If you want to send your email, you have to choose one or more email addressees.

Click on "choose the addressees". You'll see this screen:

If you want to choose a contact you just have to click his or her name or photograph. You'll recognise the contacts you have selected immediately, they are highlighted with a blue stripe as you can see in the lower image:  

You can send the same letter to one or more friends, you just have to select all the contacts you want to send the letter to. If you can't see the address you're looking for, click on "next page" or "previous page" to browse your contact list.

If you didn't insert the address in your address book yet, you have to:

click on “add here and in the address book new addressee"

write in the white area close to "Name" the name of you want to remember your contact with

write in the white area next to "mail address" your contact's email address. An email address is always composed by a text, the "at" symbol @, followed by further text, a point and two or three letters. E.g. Indirizzo e-mail protetto dal bots spam , deve abilitare Javascript per vederlo

  click on "save name and address": the new addressee will appear in your contact list

When you are satisfied with your selection, to continue click on "click to proceed".

The addressee you have chosen will appear in the envelope underneath the "Choose the addressees" button, in the box "addressees".

If you have chosen a the wrong contact, or if you have changed your mind, just select the name of the addressee and the button "delete address" to delete. The message will not arrive to that person.

Now you have chosen your addressees, just click the "Send" button to complete the operation and send your mail.