You can create an email message by selecting the New button from the Mail Toolbar or the Actions | New Email Message Menu action from the Menubar from the Mail Activity.
When you select the New button or Actions | New Email Message Menu action, the software opens a Mail Editor window for you to create the message, as follows:-

Mail Editor Window
The new email message is stored in the Drafts mail folder, until you select the Send button (12) in the Mail Editor Window.
1. The Mail Editor Window displays Mail Editor buttons at the top of the Window, which include relevant options to print, to display print preview, and display printer options.
2. From, Reply To - the From, and Reply To fields are automatically filled with the first of your email accounts. You use the drop down list for each field to select a different email account if required.
3. Priority, Read Receipt - you can choose a Priority and a Read receipt for the new message using the fields supplied. Priorities can be Highest, High, Normal, Low, or Lowest. A read receipt will ask the recipient to notify you when they have read the email.
4. To, CC - you need to specify in the To and CC fields who will receive the message by either typing their email addresses in the fields or selecting contacts using the Contact Selection button displayed to the left of the To field. Separate email addresses in the To and CC fields using a comma ",". Clicking on the Contact selection button displays the Contact selection window, where you can select email addresses from the list displayed. (see Selecting Contacts).
5. Subject - provide a subject title for the message in the Subject field provided.
6. Attached - you can attach files stored in orchidmedia to the message using the Add Attachments button displayed to the left of the Attached field (see Attaching Files), or bring up the Attached pop-up menu by right clicking on the mouse over the Attached field to select the Import from... Menu action. Use The Import from... Menu action to attach files stored externally on folders on your computer.

Attached Popup Menu
7. Text Editing functions
The Text Editing functions provide the means to format the text in (8) using different typefaces, character sizes, styles and colors. You can also indent and justify the text, add bullet points, and add number paragraphs. The cut/copy/paste buttons can be used with external applications to introduce text from the Windows clipboard, or to edit the text created. Undo and Redo buttons are also supplied to undo and redo changes to the text.
9. Plain, HTML - select the Plain or HTML buttons to send your message using unformatted or formatted text. Plain text messages do not contain any formatting commands, whereas HTML messages can contain any of the Text formatting features shown by the functions in (7).
10. Cancel - you can cancel the creation of the new message using the Cancel button.
11. Save - you can save the new message to the Drafts folder and close the Mail Editor window using the Save button.
12. Send - once you have provided the From and To fields with valid email addresses, you use the Send button to send the new message. The software moves the new message to the Sending Mail folder, ready for the next time that you select the Actions | Send Mail or Actions | Transmit Mail Menu actions, or when it next sends mail automatically.
Further reading from Creating Mail: