Spam attacks: How can I block fake email addresses to subscribe?

Hi @Akselpd,

Sorry to hear you’re having to deal with this headache.

Perhaps the following ideas were included when you mentioned you’re using filters in segments or using list clean-up, but I’d also consider creating a segment using the fakemail criteria to gather all of the bot emails. Something like the following: email contains  > @fakemail.com. You can separate the fake email domains using “OR” to scoop up as many of the fake domains possible. Follow this up by bulk suppressing the segment. Here's an article with step-by-step instructions on How to Bulk Delete or Suppress Email Contacts in Klaviyo.
 
Also, to prevent fake emails from entering your flows in the future, consider adding a flow filter to each of your flows with the exclusion criteria: properties about someone: email doesn't contain @fakemail.com. Make sure you’re using an “AND” separator to separate multiple fake email domains i.e. email doesn’t contain fake domain X AND email doesn’t contain fake email Y etc. That will prevent potential deliverability issues of bounced emails from your flows for fake email addresses. 

 
I hope that’s a helpful start. In addition to this, I recommend continuing to work with support on strategies and solutions - they’ll be able to have a closer look at the specific emails and provide a more tailored segment definition to help mitigate the impact of these fake profiles. It would also be great to hear if anyone in the community has any alternative strategies we haven’t thought of yet!

Thanks for being a community member.