: Pre-designed HTML/CSS or platform-specific (like WordPress) code for pop-ups, header bars, and exit-intent forms.
If you are building your list from scratch, these specific technical features are often part of the "upgrade" or "pro" versions of list-building tools: How To Build An Email List From Scratch
: Pre-written "welcome series" email copy you can copy and paste into your Email Service Provider (ESP). Strategic Features Included in Most Guides
: Ready-to-use ZIP files containing editable PDFs, checklists, or e-books that you offer for free in exchange for an email address.