I'm a WP dev, that continues to have my client's email forms suddenly stop working (email not delivered). Yes, I add DMARC records, SMTP plugins, etc. Does anyone know of a free, automated tool that tests form submissions for successful delivery, or at least automatically submits them, so I can check to see if they were delivered? It also needs to be able to answer quiz questions for spam blocking. I'm hoping to run a once per week automated submission on all my client's sites.