“Email Is Dead, Long Live Email”: Why Email Isn’t Going Anywhere

Every few years, someone declares email dead. First it was social media, then Slack, then AI. And yet, over 376 billion emails fly across the internet daily, used by 4.6 billion people worldwide. This piece steel-mans the case against email, then takes it apart with the numbers. We’ll also cover the newsletter boom, the Gen Z counter-narrative, and why privacy-first email matters now more than ever.

Is email dead? The eulogy that never sticks

Slack launched in 2013 and promised to “kill email”. Facebook told us social messaging was the future. Microsoft Teams arrived in 2020 and made another bid. Then, in 2024, AI chatbots were supposed to finish the job. Every generation gets its “email killer”. None have delivered.

Here’s the number that matters: an estimated 376 billion emails were sent and received every single day in 2025, according to the Radicati Group via Statista. That figure is on track to surpass 408 billion daily by 2027. The global user base stands at 4.6 billion people, and the Radicati Group projects it will reach 4.8 billion by 2027. No social media platform comes close.

So why does the “email is dead” headline keep resurfacing? Because email isn’t flashy. It doesn’t get product launches or keynote demos. But here’s the thing: chat was built for interruption, email was built for durability. One is a conversation. The other is a record. And that distinction matters more than most people realise.

What are the best arguments against email?

Before defending email, it’s only fair to give the critics their best shot. These are the strongest arguments for why email should have died already.

Inbox overload is real

The average professional receives around 100 to 120 business emails per day, according to workplace communication studies compiled by the cloudHQ Workplace Email Statistics Report (2025). Nearly half of all email traffic is spam. Your inbox often feels less like a communication tool and more like a firehose of noise. That’s a legitimate complaint.

The “infinite workday” problem

A McKinsey Global Institute analysis found that knowledge workers spend up to 28% of their workweek reading, writing, and managing email – more than a full workday every week. Microsoft’s Work Trend Index paints a similarly grim picture: late-night meetings have climbed by 16% year-over-year, and the boundary between work time and personal time keeps eroding. According to PGM Solutions’ compilation of email behaviour data, 79% of people check emails on holiday.

Generational preferences are shifting

Gen Z grew up with instant messaging, TikTok, and group chats. Around 64% of Gen Z say they prefer messaging over email for time-sensitive communication. If the youngest working generation doesn’t love email, that must signal a decline… right?

Not so fast. We’ll return to that claim in a moment, because the data tells a very different story than the headline suggests.

Why is email not dead? 6 structural advantages

Email isn’t surviving by accident. It has deep structural advantages no competing tool has managed to replicate. Here are six reasons why email keeps winning.

1. Email is asynchronous – and that’s the point

Asynchrony isn’t a bug. It’s a feature. In a world of constant Slack pings and Teams notifications, email’s “reply when you’re ready” model respects your time and attention. You control when you engage. That’s a luxury no real-time chat can match.

2. Email is searchable and archivable

A decision you made over email in 2015 is still findable right now. A message from a defunct Slack workspace? Gone forever. Email is the only communication channel where long-term archiving is assumed, not optional. That’s why courts accept it, compliance frameworks require it, and businesses depend on it.

3. Email runs on open, portable protocols

No single company owns SMTP or IMAP. You can (and should) switch from Gmail to Mailfence without losing your contacts, your history, or your audience. Contrast this with walled-garden platforms like Slack or Teams, where your data is tied to a vendor relationship. Email’s open-protocol architecture means you’re never locked in.

4. Email works across every device and organisation

Gmail talks to Outlook. Outlook talks to Mailfence. Mailfence talks to a corporate Exchange server. No shared platform required, no subscription needed. Email is the only universally interoperable communication protocol that crosses every operating system, device, and organisational boundary on the planet.

5. Email is essential for business identity and compliance

Your domain-based email address serves as your professional identity on contracts, invoices, legal notices, and audit trails. Courts acknowledge it. It is required for official communications under GDPR. And here’s the security point that critics consistently overlook: giving up on email isn’t the solution to phishing. It’s being encrypted. Notably, in early 2024, Google and Yahoo started mandating DMARC authentication for bulk email senders, indicating that the ecosystem is actively strengthening its defences rather than tolerating decline.

6. Email powers the invisible web

Think about the emails nobody reads with their eyes: password resets, shipping confirmations, onboarding sequences, two-factor codes, transactional receipts. The modern web runs on automated email. It’s not just a communication channel; it’s the connective tissue of digital infrastructure.

Does Gen Z actually hate email?

This is probably the most misunderstood statistic in the “email is dead” debate. Yes, Gen Z prefers messaging for quick, time-sensitive chats. But for brand communication, the kind that matters for businesses, the picture flips entirely.

According to a Bluecore and NAPCO Research consumer survey (2016, widely cited as an industry benchmark), 60% of Gen Z consider email the most personal channel for receiving brand communication. That’s higher than social media, text, and in-store combined. A separate SendGrid study (cited in Mailjet’s analysis) found that 85% of Gen Z have a strong preference  for email as a communication channel, and the number of users is expected to rise as more Gen Zers enter the workforce.

Edison Mail’s 2022 State of Communications study reinforces this: 80% of Gen Z still use email in their personal lives, and Gen Z, Millennials, and Gen X all rank email as their second most-used personal communication method after text messaging. Less than one per cent of Gen Z never check their inbox, according to 99firms.

And there’s a deeper trend at play. Gen Z is experiencing what researchers call “social media fatigue”. A YouGov survey found 39% of Gen Z Britons say social media has done them more harm than good. Many are actively taking social media detoxes. Where are they turning instead? To curated, permission-based channels, like email newsletters.

