integrated in the Webmail which allows the @domainname.it accounts to easily communicate with each other. The postmaster account can enable or disable the chat on all the email accounts or just on certain accounts.
Synchronize contacts/events To synchronize and keep events and contacts always updated between your phone, email client and Webmail.
Corporate address book The address book which you can manage and change through the postmaster account, to add contacts and groups which can then be shared with all the domain email accounts.
Corporate calendar Evolved version of the traditional calendar which allows you to, manage one specific calendar through the postmaster account, and share it with all the domain email accounts.
Multiple calendars Ideal for configuring multiple personal calendars to then manage separately, according to your needs.