iCloud: Add an attachment to an email
When you use iCloud Mail, you can attach one or more files, such as a photo or a Pages document, to an email message.
If you want to attach files that are too large to send in email, you can use Mail Drop. It delivers large attachments by uploading them to iCloud when you send your message. If recipients use the Mail app on iCloud.com, they see low-resolution versions of image attachments in the message and can download full-resolution images. For other kinds of attachments or other email apps, recipients see a link to download the attachments from iCloud. Recipients can download Mail Drop attachments for 30 days after they’re sent.
iCloud Mail offers to use Mail Drop if message size, including attachments, exceeds 20 MB.
Use Mail Drop for large attachments
If you want to use Mail Drop to deliver large attachments, make sure it’s turned on in iCloud Mail preferences.
In iCloud Mail, choose Preferences from the Action pop-up menu in the sidebar.
Click Composing, then select “Use Mail Drop when sending large attachments.”
Add an attachment
While writing a new email message, click the Attach button at the top of the message window.
Select the files you want to attach, then click the Choose button to begin uploading the files.
If your attachments are too large to send in email, iCloud Mail asks if you want to deliver the attachments using Mail Drop. If you agree, Mail Drop uploads the attachments to iCloud.
To select several adjacent files, click the first one, then Shift-click the last one. To select multiple nonadjacent files, Command-click them on a Mac or Control-click them on a Windows computer.
When the upload is complete, the attached files are listed above the message you’re writing.
To attach more files, repeat steps 1 and 2.
You can also simply drag files into your message.
Delete an attachment
In the Mail Message window, click the Delete icon next to the attachment’s filename.
For information about including original attachments in a reply, see Reply to or forward an email.