What impact does being listed on UCEPROTECT have on email deliverability?
Summary
What email marketers say12Marketer opinions
Email marketer from Mailjet shares that blocklists can severely impact email deliverability, leading to emails being rejected or sent to the spam folder. Being listed on a major blocklist can damage sender reputation.
Email marketer from HubSpot answers that while a listing on UCEPROTECT could have some negative consequences for a sender, a good way of minimizing impact is to adopt best practices for email sending (e.g. keep lists clean, authenticate emails, send engaging content).
Email marketer from SenderGuardian explains the process of getting removed from blocklists, which may involve contacting the blocklist provider and demonstrating improved sending practices.
Email marketer from Reddit shares that while a UCEPROTECT listing can cause some deliverability issues, many major ISPs and email providers do not heavily rely on this blocklist, so the impact may be limited.
Email marketer from Litmus recommends using deliverability testing tools to check if your emails are being blocked by certain lists and to identify potential issues with your email setup.
Email marketer from EmailToolTester explains that spam filters use blocklists as one factor in determining whether an email is considered spam, meaning that a listing can significantly impact deliverability rates.
Email marketer from Talos Intelligence highlights the importance of actively monitoring your IP and domain reputation to identify and address any potential blocklist listings promptly.
Marketer from Email Geeks explains that Level 1 means it's something going on from your IP and they tell you what exactly on their website, Level 2 and 3 means you have "bad neighbors".
Marketer from Email Geeks shares their experience of sending email from an AWS data center, resulting in all IPs being listed on UCE Protect 3 (and sometimes 2), but they haven't noticed any impact from it.
Marketer from Email Geeks shares that UCEprotect is not widely used and suggests ignoring it.
Email marketer from Spamhaus highlights the difference between various blocklists and their impact on deliverability, emphasizing the importance of understanding the specific reasons for being listed.
Email marketer from StackOverflow comments that UCEPROTECT listings are not universally considered a major indicator of spam and their impact varies depending on the recipient's email provider and spam filtering setup.
What the experts say5Expert opinions
Expert from Email Geeks states that no one who cares about email deliverability pays attention to UCEPROTECT.
Expert from Spam Resource shares that knowing what your IP address is doing, and actively looking for signs of listing is important in having high deliverability
Expert from Word to the Wise explains that while UCEPROTECT is a blocklist, its effectiveness and adoption vary, and being listed doesn't automatically mean emails will be blocked everywhere; many major ISPs and corporations have stopped using their data.
Expert from Email Geeks mentions that UCEProtect is used a little more widely in some countries (like Germany) but a lot of the folks using it are small domains with very few users.
Expert from Email Geeks mentions that AWS, Sendgrid, Mailchimp, and Sparkpost have been listed at levels 2 and 3 in the past.
What the documentation says4Technical articles
Documentation from RFC Editor specifies that proper email authentication (SPF, DKIM, DMARC) is crucial for improving email deliverability and can help to mitigate the impact of blocklist listings.
Documentation from Google Postmaster Tools explains that Google considers multiple factors, including blocklists, when assessing the sending reputation of an IP address or domain. A poor sending reputation can lead to emails being marked as spam or blocked.
Documentation from UCEPROTECT FAQ explains that a listing in UCEPROTECT-Level1 indicates that the listed IP address has sent spam. Listing in Level 2 or 3 indicates a compromised network, due to too many spammers using the network.
Documentation from Microsoft explains that being on a block list can prevent your emails from reaching Outlook.com or Hotmail inboxes. Microsoft uses various block lists to filter spam and protect users.