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!