Find out more about your email sending limitations and settings.
Providing a Secure Internet Experience for All Our Customers
Comcast works hard to make sure your email experience is as easy and safe as possible. By placing limitations on the amount and size of email an account can send, we can help prevent spam accounts from filling your inbox.
Comcast has put the following sending limits in place for our residential XFINITY Internet customers:
- An email message can be sent to a maximum of 100 recipients. Any messages sent to over 100 recipients will not be delivered.
- XFINITY customers can email up to 1,000 recipients per day. If an account exceeds the 1,000-recipient limit, the account will not be able to send for the remainder of the day.
- The maximum size of an email cannot exceed 25 MB; this includes attachments, headers, text, formatting, etc.
Often, users are unaware their computers are being used to send spam. These limits allow us to cut down on the harm infected computers can cause on our network.
Blocked File Extensions
Comcast blocks certain file extensions that are often associated with spam or harmful software. The following email attachment types are not allowed:
Upgrade for Higher Daily Email Limits
If you send out a large number of legitimate, requested email messages per day, we encourage you to reduce your daily volume to 1,000 email recipients.
We also suggest upgrading to a business email account through Comcast Business Services, which provides higher daily email limits that may meet your needs.
Want to take the hassle out of setting up your email? With XFINITY Signature Support, our affordable premium support service, you can hand off the work to us. XFINITY Signature Support gives you round-the-clock access to live experts who can assist you with any tech need. They can even adjust your settings and fix your problems remotely, without you having to return to a store or service center. Learn more now.