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How to stop a bot from joining my email list 100s of times per day

  • March 22, 2024
  • 11 replies
  • 616 views

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Hello, tow week ago I started getting 100s of spam emails joining my newsletter per hour. It seems to be the same person… the email address starts with the same name with then a string of numbers and letters.

 

They literally join my email list several times per minute!

 

They have added over 8000 emails to my list in just a couple weeks. I have surpassed all of them, and now turned on double authentication when someone joins my list. But is there any other way to stop this? Has anyone else had this happen?

 

Thanks,

 

Jason V.

Best answer by Bobby

Hi @goalcrazy,

Welcome to the community!

Sorry to hear about the list bombing activity that you’ve been experiencing. Enabling double opt-in in the list settings is one of the best measures you can take. So, it’s good to hear that you’ve done that.

An additional measure you can take, depending on the on-site form they’re submitting through, is to enable a technology such as reCAPTCHA to filter out spam/bots before they can submit the form.

Hope this response is helpful.


Cheers,
Bobby

11 replies

Bobby
Partner - Silver
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  • Champion & Partner
  • 58 replies
  • Answer
  • March 22, 2024

Hi @goalcrazy,

Welcome to the community!

Sorry to hear about the list bombing activity that you’ve been experiencing. Enabling double opt-in in the list settings is one of the best measures you can take. So, it’s good to hear that you’ve done that.

An additional measure you can take, depending on the on-site form they’re submitting through, is to enable a technology such as reCAPTCHA to filter out spam/bots before they can submit the form.

Hope this response is helpful.


Cheers,
Bobby


Taylor Tarpley
Community Manager
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  • Community Manager
  • 2148 replies
  • March 29, 2024

Hi there @goalcrazy,

 

On top of @Bobby’s great recommendations, I want to share that our Klaviyo team is aware that there has been an uptick in these kinds of incidents lately and we are developing features to combat this easier very soon. So keep your eyes peeled!

 

-Taylor 


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  • Contributor I
  • 2 replies
  • April 17, 2024

I am experiencing this as well and it’s super frustrating. When can we expect those new features?


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  • Partner
  • 1 reply
  • April 29, 2024

Same! What’s causing this stuff to happen? It’s really frustrating and it’s costing us money. It’s using up our monthly email send limits & profile count. 


Drazdauskas
Contributor IV
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  • Contributor IV
  • 7 replies
  • May 24, 2024

Hi there @goalcrazy,

 

On top of @Bobby’s great recommendations, I want to share that our Klaviyo team is aware that there has been an uptick in these kinds of incidents lately and we are developing features to combat this easier very soon. So keep your eyes peeled!

 

-Taylor 

Any update on this?


Taylor Tarpley
Community Manager
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  • Community Manager
  • 2148 replies
  • May 25, 2024

No not yet!! I will update when we have news!

 

-Taylor


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  • Contributor I
  • 1 reply
  • June 10, 2024

any update?


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  • Contributor I
  • 1 reply
  • February 10, 2025

No not yet!! I will update when we have news!

 

-Taylor

Just checking on whether there is any news on further measures to stop bot activity?

On Friday a bot started creating abandoned checkouts on our Shopify store with random number gmail accounts. We came to work on Monday to see 130,000 new customer records in Klaviyo, none opted in. As it happens, almost all were supressed already as they’d triggered our abandoned cart flow and the email was an instant hard bounce. But the thought of what 130,000 hard bounces does to our sender reputation is a worry! The bot is still going, a new attempt every 2 seconds… we’ve turned off our flow for now. 


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  • Contributor I
  • 1 reply
  • May 21, 2025

Hello,

is there any update on this?

We have hundreds of fake profiles and they keep coming in. It has overwhelmed our capacity and is making it impossible for us to be able to work properly.


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  • Active Contributor IV
  • 30 replies
  • June 12, 2025

@Taylor Tarpley any update here? We are having this issue as well. My biggest concern is that it is affecting our deliverability as there are no workarounds to address that. I can suppress thousands of emails daily, which is annoying, but works. However, there is no way to prevent them from receiving that initial double opt-in email which is bouncing and tanking our deliverability. 


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  • Contributor II
  • 3 replies
  • June 16, 2025

We’ve been having this same issue for over 8 months and despite me trying to capture all of them in a segment and excluding them from all our automatic emails, they are still list bombing.