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We migrated successfully.

We did not have groups.io notify our Yahoo members of the new group.

We used MailChimp to notify our users.

A lot of that e-mail bounced as undeliverable. I don't recall any data in our Yahoo group flagging members' email addresses as undeliverable.

MailChimp put us on "warning" that because of all the bad email addresses, it appears that we were violating their TOS by sending email to recipients who did not opt-in.

Groups.io initial "Here's a new group" email to migrated subscribers must have the same problem with dead e-mail addresses.

How do they handle this??

On Sat, Nov 9, 2019 at 11:47 AM, Tom Field wrote:

Groups.io initial "Here's a new group" email to migrated subscribers must have the same problem with dead e-mail addresses.

How do they handle this?

GIO has their own email server and bounce handling, so not a problem like trying to use an outside service.? The Yahoo bouncing status hasn't worked right in several years, so it's not unusual to "lose" a bunch of members right after a transfer.

Duane
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On Sat, Nov 9, 2019 at 12:47 PM, Tom Field wrote:

We migrated successfully.

Tom -- Congratulations!

We did not have groups.io notify our Yahoo members of the new group.

We used MailChimp to notify our users.

A lot of that e-mail bounced as undeliverable. I don't recall any data in our Yahoo group flagging members' email addresses as undeliverable.

This is very common. See?/g/GroupManagersForum/wiki/Transfer-from-Yahoo-Groups#Y21group-after-the-transfer

MailChimp put us on "warning" that because of all the bad email addresses, it appears that we were violating their TOS by sending email to recipients who did not opt-in.

There is an opt-out link in the transfer completion notification (the one that you chose not to send).

Groups.io initial "Here's a new group" email to migrated subscribers must have the same problem with dead e-mail addresses.

How do they handle this??

GMF wiki entry:?/g/GroupManagersForum/wiki/dealing-with-bouncing
Detailed information in the system help:?/static/help#bouncing

Regards,
Bruce

On 09 Nov 2019 18:43, Tom Field wrote:

A lot of that e-mail bounced as undeliverable. I don't recall any data in our Yahoo group flagging members' email addresses as undeliverable.

My experience with this has been similar to what has been said elsewhere in this thread: many e-mail addresses that Yahoogroups did not flag as undeliverable turned out to be undeliverable. In my case, I had a small enough list of members that I was able to use my own ISP to send them all an e-mail beforehand, and many of the onces that Yahoogroups did not flag as undeliverable, bounced (many some bounced hard).

Samuel