Every year, like clockwork, a new marketing guru announces the death of email marketing. They point to the explosive growth of TikTok, the rise of conversational AI search engines, or the absolute saturation of consumer inboxes as evidence that the humble email has run its course. Yet, as of 2026, the data tells a completely different story. Whether an established e-commerce brand is optimising its flows or a startup is trying to acquire customers from a cold start, mastering this channel requires a shift in strategy.