How can honeypots be used in B2B emails to identify and filter out bot clicks effectively without impacting deliverability?
Summary
What email marketers say10Marketer opinions
Email marketer from Litmus warns against using purchased email lists, as they often contain spam traps and bot addresses. Building your list organically and implementing double opt-in can help prevent bots from entering your subscriber base, reducing the need for extensive honeypot measures.
Email marketer from Neil Patel's Blog suggests using a hidden form field in email signup forms or landing pages as a honeypot. If a bot fills this field, it's identified as spam. This method can be adapted for B2B emails by including a hidden link or form field that legitimate users wouldn't interact with.
Email marketer from Reddit suggests adding a very small, nearly invisible link (e.g., a comma) at the top of the email. Bots tend to click everything, while humans usually won't notice or click such a small link. This helps identify bots without significantly impacting deliverability.
Email marketer from Email Geeks suggests that bots do not differentiate between visible and non-visible links. Advocates for A/B testing with a small campaign to determine if bots crawl both text and HTML versions of emails. The honeypot link can be placed at the bottom of the email or in/under the footer. A hidden form input can also be used.
Email marketer from Email on Acid recommends A/B testing different honeypot methods to see which works best without affecting deliverability. They suggest experimenting with hidden links, invisible form fields, and analyzing click patterns to refine your bot detection strategy.
Email marketer from MarketingProfs recommends analyzing user behavior to identify bots. Factors include how quickly an email is opened after delivery, the number of links clicked, and the speed at which links are clicked. Bots typically act faster and more predictably than human users.
Email marketer from HubSpot encourages monitoring your sender reputation and domain health. While not directly a honeypot, maintaining a positive sender reputation helps ensure your emails reach the inbox. This involves avoiding spam-like practices and promptly addressing any deliverability issues.
Marketer from Email Geeks suggests that a honeypot doesn't need to be literally invisible; it can be a comma or similar hyperlink that humans are unlikely to click, but bots will. This avoids being a maliciously hidden link that would be flagged.
Email marketer from Mailchimp advises regularly cleaning your email list to remove inactive or suspicious subscribers. While not directly a honeypot, removing bots reduces the noise in your email metrics and improves overall deliverability. They suggest monitoring bounce rates and engagement metrics to identify potential bots.
Email marketer from ActiveCampaign highlights using automation to tag and segment users based on their interaction with honeypot links. If a user clicks a hidden honeypot link, they are automatically tagged as a potential bot and segmented into a separate reporting group.
What the experts say3Expert opinions
Expert from Spam Resource explains URIBLs (Uniform Resource Identifier Blacklists) can act as honeypots by identifying domains and URLs frequently associated with spam. While not directly implemented within an email, they can be integrated into your filtering system to identify and block bot clicks originating from known spam sources.
Expert from Word to the Wise, Laura Atkins, emphasizes the importance of maintaining clean email lists to avoid spam traps, which act as honeypots. She suggests using confirmed opt-in to ensure subscribers are genuine and engaged, reducing the likelihood of bots entering your list. Regular list cleaning by removing inactive subscribers also improves deliverability and reduces the impact of any bot activity.
Expert from Email Geeks shares how one organization sends over a billion emails a quarter, using 1x1 pixel transparent gifs hidden by CSS at the top of the email to identify clickbots without adverse deliverability. Clicks are monitored to identify bots, which are then placed in a temporary "clickbot jail" for reporting purposes.
What the documentation says5Technical articles
Documentation from Project Honeypot explains that honeypots can identify spambots by attracting them with fake links and form fields. In the context of B2B emails, a honeypot could be a link that's not visible to humans but is easily crawled by bots. Clicking this link marks the visitor as a bot.
Documentation from IETF defines the standards for SMTP and email protocols. Adhering to these standards helps improve deliverability and reduces the likelihood of being flagged as spam. This includes correctly configuring SPF, DKIM, and DMARC records, which authenticate your emails and prevent spoofing.
Documentation from Spamhaus details using honeypots to identify and block spammers at the network level. While more technical, this approach can inform your email honeypot strategy by providing insights into how spammers and bots operate, helping you create more effective traps.
Documentation from Stop Forum Spam details using honeypot fields in forms to detect automated submissions. They suggest including hidden fields that bots will fill out but humans won't see. Adapting this to B2B emails would involve including a hidden link or element that only bots would interact with.
Documentation from OWASP outlines various bot detection techniques, including honeypots. They recommend using server-side validation to confirm that honeypot fields remain empty for legitimate users. This helps filter out bots without penalizing genuine engagement.