How to Attach a Document to a Comcast Email From the Internet

By Randall Blackburn

XFinity provides Comcast subscribers with Internet email service.
i Medioimages/Photodisc/Photodisc/Getty Images

Comcast subscribers can attach a document to an email message and send the document to one or more designated recipients through Comcast’s Internet email application. Using the Comcast XFinity Web-based control panel, Comcast subscribers can access their email accounts with just an Internet connection and a Web browser. Subscribers can send and receive email, and attach documents to outgoing messages.

Open the XFinity site in a Web browser (see link in Resources). Log in to your Comcast account with your user ID and password. The XFinity Welcome screen opens.

Click the “Email” icon on the XFinity Welcome screen. Your inbox will open.

Click the “Compose” button on the inbox's top navigation bar. The New Email window opens.

Type the email address of the recipient into the “To:” field, and then type a subject for the message into the “Subject” input box.

Type a message in the email body section.

Click the “Add Attachment” link on the navigation bar to open the file selection dialog box.

Click the “Browse” button to open the file navigation dialog box.

Navigate to the location of the file you want to add as an attachment. Click on the file and then click “Open.”

Repeat the process by clicking the “Browse” button to attach additional files. Click “Add More Attachments” if you want to add more than five files. Click the “Remove” link next to a document ti delete it from your email.

Click the “Attach” button to add all of the attached files to your email message.

Click the “Send” button. The email message, along with all attachments, will be sent to the designated recipient(s).


An email message -- headers, text, formatting and file attachments -- cannot exceed 25MB in size. Comcast recommends the total of all attachments should not exceed 20MB.