Building an email list involves strategies such as offering incentives like discounts or exclusive content, creating engaging opt-in forms on your website, and leveraging social media to promote your email sign-up.

The optimal time to send emails can vary depending on your audience and industry. Generally, testing different send times and analyzing open rates can help you determine the best timing for your campaigns.

To improve open rates, focus on crafting compelling subject lines, segmenting your email list to send targeted content, and ensuring your emails are mobile-friendly and relevant to your subscribers’ interests.

Single opt-in allows users to subscribe to your email list with just one action, while double opt-in requires users to confirm their subscription via email. Double opt-in is considered a best practice for ensuring list quality and compliance.

To avoid spam filters, use a recognizable sender name and email address, avoid spam trigger words in your subject lines and content, and regularly clean your email list to remove inactive or invalid addresses.

A/B testing, also known as split testing, allows you to compare different elements of your emails (such as subject lines, CTAs, or design) to determine which performs better. This data-driven approach helps optimize your campaigns for maximum effectiveness.

Personalization can involve using subscribers’ names in the subject line or body of the email, segmenting your list based on demographics or behavior, and dynamically inserting content based on user preferences or past interactions.