Do new or uncommon domain extensions (.club, .online, .tech, .app) affect email deliverability?

Email marketer from StackExchange (Webmasters) responds, pointing out that some spam filters assign scores based on various factors, including the domain extension. Less common extensions may start with a slightly higher 'risk' score, but this can be overcome by good sending practices.

Email marketer from Mailjet Blog shares that the domain extension *can* indirectly influence deliverability. While not inherently bad, some newer TLDs may be more frequently associated with spam or low-quality websites, impacting sender reputation if not carefully managed. They recommend verifying the TLD's reputation and building a positive sender history.

Email marketer from Neil Patel's Blog explains that while the domain extension itself may not be a primary factor, using less common extensions can sometimes raise suspicion with spam filters, particularly if the domain is new and lacks a positive reputation. He suggests focusing on building a strong sender reputation and ensuring proper email authentication.

Marketer from Email Geeks suggests that if an existing .app domain has successfully sent mail, the domain itself is less likely to cause deliverability problems. He attributes .app's issues to its use in cloud-based platforms that are heavily abused and provides a spam percentage for .netlify.app (96%).

Email marketer from Litmus Blog, Chad S. White, explains that sender reputation is key, and a newer domain extension will likely have a weaker reputation initially. Building trust with mailbox providers through consistent sending practices and proper authentication is essential to avoid deliverability issues.

Email marketer from Reddit (r/emailmarketing) responds by saying that a domain's reputation is more critical than the extension itself. They add that a new .com domain with poor sending practices will face deliverability issues, similar to a .xyz domain. Focus on building a clean sending history.

Marketer from Email Geeks provides statistics for .io (13% spammy all time, 56% spammy in last 30 days) and .app (79% spammy all time). He also notes that subdomain abuse can skew these percentages.

Marketer from Email Geeks recommends avoiding gTLDs unless they've been used for a long time and provides percentage of spammy domains for .club (97%), .online (92%), and .tech (92%).

Marketer from Email Geeks suggests avoiding practices typically associated with spammers, such as using unusual TLDs.

Marketer from Email Geeks shares a link to Spamhaus to check if a TLD is considered abusive, and notes that abuse often depends on how easily spammers can acquire domains (e.g., .xyz). They consider .net and .co fine, but suggest caution with .club and similar TLDs.

Email marketer from EmailToolTester shares that, while it's not a direct cause, using uncommon domain extensions could lead to deliverability problems. They explain that because spammers tend to use these domains, ISPs can block them automatically, and suggest choosing a .com if you can.

Email marketer from SendPulse Blog notes that while the domain extension isn't the sole determinant, newer or less reputable extensions *can* negatively impact deliverability. They advise researching the extension's reputation and ensuring the domain is properly authenticated (SPF, DKIM, DMARC) to establish trust with email providers.

Expert from Email Geeks explains that .com, .net and .org also have high abuse levels

Expert from Email Geeks explains that some ISPs and filtering companies may block "weird" TLDs due to a bias against commercial TLDs. This bias is because the companies running them prioritize profit and lack effective compliance, and may engage in practices like offering large numbers of free domains with purchases.

Expert from Email Geeks suspects the same pattern holds for .com domains, where a newly registered domain sending email in volume is often flagged as spam.

Expert from Word to the Wise, Laura Atkins, shares the importance of selecting a domain carefully and monitoring reputation. A domain can become problematic if it becomes an issue.

Expert from Word to the Wise, Steve Jones, responds that the TLD itself isn't the issue; the reputation of senders using that TLD is what matters. A flood of spammers using a new TLD can give it a bad reputation, impacting everyone on that TLD.

Documentation from Google Workspace Admin Help shares that, although not explicitly mentioned, it strongly emphasizes proper email authentication (SPF, DKIM, DMARC) and maintaining a good sender reputation. This implies that the technical configuration and sending behavior outweigh the impact of the domain extension itself.

Documentation from RFC-Editor.org, explains that the technical specifications governing email (SMTP, RFC 5321) don't explicitly discriminate against specific domain extensions. Email systems rely on DNS to resolve domain names and that all validly registered domain names should function technically the same for email routing.

Documentation from Microsoft Docs, while discussing bulk email best practices, it does not explicitly mention domain extensions. However, it heavily stresses the importance of authentication, list hygiene, and sender reputation, suggesting these are more influential factors than the extension itself.