Summary
Resolving spam filtering issues with Seznam.cz requires a multi-faceted approach. This includes investigating the 'precedence:bulk' header requirement, utilizing Seznam.cz's postmaster tools for monitoring reputation and deliverability, and participating in feedback loops (FBLs). Additionally, scrutinizing subject lines for special characters and ensuring robust email authentication (SPF, DKIM, DMARC) are crucial. Maintaining a clean email list, warming up IP addresses gradually, and continuously monitoring sending reputation contribute to improved deliverability and trustworthiness with Seznam.cz.
Key findings
- Bulk Header: The 'precedence:bulk' header may be required; investigate Seznam.cz's current policy.
- Postmaster Tools: Seznam.cz offers postmaster tools to monitor domain reputation and troubleshoot delivery problems.
- Subject Line Content: Special characters, caps, or emojis in subject lines can trigger spam filters.
- Email Authentication: Proper SPF, DKIM, and DMARC implementation improves deliverability.
- Feedback Loops: Participating in FBLs allows for addressing spam complaints.
- List Hygiene: Maintaining a clean and engaged email list is vital.
- IP Warmup: Gradually increasing sending volume helps establish a good reputation.
- Reputation Monitoring: Continuous monitoring of sender reputation is necessary to identify and mitigate issues.
Key considerations
- Seznam-Specific Rules: Seznam.cz may have unique filtering rules; stay informed about them.
- Testing: Test the impact of changes (e.g., adding the 'precedence:bulk' header).
- Tool Familiarity: Become proficient with Seznam.cz's postmaster tools.
- Proactive Monitoring: Establish a routine for proactively checking reputation and addressing complaints.
- DMARC Policy: Implement and maintain a DMARC policy to prevent domain spoofing.
- List Segmentation: Segment your list to send relevant content to engaged users.
- Sending Practices: Adhere to email best practices to maintain a good sender reputation.
What email marketers say
8 marketer opinions
To resolve spam filtering issues with Seznam.cz, various strategies are recommended. These include checking for the need of a 'precedence:bulk' header, using the Seznam postmaster tool, and ensuring participation in feedback loops (FBLs). Additionally, it's crucial to examine subject lines for special characters, caps, or emojis that might trigger spam filters. Proper email authentication (SPF, DKIM, DMARC), maintaining a clean email list, and gradually increasing sending volume (IP warm-up) are also vital for improving sender reputation and deliverability to Seznam.cz.
Key opinions
- Bulk Header: Check if Seznam.cz requires the 'precedence:bulk' header, as it was a requirement for Centrum in the past.
- Subject Line: Examine subject lines for special characters, caps, or emojis that could trigger spam filters.
- Feedback Loops: Seznam.cz participates in feedback loops (FBLs). Monitor and address spam complaints received through FBLs to improve deliverability.
- Postmaster Tools: Register and utilize Seznam's postmaster tools for insights into domain reputation and potential delivery issues.
- Email Authentication: Implement SPF, DKIM, and DMARC for proper email authentication to improve deliverability.
- List Hygiene: Maintain a clean email list by removing inactive or invalid addresses to improve sender reputation.
- IP Warm-up: Gradually increase sending volume (IP warm-up) to establish a positive sender reputation.
Key considerations
- Header Requirements: Verify Seznam.cz's current requirements for specific headers, such as 'precedence:bulk,' as these may change over time.
- Subject Line Sensitivity: Be mindful of the content and formatting of subject lines, as Seznam.cz's spam filters may be sensitive to certain elements.
- FBL Implementation: Implement a process for monitoring and responding to feedback loop complaints from Seznam.cz users.
- Tool Utilization: Familiarize yourself with and regularly use Seznam's postmaster tools to gain insights into deliverability issues.
- Authentication Setup: Ensure proper configuration of SPF, DKIM, and DMARC records for your sending domain.
- List Maintenance: Establish a routine for regularly cleaning your email list to remove inactive or invalid addresses.
- Sending Volume: Monitor and gradually increase sending volume, especially when starting to send emails from a new IP address or domain.
Marketer view
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.
8 Dec 2022 - Mailjet.com
Marketer view
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.
25 Jun 2023 - Email Geeks
What the experts say
3 expert opinions
Experts suggest addressing spam filtering issues with Seznam.cz by trying the precedence:bulk header, while acknowledging it might not be a definitive solution. Monitoring sender reputation using Seznam.cz's postmaster tools for metrics like complaint rates and blocklist status is also crucial for identifying and resolving issues proactively.
Key opinions
- Bulk Header: Trying the 'precedence:bulk' header may be worth exploring but is not a guaranteed fix.
- Reputation Monitoring: Actively monitoring sending reputation with Seznam.cz is essential for early detection and resolution of deliverability problems.
- Postmaster Tools: Utilizing Seznam.cz's postmaster tools helps track complaint rates and blocklist status.
Key considerations
- Header Effectiveness: Evaluate the actual impact of the 'precedence:bulk' header, as its effectiveness can vary.
- Tool Familiarization: Familiarize yourself with Seznam.cz's postmaster tools and establish a routine for regularly checking your sending reputation.
- Proactive Action: Develop a process for promptly addressing issues identified through reputation monitoring to prevent significant deliverability impact.
Expert view
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.
20 Jul 2022 - Email Geeks
Expert view
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.
23 Jul 2022 - Email Geeks Slack Channel
What the documentation says
3 technical articles
Resolving spam filtering issues with Seznam.cz involves utilizing Seznam.cz's Postmaster Tools for insights into domain reputation, spam complaints, and delivery errors. While the Precedence header (specifically 'precedence: bulk') can influence mail handling, its effectiveness varies, necessitating verification of Seznam.cz's specific interpretation. Implementing and monitoring DMARC policy is crucial for controlling domain use, protecting against fraudulent email, and building trust with email providers like Seznam.cz.
Key findings
- Seznam Tools: Seznam.cz's Postmaster Tools provide valuable data on domain reputation, spam complaints, and delivery errors.
- Precedence Header: The Precedence header's effectiveness is variable, so verify its impact with Seznam.cz.
- DMARC Implementation: Implementing and monitoring DMARC policy enhances email deliverability and protects against fraudulent emails.
Key considerations
- Tool Exploration: Actively explore and utilize all features of Seznam.cz's Postmaster Tools for comprehensive insights.
- Header Verification: Confirm how Seznam.cz interprets and handles the Precedence header, testing its impact on deliverability.
- Ongoing Monitoring: Establish a routine for continuous monitoring of DMARC reports to identify and address potential issues.
Technical article
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.
12 Oct 2022 - Seznam.cz
Technical article
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.
12 May 2022 - DMARC.org
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