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Bounce rates - mailbox unavailable

  • September 20, 2024
  • 1 reply
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  • Problem Solver I

Hi,

Since some weeks I'm seeing an increased bounce rate in all of my campaigns, for Gmail. We're sending to multiple countries in Europe. 

When looking into the “Deliverability report > Bounce details” I see that they're categorized as ‘Mailbox Unavailable'. Do you also experience this and what could we do about this? 

In addition, 
In the campaigns for the Netherlands, I'm seeing a high bounce rate for Ziggo,nl, Home.nl, Upcmail.nl, and chello.nl. Anyone else experiences this and ideas on how to deal with those? 
 

Thanks! 

 

 

Best answer by Omar

I think most of these providers are using similar spam protection solutions - it might be that something is flagged and preventing you from reaching those mailboxes.

I'd check various reputation tools - blacklist tools to see if you're flagged somewhere?

1 reply

Omar
Partner - Platinum
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  • 2025 Champion
  • Answer
  • September 24, 2024

I think most of these providers are using similar spam protection solutions - it might be that something is flagged and preventing you from reaching those mailboxes.

I'd check various reputation tools - blacklist tools to see if you're flagged somewhere?