Set up email marketing help with server

We need an expert in Email marketing and can spam rules so we can set a system for my website that will need to send notifications to users about different things. Not sales just transactional emails mostly and reminders from the site. We don't want to have any problems so we need to make sure we have everything working smoothly. We need recommendation about what server to use and you need to help us through this process to make it right. Ongoing maintenance maybe necessary after the project is done. Thanks, Paula