Email attachment troubleshooting basics

We know how vexing it can be when otherwise simple things refuse to cooperate. Try these troubleshooting tips for attaching and sending files. 

Trouble sending attachments

Your email service comes with a few size limitations. Attachments, particularly ones with images and/or lots of data, can get really big, really fast. Big attachments are a problem for a couple of reasons. Some email accounts restrict the size of individual messages. Messages that are too big don't get sent, which might be what you're experiencing. Alternately, if your email account is full (has reached its size limit), you can't send (or receive) ANY messages until some messages are deleted.

To determine if either of these situations pertain to you:

Step 1: Check the size limit of your account.

  •,, or
    • Email size limit: 20MB
    • "Send To" limit: 100 contacts
    • Webmail send limit: 100 per hour
    • SMTP send limit: 500 per hour
    • IP based email send limit:50 per 5 minutes
    • Email box size: 15MB
    • Email size limit: 10MB
    • "Send To" limit: 50 contacts
    • Send limit: 100 per hour

Step 2: If you're over your size limit, delete all items in your outbox, and try sending the email and attachment again.

Note: If you need to send a file larger than your server will allow, search the Internet for "how to send large files." If you cannot see the extension on an attached filename, search the Internet for "how to view a computer file extension." If you want to get your CenturyLink account to work with your email management program (e.g., Outlook), read "How to set up your email to go through POP3 and SMTP."

Trouble opening attachments

If you are having trouble viewing an attachment, make sure you have the appropriate software to open and read the file extension. A file extension is the set of characters, usually 3 or 4 in length that follow the main filename. In the filename "ChemistryNotes.txt" the extension is ".txt". Documents with .txt extensions can be opened on most computer systems. However, this is not the case with all file types. For instance, files with a .doc extension can only be opened using Microsoft Word (or similar) software.

Some files, when opened from an attachment, can harm your computer. For more information on these files, search the Internet (e.g., "recognizing dangerous file types"). If you've opened an attachment and think you may have inadvertently infected your computer with a virus, read "Keep your computer healthy with PC diagnostic and security scans."

For additional assistance, chat with us.  We're here to help.

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