Need an omnichannel tool setup for my E-Commerce website for retention marketing !

I'm looking for an experienced professional to help me set up an omnichannel tool for my existing e-commerce business. This must be an advanced setup with the ability to collect email addresses from customers. This tool should help me optimize my website to better target and engage with my customers, improving the customer retention rate and lifetime value of my business. The goal here is to create a more personalized experience with customers, and ensure they return to complete their purchases. My biggest priority here is to find someone who has a keen understanding of customer acquisition and retention strategies, as well as the knowledge of how to set up and integrate an omnichannel solution.