Email "to" in Contact Form 7 - WordPress

The customer is not receiving emails from one of the Contact Form 7 forms on our web site.

I'm getting the feeling that it may be the way I formatted the "to" field in the "Mail" section (attached).

Note the two email addresses separated by a comma. The 2nd email address always gets these, the first (the claim) does not.

Do I have to use a different separator (;)? Or use "Additional Headers" to format a CC?

Richard KortsBusiness Owner / Chief DeveloperAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

They've revamped this plugin a bit. You need to now to use the additional headers section for that which they do finally have a doc page for:
Richard KortsBusiness Owner / Chief DeveloperAuthor Commented:

I removed the 2nd email (after the comma), it still does not go through.

Are you sure that first one isn't just spam blocked? Have you tried sending just regular emails and they go through - like from outlook?
If those go through, maybe that email is being blocked by the hosting server.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Richard KortsBusiness Owner / Chief DeveloperAuthor Commented:

It was something on the host server; they fixed it, works now.

I was looking in the wrong place. Nothing to do with WordPress or Contact Form 7.

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.