How to resolve Suddenlink .net email spam foldering issues during IP warming?
Summary
What email marketers say9Marketer opinions
Email marketer from Email Deliverability Forum explains that Suddenlink.net is very strict with reputation, so make sure you have SPF, DKIM, and DMARC configured correctly. Also, avoid sending to unengaged users.
Email marketer from GlockApps explains that use seed list testing tools to check deliverability to Suddenlink and identify specific issues causing spam placement.
Email marketer from Email Geeks suggests checking for an X-CM-Analysis header in seed accounts to investigate spam foldering issues with Suddenlink, and offers to analyze a sample IP address.
Email marketer from Litmus shares that maintain strict list hygiene by removing inactive subscribers and regularly validating email addresses to reduce bounce rates.
Email marketer from StackExchange recommends checking if your IP address is on any blacklists. Many ISPs will reject or spam-filter email from blacklisted IPs. Use tools like MultiRBL to check.
Email marketer from Sender suggests that setting up feedback loops with Suddenlink can help identify and address issues causing spam complaints.
Email marketer from Email on Acid explains that engaging subscribers with relevant, personalized content can improve sender reputation and reduce spam complaints.
Email marketer from Mailjet shares that spam filters often analyze content. Avoid using spam trigger words, excessive capitalization, and URL shorteners in your emails.
Email marketer from Reddit shares that gradually increasing sending volume to Suddenlink during IP warming is essential. Start with very low volumes and monitor results closely.
What the experts say3Expert opinions
Expert from Email Geeks clarifies that <http://suddenlink.net|suddenlink.net> is Suddenlink's own hosted mail service and not related to Microsoft.
Expert from Word to the Wise explains that proper IP warming is crucial; Suddenlink may be particularly sensitive to sudden increases in volume. Segment your list and gradually increase volume over several weeks, carefully monitoring deliverability metrics.
Expert from Spam Resource responds that Suddenlink often has aggressive spam filters. Monitor your sending reputation closely using their feedback loops (if available) or third-party reputation monitoring services.
What the documentation says3Technical articles
Documentation from Spamhaus explains that Suddenlink might be using the Spamhaus Block List (SBL). Check if your sending IP is listed and follow Spamhaus's delisting process if necessary.
Documentation from RFC-Editor specifies that ensure your sending IP has a properly configured reverse DNS (PTR) record that matches your sending domain. Many ISPs, including Suddenlink, check for this.
Documentation from Microsoft Support explains that sender reputation is crucial; Suddenlink may be filtering based on a low sender reputation established during IP warming. Monitor bounce rates and feedback loops to improve reputation.