Somebody says they never got it. Work down these, in order.
Spam, then the address
Ask them to look in spam or junk. Most missing emails are there.
Marking it as not spam makes the next one land properly.
Open their name on your members and read the address back.
A typo is the second most common answer, and an old work address the third.
It bounced, or we stopped sending
Your members shows a chip for each reason. Open their name and their record says what to do.
Every welcome email ends with Not a member of this club? Tell us. They pressed it.
They unsubscribed, marked an email as spam, or took their own address off.
When the club is the problem
Your club's sending is paused at our end. Tell us the club. It is ours to fix.
Wait for it to finish.
Too many addresses bounced, or too many people refused it or marked it as spam. Home says which, and what to do before you send again.
What the league sends lists every email the product sends, and who gets each one.