In the Inmarsat system it's possible to transmit an e-mail. The only thing you have to keep in mind is that you send it via a LES which has been controlled by a provider offering this service. When sending an e-mail you have to prepare the message conforming to the prescribed protocol of the provider of the LES. One of the providers supporting this e-mail service is e.g. Stratos Mobile Networks.
Stratos Mobile Networks offers on its web-site information telling how to transmit an e-mail via the Inmarsat C system, which is called C-mail.

Practise on the Inmarsat C simulator

• Select 'File' in the Menubar on the top of the screen by using the arrow keys followed by 'Enter'.
• Select 'New ASCII' by using the arrow keys followed by 'Enter'.
• now the cursor is blinking on the top of the Text field and the text can be added by typing it out on the keyboard.
• When the text has been entered you can transmit it immediately (Alt,T combination to enter the transmit menu) or save it (Alt,F,S combination to enter the file save menu).
• Go to the address book by touching the spacebar.
• Select the desired e-mail destination using the arrow keys and press 'Enter' or add a new one to the addressbook.
  
• Go to the Land Station using the arrow buttons and touch the 'Space Bar' and then select a Land Earth Station using the arrow keys and confirm your choice by pressing 'Enter'.
• Press the arrows keys to move the highlight to the 'MORE E-mail ' field. In the 'More E-mail' window standard additional email entries such as “Cc”, “Bcc” and “Subject” are made available. Only entries supported by the selected Internet Service Provider will be present.
  
• Fill in the necessary extra information using the arrow key to move between the different fields. Press Enter once on OK to return to the normal transmit window.
• Go to Send using the arrow keys and press 'enter' (or enter password if protected).
• The E-mail will now be transmitted to the LES and after the successful delivery you will get a confirmation, if you've chosen this option.
• During the transmission of the message the indication light 'Send' on the transceiver is blinking and the status field on the screen shows 'Sending'.

The process of delivery of messages can be monitored in the 'transmit log'.