How to resolve spam filtering issues with seznam.cz?

Email marketer from Mailjet.com emphasizes the importance of email authentication (SPF, DKIM, DMARC) for improving deliverability to Seznam.cz. Proper authentication verifies the sender's identity, reducing the likelihood of emails being flagged as spam.

Marketer from Email Geeks asks if subject lines contain any special characters, caps, or emojis, explaining that at their previous company, subject lines with special characters ended up in the bulk folder instead of the inbox when sending to Seznam.

Email marketer from Email Geeks Slack Channel suggests checking if Seznam.cz requires the 'precedence:bulk' header, as Centrum did in the past. Also, they recommend registering domains to the Seznam postmaster tool for useful information and points out that Seznam is part of the Validity Universal FBL.

Email marketer from Emailonacid.com highlights the importance of maintaining a clean email list by removing inactive or invalid addresses. Sending to engaged subscribers improves sender reputation and reduces the chances of being marked as spam by Seznam.cz.

Email marketer from Email Geeks Slack Channel suggests examining subject lines for special characters, caps, or emojis, as these caused emails to land in the bulk folder instead of the inbox when sending to Seznam.cz in his previous experience.

Marketer from Email Geeks shares that Centrum required the precedence:bulk header a few years back and suggests checking if it’s the case for Seznam. They also recommend registering the domains to the Seznam postmaster tool for useful info and notes that Seznam is included in the Validity Universal FBL.

Email marketer from Validity.com explains that Seznam.cz participates in feedback loops (FBLs). Implementing and monitoring FBLs helps identify and address spam complaints from Seznam.cz users, improving sender reputation and deliverability.

Email marketer from Sender.net explains that gradually increasing sending volume (IP warm-up) helps establish a positive sender reputation with Seznam.cz. A sudden spike in email volume can trigger spam filters.

Expert from Email Geeks suggests trying the precedence:bulk header, but isn’t convinced it’s a definitive solution, noting that it wasn’t used in SFMC when they worked there, and SFMC delivered mail to Seznam.

Expert from Email Geeks Slack Channel advises trying the 'precedence:bulk' header but expresses doubt about it being a complete fix, noting that it wasn't used in SFMC when he worked there, despite SFMC delivering emails to Seznam.cz.

Expert from Word to the Wise explains the importance of actively monitoring your sending reputation with Seznam.cz. By tracking metrics like complaint rates and blocklist status through Seznam.cz's postmaster tools, you can identify and address issues before they significantly impact deliverability.

Documentation from Seznam.cz details its Postmaster Tools, offering insights into domain reputation, spam complaints, and delivery errors. Using these tools aids in diagnosing and resolving spam filtering issues specific to Seznam.cz.

Documentation from DMARC.org outlines how DMARC policy helps control the use of your domain in email and protects recipients from fraudulent email. Implementing and monitoring DMARC is key to ensuring email deliverability and building trust with email providers like Seznam.cz.

Documentation from RFC details that the Precedence header can influence mail handling. While 'precedence: bulk' was historically used to suggest lower priority, its effectiveness varies. Seznam.cz's specific interpretation should be verified.