email group not receiving my emails

Hi sgv09,

While this entire article covers helpful information on what to do if iCloud Mail is not working properly, of particular note is the section below:

• If iCloud Mail isn't working - Apple Support

"If your recipient doesn't receive your message

1. If an “unknown address” or “undelivered mail returned” message appears in your Inbox after you send a message, go to your Sent mailbox and make sure that the recipient's email address is correct.
2. If you use macOS Mail or access your iCloud Mail using Safari or another supported web browser, check your Drafts, Sent, and Outbox mailboxes:

• If you see an unsent copy of the message in Drafts, try to send it again.
• If you see the message in your Outbox, make sure that you're connected to the Internet and use the steps above to select iCloud as the outgoing mail account.

3.Ask the recipient to check their Junk mail folders or mailboxes. 

4.If your recipient still doesn't receive your message, but your message was sent without any alerts or “undelivered mail” messages, your message might be blocked or filtered by the iCloud Mail servers or the recipient's mail server. To find out, contact iCloud Support. You should also ask your recipient to contact their email administrator."

If you notice this issue persists even after those steps, contact Apple Support to take a closer look.

• Get Support

Take care.