Getting delivery back.
WHAT DAMAGES REPUTATION
Spam sent after a compromise A large send to an old list A spike in complaints Blacklisting
WHAT TO DO FIRST
Fix the cause.
Nothing else works while it continues.
THEN
Request delisting where you are listed Verify authentication is correct Reduce sending volume substantially Send only to your most engaged recipients
WHY REDUCE VOLUME
Rebuilding reputation requires positive signals.
Sending to engaged recipients who open and reply produces those.
HOW LONG IT TAKES
Weeks, typically.
There is no fast route.
WHAT NOT TO DO
Continue sending at volume while delivery is poor Change domains to escape the problem
THAT SECOND ONE
A new domain has no reputation and is treated cautiously anyway.
And the underlying problem follows you.
WHAT TO MONITOR
Delivery rates as you rebuild.
WHAT TO PREVENT RECURRENCE
Whatever caused it.
