Bounce rates - mailbox unavailable
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!

