[User]

I talked to customer service and discovered the problem. The Hostgator server itself was blocking bulk email messages, which was why Newsletter plugin was reporting the message as sent without error, but very few people got it.

[User]

Hello Stefano, thank you for the response! I’m aware of the dedicated server distinction, and I had checked to make sure my mailing was in compliance with Hostgator’s rules. BUT I did not think of reaching out to them directly until you mentioned it. I will do that today.

I also installed the wp mail logging plugin.

Will read over your comments carefully, do some troubleshooting, and let you know what the outcome is.

Many thanks!

[Author]

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