In a recent correspondence, I was asked about Bounced(ing) emails. If you are not receiving emails from groups.io you may be bouncing or you may have received an email from gio to reconfirm.
Not that group owners and moderators can do nothing to help. Below is copied from the groups.io help pages:

https://groups.io/helpcenter/membersmanual/1/understanding-groups-io-accounts/handling-a-bouncing-account

Handling a bouncing account

When you are receiving group messages by email but group messages cannot be delivered to you for some reason, the nondelivery events are called bounces. Such events put your Groups.io account into a bouncing state that affects all the groups you belong to with that account’s email address.

Groups.io tries to notify a bouncing member by sending an email message that has the subject line “Your Groups.io Account is Bouncing.” Also, when a bouncing member logs in to the Groups.io website, a red banner at the top of the page informs them that their account is bouncing.

Note: Even if your Groups.io account is bouncing, you can still log in to group websites and read and post messages there. Bouncing affects only email delivery; it does not affect your ability to use group websites.

If you have not received an email notification that your account is bouncing but you realize that you have not received any group email messages for a while, you can check your account to see whether group messages are bouncing. For instructions, go to "Setting account preferences and viewing account information" and scroll down to Checking recent email bounces.

When your Groups.io account is bouncing, you can try to “unbounce” your account using either of these methods:

If you received a “Your Groups.io Account is Bouncing” email notification, click the link in the email to unbounce your account.
Go to the Groups.io website (and log in if necessary). In the red banner at the top of the page, click the link to unbounce your account.

! Important: Group owners and moderators cannot do anything to unbounce accounts of their group members. When your account is bouncing, you must address the underlying problem yourself, which might involve contacting your email service provider for assistance or investigation.



--
Peter Ulvestad

JMRI Users Group Moderator ( https://www.jmri.org )
Tam Valley Group Moderator ( https://tamvalleydepot.com/ )
Sprog-DCC Group Moderator ( http://www.sprog-dcc.co.uk/ )
Edmonton Model Railroad Association ( http://www.emra.club/ )