Klaviyo - Klaviyo helps brands own the customer experience, grow higher-value relationships, and deliver more personalized marketing experiences across email, mobile, and web.
RSS.app - Monitor the web the way YOU want to.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
FiveFilters Feed Creator - Create feed from elements (e.g. links) extracted from a given web page
TargetBay - TargetBay is a complete eCommerce revenue generation platform.
FetchRSS - Generate RSS out of any website.