Hi all!
I wanted to know by default does Marketo have any retry mechanism for the soft bounced as well as the hard bounced emails. I am aware that we can have a bounce management program created but wanted to be aware if Marketo has some default retry mechanism in place?
Like Darshil says, for temporary errors there's a backoff algorithm. It looks like this (this is from actual Marketo sends):
However, this does not apply to immediate bounces. A hard error due to a nonexistent user (at a domain that can otherwise receive email) will not retry, by definition.
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