Hello,
we recently decided to move from our old ESP to Klaviyo and unfortunately I’m experiencing some issues on the deliverability for our 2 German accounts.
In particular we get are getting bounce rate between 4 and 8% due to the large amount of @t-online.de address we have in our lists which are all bounced.
Is there some solution/best practice to avoid this problem and set those t-online.de email as “safe”?
Thanks in advance for the help
Aline