Summary
TrustPilot widgets can trigger bounces with Yahoo due to a combination of factors, including Yahoo's stringent spam filtering, the sender's reputation, the widget's implementation, and authentication issues. Yahoo's filters are sensitive to third-party content, code, and links, particularly when sender or the widget provider have poor reputations. Addressing these bounces requires verifying sender authentication (SPF, DKIM, DMARC), assessing and improving sender reputation, ensuring correct widget implementation, and potentially using alternative widget implementations (like static images with links) or reaching out to Yahoo and TrustPilot support for further assistance.
Key findings
- Yahoo's Strict Spam Filters: Yahoo employs stringent spam filters that are sensitive to third-party content, especially widgets, code, and links, from senders or domains with questionable reputations.
- Importance of Sender Reputation: A sender's reputation significantly impacts deliverability. A poor sender reputation can lead to bounces and emails being marked as spam.
- Widget Implementation Issues: Incorrectly implemented widgets, particularly those using JavaScript or dynamic content, can trigger spam filters and cause rendering problems.
- Authentication Deficiencies: Lack of proper email authentication (SPF, DKIM, DMARC) makes it harder for Yahoo to verify the sender's legitimacy, increasing the likelihood of bounces.
- Blocklisting: Poor sender reputation can result in being added to blocklists, further impacting email deliverability.
Key considerations
- Implement Proper Authentication: Ensure correct implementation and configuration of SPF, DKIM, and DMARC to authenticate emails and demonstrate legitimacy to Yahoo.
- Assess and Improve Sender Reputation: Monitor sender reputation using tools like Google Postmaster Tools and take steps to improve it by cleaning email lists, reducing spam complaints, and authenticating emails.
- Verify Widget Implementation: Carefully verify the TrustPilot widget implementation, ensuring the code is correctly embedded and doesn't significantly alter email formatting.
- Alternative Widget Implementation: Consider using a static image with a link to TrustPilot reviews instead of the widget to avoid triggering spam filters.
- Contact TrustPilot Support: Reach out to TrustPilot support for an up-to-date and compliant code block and guidance on best practices for widget implementation.
- Contact Yahoo Support: If issues persist, contact Yahoo support for clarification, potential whitelisting, and to understand their specific filtering criteria.
- Check Blocklists: Check if your IP address or domain is on common blocklists and take steps to get removed if necessary.
- Vet Widget Provider: Carefully vet any third-party widget provider, ensuring they have a good reputation and follow deliverability best practices.
- Monitor Deliverability: Continuously monitor email deliverability metrics to identify and address any issues promptly.
What email marketers say
9 marketer opinions
TrustPilot widgets can cause bounces with Yahoo due to a combination of factors, including Yahoo's aggressive spam filtering, poor sender reputation, issues with widget code (JavaScript or dynamic content), and general concerns about third-party content. Solutions include improving sender reputation, ensuring proper email authentication (SPF, DKIM, DMARC), using static images with links instead of the widget, checking blocklists, contacting Yahoo support for clarification, and ensuring the widget is correctly implemented.
Key opinions
- Yahoo's Spam Filters: Yahoo's spam filters are sensitive to third-party content, HTML code, Javascript and links within emails, and may flag domains associated with TrustPilot widgets, especially from senders with poor reputations.
- Sender Reputation: Poor sender reputation can cause emails containing TrustPilot widgets to bounce or be marked as spam. Monitoring and improving sender reputation is crucial.
- Widget Implementation: Incorrect widget implementation, problematic Javascript, or dynamic content within the widget can trigger spam filters. Static images linking to TrustPilot can be a safer alternative.
- Blocklisting: A poor sender reputation could lead to being added to blocklists. Checking IP addresses and domains against these lists is recommended.
Key considerations
- Authentication: Ensure proper email authentication (SPF, DKIM, DMARC) to improve deliverability and demonstrate legitimacy to Yahoo.
- Alternative Implementation: Consider using static images with links to TrustPilot reviews instead of the actual widget to avoid triggering spam filters.
- Contact TrustPilot: Reach out to TrustPilot for an up-to-date and compliant code block for the widget.
- Contact Yahoo Support: If issues persist, contact Yahoo support for clarification and potential whitelisting.
- Monitor Deliverability: Closely monitor email deliverability after making changes to ensure the issue is resolved and new problems aren't introduced.
- Check Code: Check the code, and ensure it isn't altering the HTML in a way that is triggering spam filters.
Marketer view
Email marketer from MXToolbox blog shares that a poor sender reputation may have caused you to be on a blocklist, impacting email deliverability. Recommends checking your IP address and domain against common blocklists.
