Emails being bounced that are demonstrably valid
I am increasingly concerned about why emails sent to our mailing list are being bounced.
I have cleaned the list with Kickbox, and still get bounces. No I am getting bounces when sending an email to my other identity which is as the Hubspot administrator.
There seems no consistency about these bounces.
Could anyone point me in the direction of a solution - it is a real worry.
All the best,