The generation supposedly killing email is quietly choosing it over algorithm-driven feeds. That’s not a story of decline. That’s a story of renewal.

What is the email newsletter renaissance?

If email were truly dying, you wouldn’t see entire businesses being built on it. But that’s exactly what’s happening right now, and it’s happening fast.

Substack reported five million paid subscriptions in March 2025 – a 67% increase over the previous year and up from just three million in February 2024. The platform’s valuation hit $1.1 billion after a $100 million funding round in July 2025. Beehiiv, a fast-growing competitor, expanded its newsletter base by over 60% in 2025 to reach 140,000 active publications, with revenue nearly doubling to $28 million. Major publications like TIME, Newsweek, and The New Yorker have launched dedicated newsletter operations: New York magazine, WSJ Opinion, and Paris Review all launched Substacks in 2025.

This isn’t a niche trend. It’s a structural shift in how creators and publishers reach their audiences. Unlike social media, where an algorithm decides who sees your work, email delivers directly to an inbox the reader opted into. You own that relationship. No platform can take it away.

Email marketing generates an average return of $36 to $42 for every dollar spent, according to the Data & Marketing Association and Litmus. The email marketing industry is projected to reach $17.9 billion by 2027 (Statista). That’s not a dying medium. That’s infrastructure undergoing a rapid expansion.

How is AI changing the future of email?

Here’s what the “AI will kill email” crowd gets wrong: AI isn’t replacing email. It’s making email better.

Over 25% of inboxes now actively use AI to summarise, categorise, or prioritise messages, according to cloudHQ’s Email Statistics Report (updated January 2026). Smart reply and drafting tools are used weekly by more than 40% of business users. AI-assisted inbox management has reduced average response time by roughly 18%.

Think about what that means in practice. AI helps you write faster, triage smarter, and focus on messages that actually matter. It sits on top of email as an enhancement layer – it doesn’t replace the channel itself. Just like spell check didn’t kill writing, AI won’t kill email. It’ll make it more efficient.

For email security, AI is equally game-changing. Advanced filtering now catches sophisticated phishing attempts that older rule-based systems missed entirely. The result is a safer, cleaner inbox.

Why does email privacy matter more than ever?

Your inbox probably contains more sensitive data than your filing cabinet ever did – contracts, medical correspondence, bank statements, private conversations. If email is as permanent as the data suggests, what protects all of that?

Most mainstream providers like Gmail and Outlook scan your messages for advertising purposes, store your data indefinitely, and can share information with third parties. That’s the trade-off most people don’t think about when they sign up for a “free” email account.

This is precisely why privacy-first email has become critical. Mailfence’s advanced encryption protects your messages with OpenPGP end-to-end encryption – meaning not even Mailfence itself can read your emails. Based in Belgium, it operates under strict European privacy laws rather than US surveillance frameworks.

And because Mailfence runs on open standards (IMAP, SMTP, OpenPGP), you’re never locked in. You own your data. You control your encryption keys. That combination of privacy, portability, and open protocols is what email security should look like.

Why open protocols beat walled gardens

Here’s a thought experiment. Imagine Slack or Teams shut down tomorrow. What happens to your team’s communication history? It’s gone or trapped in an export format nobody can read easily.

Now imagine your email provider shuts down. You export your mail, point your domain elsewhere, and keep going. Your address still works. Your contacts still reach you. That’s the power of open protocols. No single company can hold your communication hostage.

In an era of platform risk and surveillance capitalism, choosing your email provider is a meaningful act of control. And choosing one like Mailfence – with encryption, open standards, and European data protection – turns that act into real security.

What will replace email?

The short answer: nothing, at least not anytime soon. And here’s why that question itself is flawed.

Email isn’t competing with Slack the way VHS competed with DVD. They serve fundamentally different purposes. Slack and Teams handle real-time team chat well. Social media is great for broadcasting. But email occupies a category of its own: asynchronous, universal, archivable, legally recognised, and open protocol-based.

You can leave Slack. You can quit Instagram. You can’t leave email. It’s the foundation other tools are built on top of. Your Slack account requires an email to sign up. Your social media accounts rely on email for password resets and verification. Email is the root identity layer of the internet.

Key takeaways: is email dead?

• Over 376 billion emails are sent daily, with 4.6 billion users worldwide (projected to reach 4.8 billion by 2027), email is growing, not dying
• Every “email killer”, from Slack to AI, has failed to replace email’s core structural advantages
• 60% of Gen Z consider email the most personal brand communication channel (Bluecore/NAPCO), and 80% still use email in their personal life (Edison Mail)
• The newsletter boom (Substack’s five million paid subs, Beehiiv’s 60% growth) proves email is in a renaissance
• AI enhances email rather than replacing it, making inboxes smarter, faster, and more secure
• Email’s open protocols mean no vendor lock-in, unlike every chat platform and social network
• Privacy-first providers like Mailfence give you end-to-end encryption without sacrificing usability

Final thoughts on the future of email

Email doesn’t need to be exciting or fashionable. It needs to be load-bearing. For years, email has carried the weight of global communication, survived every challenger, and quietly grown larger with each passing year. The data is unambiguous.

But longevity without security is a liability. If your inbox carries your most important records and business relationships, the question isn’t whether to protect it, it’s how. Mailfence offers industry-leading encrypted email alongside a full Productivity Suite (calendar, documents, contacts, and groups), all built around the idea that privacy is a right, not a feature.

Chat is for the moment. Email is for the long run. Choose wisely where you run it. If you want to hear more privacy-related content, give our monthly newsletter a follow!