Email marketing to e-commerce could most likely be the most persuasive way out there of talking to and developing product sales into brand-loyal clients. Details on how, since an e-commerce business is already in place, one can actually optimize e-mail marketing further into the business, will now follow in the next section:

1. Building a Quality Email List: 
First, create a highly targeted email list by capturing emails through sign-up forms on your website, at checkout, just by attending an event, or through running a promotion. Be sure to be in compliance with GDPR and CAN-SPAM, gaining explicit permission and making it very, very easy to opt-out.
This way, one will get a chance to personalize and have relevant messaging. This can be done by segments of customers based on factors such as purchase history, browsing behavior, location, or at which stage of the customer lifecycle they are at. For example, do tell loyal customers about new products or send special offers to recent visitors.

2. Craft Compelling Content:
Keep the offering fun and relevant to your target market. Maybe you are bombarding them with product updates, promotional offers, or educational content, or it could be something complex like an exclusive offer. Let them be appealing pictures. Write persuasive content to create very high engagement rates. The email should be mobile-friendly, as many of the users log into their email via phones .

3. Automated Campaigns : 
This can save much of your time by increasing efficiency. The key aim here is to be smarter in the way you communicate with your audience, for which you can set up various automated email sequences, such as the welcome series for new subscribers, the series of abandoned cart reminders for those who add to the cart but bounce, the post-purchase follow-ups set after purchase aimed at repeat business, and feedback capturing.

4. Personalize Your Emails:
Personalization makes the emails relevant to customers. Address the customers by their names and follow this up with sending product recommendations personalized based on browsing or purchase history. The practice of personalized emailing results in increased open and click-through rates.

5. Apply Promotional Techniques
: Send flash, seasonal, or other modes of promotions/sales/discount offers; again, use email marketing. Show the offer time-bound to the customer as a technique to develop urgency for sale.

6. Analyze and Optimize
Continue tracking performance on each and every email campaign to be run, in terms of open rate, click-through rates, conversion rates, or even unsubscribe rates. So with data-backed testing over the changes those mail elements—be it the subject line, CTAs, or design—bring, it's time to adjust your strategy.

7. Be Consistent:
Having a steady email schedule continues to keep them engaged whether through weekly newsletters or monthly updates. This kind of consistency generates expectations and continues to keep your brand top of mind.

8. Encourage Customer Feedback:
Email campaigns can be the most effective way to get feedback/outcomes from customers. With this, you may gather a few insights regarding your customers, which will point you in a direction for building future email strategies.

9. Compliance and Best Practices:
Comply with the euphemistic best email practices, which include the ability to easily unsubscribe, respect customers' privacy and relevance, and respect their decisions.

Businesses in e-commerce with strategies in place aim to use email marketing to develop good relationships with customers by driving sales and building a customer base loyal to the business.