How to remediate spam blocks from wp.pl without upgrading to a paid delivery service?

Marketer from Email Geeks shares that wp.pl was a big provider of data to the DCC corpus, so running emails through that to see if it lights up is recommended. DCC is a fuzzy pattern matching service that uses a distributed network to identify emails similar to known bad emails.

Email marketer from Litmus shares A/B testing your email content and subject lines can improve engagement. Higher engagement rates signal to email providers that your emails are valuable, reducing the chance of being marked as spam.

Email marketer from Neil Patel's Blog shares that cleaning your email list regularly is crucial. Removing inactive subscribers reduces your bounce rate and improves your sender reputation, which can help avoid spam blocks.

Email marketer from GMass says to avoid using spam trigger words in your email content. Words like 'free,' 'guarantee,' or excessive use of exclamation points can trigger spam filters.

Email marketer from Mailchimp shares that using a dedicated IP address can improve deliverability. This gives you more control over your sending reputation, as it's not shared with other senders.

Email marketer from webmasters.stackexchange.com says to confirm that your DKIM record actually validates. Use a third-party DKIM validator to ensure that your DKIM signature is correctly set up and verifiable.

Email marketer from Reddit user u/email_expert answers that ensuring your WordPress site is sending emails correctly using SMTP (Simple Mail Transfer Protocol) with a plugin like WP Mail SMTP can greatly improve deliverability. This avoids using the default PHP mail function, which is often flagged as spam.

Marketer from Email Geeks explains that the solution to spam blocks depends on the cause and to consider that non-Polish IPs have lower thresholds than in country ones. If sales are mentioned, it likely means a threshold has been reached rather than a specific spam indicator.

Marketer from Email Geeks shares that when troubleshooting PL ISPs, the most common reply is to pay for delivery. This won't solve the spam issues, but being in their premium channels might get your problem looked at.

Email marketer from Stackoverflow user user123 answers that setting a proper `Return-Path` header in your email can improve deliverability. This header specifies where bounce messages should be sent, and can help email providers verify the sender's identity.

Email marketer from DigitalOcean advises that using a separate subdomain for sending marketing emails can help protect your main domain's reputation. If the subdomain's reputation is damaged, it won't affect your core business operations.

Email marketer from Sendinblue recommends warming up your IP address. Gradually increasing your sending volume over time helps establish a positive sending reputation with email providers.

Expert from Word to the Wise Team explains that using feedback loops (FBLs) to identify and remove subscribers who mark your messages as spam is essential for maintaining a good sending reputation and reducing spam complaints. This helps to proactively address deliverability issues.

Expert from Spam Resource explains that identifying the cause of the block is paramount. Check your sending practices, list hygiene, and content. Once identified, address the root cause before requesting delisting. Many blocks are temporary and self-resolve once the offending activity ceases.

Expert from Word to the Wise Team explains that monitoring your IP and domain reputation is important. Using reputation monitoring services can provide insights into how your sending infrastructure is viewed by ISPs and blocklist providers, allowing you to address issues before they significantly impact deliverability.

Documentation from Google explains that monitoring your sender reputation using Google Postmaster Tools can provide insights into why your emails are being blocked. If your reputation is low, it indicates that Google (and potentially other providers like wp.pl) view your emails as spammy.

Documentation from RFC explains that ensuring your sending IP address has a valid reverse DNS (rDNS) record is critical. An rDNS record maps an IP address back to a domain name, which helps email providers verify the sender's authenticity.

Documentation from Mailjet explains that you should authenticate your email with SPF, DKIM, and DMARC. These are standard email authentication methods that help prove to email providers like wp.pl that you are who you say you are, reducing the likelihood of being flagged as spam.

Documentation from SparkPost suggests signing up for feedback loops (FBLs) with email providers like wp.pl if possible. FBLs provide data on when users mark your emails as spam, allowing you to remove those users from your list and improve your sending practices.

Documentation from Microsoft explains that avoiding URL shorteners can help. Spam filters often flag emails containing shortened URLs as suspicious, so using full URLs can improve deliverability.