23 Dec 2022 - MXToolbox
Marketer view
Email marketer from Mailjet blog explains that a poor sender reputation can cause any emails, including those with Trustpilot widgets, to bounce or be marked as spam. Recommends monitoring sender reputation with tools like Google Postmaster Tools and taking steps to improve it by authenticating emails, cleaning the email list, and ensuring a low spam complaint rate.
1 Nov 2021 - Mailjet
What the experts say
2 expert opinions
Experts agree that TrustPilot widgets can cause bounces with Yahoo due to a combination of factors related to sender reputation, the widget's domain reputation, and Yahoo's stringent filtering policies. It's critical to verify sender authentication, assess the widget provider's reputation, and actively monitor deliverability to identify and address any issues.
Key opinions
- Third-Party Content Impact: Third-party widgets, especially those from domains with mixed reputations, can negatively impact deliverability, particularly with ISPs like Yahoo.
- Importance of Reputation: Yahoo and other ISPs rely on sender and domain reputation for filtering email. A poor reputation of the widget or sender's domain can trigger bounces.
- Authentication Matters: Proper sender authentication (SPF, DKIM, DMARC) is critical for deliverability and helps ISPs verify the email's legitimacy.
Key considerations
- Vet Widget Provider: Thoroughly vet the TrustPilot widget provider and ensure they maintain a good reputation.
- Monitor Deliverability: Actively monitor email deliverability to identify any issues related to the TrustPilot widget.
- Check Authentication: Verify the sender's authentication setup (SPF, DKIM, DMARC) to ensure it's properly configured.
- Assess Reputation: Assess the sender and domain reputation using tools like MXToolbox.
Expert view
Expert from Word to the Wise shares that Yahoo and other ISPs increasingly rely on sender reputation and authentication (SPF, DKIM, DMARC) to filter email. Confirms that if the domain or IP address associated with the Trustpilot widget has a poor reputation, it can trigger bounces. Recommends checking the sender's authentication setup and reputation using tools like MXToolbox.
3 Apr 2023 - Word to the Wise
Expert view
Expert from Spam Resource explains that third-party widgets and content, especially those from domains with mixed reputations, can negatively impact deliverability, particularly with more sensitive ISPs like Yahoo. Recommends thoroughly vetting the widget provider and monitoring deliverability closely when using such content.
24 Sep 2024 - Spam Resource
What the documentation says
5 technical articles
Documentation from TrustPilot, Yahoo, DKIM.org, RFC-Editor and DMARC.org highlights that TrustPilot widget issues and Yahoo bounces can stem from incorrect widget implementation, suspicious content, poor IP/domain reputation, and a lack of proper email authentication (SPF, DKIM, DMARC). Solutions involve verifying widget code, ensuring proper authentication, checking against Yahoo's guidelines, and improving overall sender reputation.
Key findings
- Widget Implementation: Incorrect TrustPilot widget implementation can cause rendering issues or trigger spam filters.
- Yahoo's Blocking Criteria: Yahoo blocks emails with suspicious links, unusual formatting, or originating from IPs/domains with a poor reputation. Check postmaster.yahooinc.com for details.
- Email Authentication (DKIM): DKIM authentication helps verify the sender's identity and improve email deliverability by preventing spoofing.
- Email Authentication (SPF): SPF records declare valid email sources for a domain. Ensure the SPF record is correctly configured to include all sending sources, including TrustPilot.
- Email Authentication (DMARC): DMARC builds on SPF and DKIM to ensure emails are authenticated and provide instructions to receiving servers on handling unauthenticated emails.
Key considerations
- Verify Widget Code: Ensure the TrustPilot widget code is correctly embedded and doesn't significantly alter email formatting.
- Check Yahoo Guidelines: Review Yahoo's guidelines at postmaster.yahooinc.com to understand their blocking criteria and ensure compliance.
- Implement DKIM: Implement DKIM authentication to verify the sender's identity and improve deliverability.
- Configure SPF: Ensure the SPF record is correctly configured to include all sending sources, including any third-party services.
- Implement DMARC: Implement a DMARC policy to leverage SPF and DKIM and provide instructions for handling unauthenticated emails.
Technical article
Documentation from DMARC.org explains that DMARC authentication builds on SPF and DKIM to ensure that emails are authenticated and that receiving mail servers know what to do with emails that fail authentication checks. Suggests implementing a DMARC policy can help improve email deliverability and reduce the risk of email spoofing.
26 Jul 2024 - DMARC.org
Technical article
Documentation from TrustPilot Support explains that incorrect widget implementation can cause rendering issues or trigger spam filters. Advises verifying the widget code is correctly embedded, the domain is whitelisted if necessary, and the widget isn't altering email formatting significantly. Provides code examples and troubleshooting steps.
12 Mar 2022 - TrustPilot
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