EarthLink is an Internet Service Provider (ISP) based in the United States with services including email, web hosting, and data security.
Infrastructure
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Region |
North America: United States |
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Domains |
Earthlink.net |
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Connection and throughput |
Earthlink does not disclose connection and throughput limits. Recommended settings:
The volume of messages allowed by Earthlink servers may vary depending on your sending reputation and other factors. |
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Complaint feedback loop (FBL) application |
Apply by email; see details below |
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Postmaster site |
Deliverability best practices and troubleshooting support
- Use a recognizable brand name in the friendly from to ensure subscribers recognize you as the sender. Subscribers are more likely to mark a message as spam for senders they do not recognize.
- Set expectations with subscribers about the frequency of email they will receive, your sending address, and what your email looks like.
- Follow the instructions on the Earthlink postmaster site to sign up with the Earthlink complaint feedback loop. Suppress all subscribers that complain. Earthlink uses complaint rates as a major factor in filtering decisions.
- Configure all IPs with valid reverse DNS (PTR) records.
- Monitor Eartlink's SMTP response codes when encountering delivery issues. The SMTP response codes provide additional information to help you troubleshoot.
- Implement a prominent unsubscribe link in all email with a one-click unsubscribe process and immediately honor all unsubscribe requests.
- Have a list hygiene strategy in place to remove or suppress unknown and unengaged users from your email list.
- Look up and delist all IPs and domains from the following blocklists, including any third party domains. Be sure to fix the cause of any blocklistings prior to submitting a delisting request or listings will recur.
- Bypass Earthlink's spam filter by advising all Earthlink subscribers to add your sending address to their address book.
- Do not use a dynamic IP address. Use a dedicated or shared IP when sending to Earthlink.
- Ensure that your email complies with the Request for Comment (RFC) 2821 and 2822 specification protocols.
Complaint feedback loop application process
Email fblrequest@abuse.earthlink.net with the subject line "Feedback Loop Request", and provide the following information:
- Company name and contact information
- Single IP addresses or valid CIDR ranges in a list, carriage return delimited
- Email address to send complaint reports
- Administrative contact email address
- Type of provider (Internet service provider, email service provider, web host, or other.)
