Slide Powerful Exchange email, shared contacts & calendars and the latest versions of your favourite Office apps on any device.

Get started with our free setup and enjoy downloadable apps and & OneCloud inlcuded
Microsoft 365 Compare Packages

Work Faster With CrossBox

fast, intuitive, premium communications suite 

Amazing Email Compser

Effortlessly write professional and content-rich emails with CrossBox's simple to use and agile email composer.

You can format your email's text in detail, insert images, drag-n-drop files and even edit the HTML source itself.

Sign your Email off with a pro signature! Choose from over 50 ready to use, professional looking email signatures that help you leave a permanent impression.

You can also create a custom signature with images and links by using our robust HTML editor.

Attachments Without The Pain

Not knowing what's in that .docx or .xlxs file without actually downloading it is now a thing of the past. Documents, audio, and even video files are fully previewable within CrossBox.

Quickly sharing an email attachment wasn't possible till CrossBox moved in. You can now promptly and securely share an email attachment with a co-worker, your team or anyone in the world.

Send attachments of ANY size using the built in CrossBox file drive.  Simply upload to your drive and Email a link to the attachment to your contact.  Send big files simply & easily without using third party services.

Email Support 24/7/365

Reach out anytime for help with your mail services


Support Tickets

A support ticket is the best way to get the help you need; simply submit a ticket from your Spire Client Area and one of our support analysts will be happy to help you.


Live Chat

Chat to us anytime from anywhere on our website or app and our helpful support team will instantly assist you, often providing resolution whilst you wait.


Phone Support

Feel free to call our support line on 0330 043 4001 where one of our support representatives will be happy to help.  Lines available between 7am - 7pm