If you are a startup and want to launch a product or a service, you can not effort to let your IT focus on something else than product development.
The last couple of years I unfortunately experienced that IT in startups tend to shift the focus over time from product development to internal operations support. Not because the product is ready and nothing to improve anymore, rather because the need of other departments for technical support and help on their essential tasks and processes grown. And the "IT guys" need to help out there to get it running.
In this presentation I suggest to outsource every process functionality which is not affecting the core product of a startup to an SaaS service provider out there.
Use an expert service provider for sending mail campaigns. Use an drag and drop landingpage creation tool including A/B testing ability for your landingpages. Use a dashboard service for reports and live stats. Use a customer care ticketing and instant faq tool for taking care of customer questions.
My main point is: Don't do it internally and don't do it yourself. Pay overall 200 bucks a month and nobody gets hurt. So you can focus on your mission and not on stupid support tasks.