What platform does clarity use for autogenerated emails? Should we be building that content and have that setup within our app programming?

Treyedit.com is simple and easy

My first question is, how did you get these email addresses? If they physically entered them, simply store them in an encrypted spreadsheet or database for importing into a platform. Of course, the best method is utilizing an email service to initially collect those addresses.

You need to think about these auto-responders in terms of events. If you can put data up on MailChimp when an event takes place, you can manage auto-responders off of that data. Here is some additional information from their website. http://kb.mailchimp.com/article/how-do-i-create-an-autoresponder

I use an awesome young internet marketer. I would be happy to connect you with him. He has had access to all of my personal info for over 4 years and I trust him completely. Any reputable person on Odesk, or in the real world should be able to provide multiple strong references.

Do you have an idea of what kind of invalid emails you are receiving? That will help you determine which vendor is the best fit for you. For example do you consider support@, info@, or postmaster@ invalid, some vendors will weed those out for you? Or are you just concerned with making sure the email has an accurate Domain/MX Record? Will blocking SPAM IP addresses be enough to address your needs, if so you need a vendor who checks agains URI DNSBLs. With that in mind, here's a good blog article about the top vendors. Best wishes! https://www.formget.com/best-email-verification-services/