Comcast Corporation is a global telecommunications conglomerate headquartered in Philadelphia, Pennsylvania. It is the largest broadcasting and cable television company in the world and is the leading email delivery/ISPs in the United States.
Comcast has a separate company by the name of Xfinity that provides Comcast subscribers and users with a dedicated email service. Backed by the leading internet service in the country, there is a substantial customer base of Comcast email services that are attracted by the singular account facility to manage all the different products. Comcast also provides a certain level of exclusivity which appeals to their customers.
Recent Phishing Alerts
There have been some serious phishing scares for Comcast this year. According to multiple sources, there have been reports of email notices mimicking Comcast Support. These scams claim to be from Comcast and inform users that their accounts are temporarily suspended and will need to be “unlocked” as sensitive information was compromised.
Due to such Phishing scams, Comcast has initiated strict policies for email marketers and bulk mail senders. It is now essential to demonstrate good reputation with the following factors in place:
- IP Address Reputation
- Domain Keys Identified Mail (DKIM) Signatures
- Autonomous System Number (ASN) Reputation
- Domain-based Message Authentication Reporting and Conformance (DMARC) authentication
While users can still report you as spam, it’s a good idea to adhere to the above guidelines in order to make sure you stand a chance.
Email Delivery: Feedback Loop
Feedback Loops (FBLs) are great for email marketers in identifying which of their campaigns are getting complaints from users. Comcast has a dedicated FBL section which helps senders in getting any complaints around their email campaigns. All FBLs come from the following IPs:
- 66.45.29.177
- 66.45.29.178
- 66.45.29.179
Additionally, FBL messages are sent from the [email protected] email address.
Email Delivery: Whitelist
Unlike the majority of leading email service providers, Comcast email does not have a whitelist program. However, they do encourage users to contact Comcast security to check if there is a blocking issue in place for a specific domain due to any prior spam reports. The Comcast Customer Security Assurance department can be reached at 1-888-565-4329 during normal business hours (6:00 am-2:00 pm EST).
Email Delivery: Postmaster Tools
Comcast has a fantastic Postmaster Tool that can help you analyze and monitor the health of your email campaigns and figure out routes to help you reach the recipient’s inbox. Click here to visit the Postmaster Tool page and find out more.
Comcast Delivery Tips
Additionally, below are some essential delivery tips to help you stay out of the spam folders and maximize good email delivery:
- It is important to have a clear opt-in method in place. Senders need to have explicit permission from the users they are targeting in order to avoid getting marked or reported as a ‘spammer’.
- Email marketers should make it a habit to check the sending IPs against blacklists. Not taking this seriously can damage your business reputation. Check out our blog on Blacklists for additional information on this subject.
- Having a clear ‘unsubscribe’ button on the bottom of your emails is very important. If the recipients cannot see this button and want to unsubscribe, there is a high chance that they will simply mark you ‘spam’.
Want to see how the MailMonitor suite of tools can help your business with your email deliverability performance? Contact us and request a demo!
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