Send mail automatically

Hi, we have a wordpress installation with woocommerce and to send order email we use SMTP configuration. Everything works correctly till a mail server problem on our domain hosting happend. The problem is that we know the problem only when the client didn’t receive the order confirmation email.

So the question is: is there a plugin or a snippet that can send an automatic email to the admin email or a custom email every 30 minutes? So if the admin person cannot see the 5:30 pm mail ( for example) he can call the hosting man to check if there is a SMTP server problem?

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