Why has there been a sudden drop in Yahoo and MS CFLs?

Email marketer from Quora shares that spam filters operate using algorithms that analyze various email attributes like sender reputation, content, and authentication. The user mentions if you are sending bulk emails, make sure you authenticate your email using SPF and DKIM to improve deliverability and avoid being flagged as spam.

Email marketer from EmailAnalytics Blog explains that sudden drops in deliverability can stem from various sources, including changes in mailbox provider algorithms, increased spam complaints, or IP blacklisting. It suggests monitoring sender reputation, warming up IP addresses, and authenticating emails.

Email marketer from ReturnPath says that one of the primary reasons for emails landing in the spam folder is poor sender reputation, stemming from high bounce rates, spam complaints, or being listed on blacklists. Maintain clean email lists and adhere to best practices to protect your sender reputation.

Email marketer from Email Geeks confirms same issue is happening.

Email marketer from Email Geeks shares that they could see the same trend of drop in overall CFL's.

Email marketer from MailSen Forum shares that Yahoo has changed their spam policy which leads to a drop in CFL. The user explains that due to lower email open rates, Yahoo is now interpreting emails as spam.

Email marketer from SendGrid shares that you can improve your email deliverability by implementing feedback loops (FBLs) to monitor and address recipient complaints. The marketer also shares that it is important to act promptly to resolve any issues raised through feedback loops to maintain a positive sending reputation.

Email marketer from Litmus recommends monitoring your sender reputation using tools such as Google Postmaster Tools and Microsoft SNDS, and ensure your domain authentication is properly set up with SPF, DKIM, and DMARC to maintain a positive sender reputation.

Email marketer from Email Geeks explains that it’s not just Yahoo, but MS too experiencing CFL issues.

Email marketer from Email Geeks shares that they see the issue and are working on it and that things are coming back online now. They also mention that it's possible not all votes during that time were processed, and will not be at this point.

Email marketer from StackOverflow explains that a sudden increase in spam folder placement could be caused by a number of factors including; Sending from a new IP address without properly warming it up, a sudden spike in email volume, a change in email content that triggers spam filters, or an increase in spam complaints from recipients.

Email marketer from Email Geeks reports that they are seeing FBLs from yahoo again, but MS is still out, then later reports MS FBLs are coming back now too.

Email marketer from Email Geeks responds that they are also noticing a drop in Yahoo CFLs as of yesterday and seeing 0 spam complaints for clients that typically receive some daily.

Email marketer from Reddit shares that sometimes, emails end up in spam due to the recipient's email client settings. The user explains that aggressive spam filters, or accidentally marking similar emails as spam in the past can impact the placement of future emails.

Expert from Word to the Wise (Laura Atkins) explains that if FBLs are not processed correctly, senders lose visibility into user complaints, which impacts their ability to manage sender reputation and can lead to increased spam filtering.

Expert from Spam Resource (John Levine) explains that feedback loops provide senders with data on spam complaints, allowing them to remove complainers from their lists. The expert mentions that interruptions to FBL data can impact senders' ability to maintain list hygiene.

Documentation from Microsoft Support explains that if your emails are being marked as spam, it could be due to issues with your IP address reputation, domain reputation, content, or authentication. They detail how to check your sender score and use tools like SNDS and JMRP to monitor your sending reputation with Microsoft.

Documentation from Google Postmaster Tools explains that to prevent mail to Gmail users from being blocked, senders must authenticate their email with SPF, DKIM, and DMARC. Google documentation also explains that senders should keep their spam rate reported in Postmaster Tools below 0.10% and avoid sudden spikes. Ensure sending IPs have valid forward and reverse DNS records (PTR records).

Documentation from Mailchimp recommends segmenting your email list and sending targeted content to engaged subscribers to improve sender reputation and decrease spam complaints. The Documentation also explains that keeping lists clean, asking users to re-subscribe, and removing unengaged users are good practice.

Documentation from SparkPost explains that sudden drops in email deliverability can often be attributed to changes in email provider algorithms or spam filtering techniques. The documentation explains that checking feedback loops and reputation monitoring tools is useful.