Use Mail on your Mac

1. Click New Message  in the Mail toolbar, or choose File > New Message.
2. Enter a name, email address, or group name in the "To" field. Mail gives suggestions based on your contacts and messages on your Mac and devices signed into iCloud.¹
3. Enter a subject for your message.
4. Write your email in the body of the message. 
   • To add an attachment, drag an attachment to the body of the message. Or choose File > Attach Files, choose an attachment, then click Choose.
   • To change your font and format, use the options at the top of the message window.
   • Beginning with macOS Mojave, it's even easier to add emoji to your messages. Just click the Emoji & Symbols button  in the toolbar at the top of the message window, then choose emoji or other symbols from the character viewer.
5. Send or save your message:
   • To send, click the Send button  or choose Message > Send. 
   • To save your message as a draft for later, close the message, then click Save.

• To reply to a single person, click Reply , type your response, then click Send .

• To reply to everyone on a group email, click Reply All , type your response, then click Send .

• To forward a message to other people, click Forward , type your response, then click Send . 

You can create Mailboxes to organize your emails into folders.

1. Open Mail, then choose Mailbox > New Mailbox from the menu bar.
2. In the dialog that appears, choose the location for the Mailbox.
   • Choose your email service (like iCloud) to access your Mailbox on your other devices, such as an iPhone signed into the same email account.
   • Choose On My Mac to access your Mailbox only on your Mac.
3. Name the mailbox and click OK.

If you don't see the mailboxes sidebar, choose View > Show Mailbox List. To show or hide mailboxes from an email account, move your pointer over a section in the sidebar and click Show or Hide.

To move a message from your Inbox to a mailbox:

• Drag the message onto a mailbox in the sidebar.
• In macOS Mojave, you can select the message, then click  Move in the Mail toolbar to file the message into the suggested mailbox. Mail makes mailbox suggestions based on where you've filed similar messages in the past, so suggestions get better the more you file your messages.
  

To delete a message, select a message, then press the Delete key.

To automatically move messages to specific mailboxes, use rules.

Use the Search field in the Mail window to search by sender, subject, attachments, and more. To narrow your search, choose an option from the menu that appears as you type.

To attach a file to your message:

• Drag an attachment to the body of the message.
• Choose File > Attach Files, choose an attachment, then click Choose.

You can use Markup to draw and type directly on an attachment, like an image or PDF document.²

1. Click the Attach button  or choose File > Attach Files in the message window.
2. Choose an attachment, then click Choose File. 
3. Click the menu icon  that appears in the upper-right corner of the attachment, then choose Markup. 
   • Use the Sketch  tool to create freehand drawings.
   • Use the Shapes  tool to add shapes like rectangles, ovals, lines, and arrows. 
   • Use the Zoom  tool in the Shapes menu to magnify and call attention to a part of an attachment.
   • Use the Text  tool to add text.
   • Use the Sign  tool to add your signature.
4. Click Done.