On 2020-06-04 12:08 p.m., Matthew Grove via mailop wrote:
Hi,
Just to clarify, Mailchimp does remove addresses from specific lists
when we receive a hard bounce. Atro is correct; we do not suppress hard
bounced addresses globally across all of our users for a number of
reasons. Each user's list is self contained in that respect.
More for my curiosity than anything else.. Let's assume that MailChimp
has a spam outbreak, an ISP or RBL adds the IP address, and the
receiving MTA treats it with a hard bounce (5.XX).
On your 'shared' flows, then all other streams, not only the offending
list, would also get the hard bounce.. do you remove everyone that gets
the 5.xx at that point?
Isn't there some form of 'second effort', eg record the number of 5.xx
received from emails directed to that recipient? To deal with temporary
problems, such as MTA system misconfiguration, resource exhaustion that
might also generate a 5.xx hard bounce?
Then again, if you are looking for global suppression, you can reach out
to our abuse team to see if that can be arranged.
Aside from putting that work load on the recipient, there will always be
some innocents with legitimate notifications that sign up with
MailChimp, you have good sales teams ;) And maybe one of the future ones
will be important.. and if they DID want global suppression, I think it
would be easier for the user/admin to simply block it at their end ;)
But, as a previous poster pointed out, transparency is key..
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