Email has more than 50 years of history and remains the backbone of business communication worldwide. It was born as an academic experiment and became the most widely used productivity tool by companies of all sizes.
In this article we trace its journey: from the first message sent over a university network to the professional mailboxes with custom domains that small businesses use today.
The Origins: ARPANET and the First Email (1971)
The history of email begins in 1971, when engineer Ray Tomlinson sent the first message between two computers connected to ARPANET, the precursor network to the internet developed by the U.S. Department of Defense.
Tomlinson also made a decision that would change communication forever: he chose the @ symbol to separate the user name from the machine name. That convention, adopted so naturally it seems obvious today, is still the foundation of every email address in the world.
The content of that first message was mundane — a keyboard test, something like "QWERTYUIOP" — but the impact was monumental.
From Universities to Corporations: The 1980s and 90s
Throughout the 1980s, email was the exclusive territory of universities, government agencies, and large corporations with access to private networks. The technology existed, but mass access did not.
The shift came in the 1990s, driven by three simultaneous factors:
- The commercial opening of the internet (1991–1995) put the network in the hands of the general public.
- The first free email providers — Hotmail (1996), Yahoo Mail (1997) — democratized email. Anyone could have an address in minutes.
- Desktop clients like Microsoft Outlook and Lotus Notes brought email to office computers and established it as a standard corporate tool.
By the late 1990s, email had replaced the fax as the primary channel of formal business communication in most industries.
The Age of Maturity: 2000–2010
With the new millennium came email's greatest challenge: spam. By 2003, it was estimated that more than 50% of global email traffic was unsolicited. This accelerated the development of spam filters, authentication protocols, and sending best practices that are standard today.
Two innovations also emerged that redefined business email:
- Gmail (2004): Google launched its service with 1 GB of storage — an astronomical amount at the time. Its clean interface and powerful search changed user expectations.
- BlackBerry and mobile email: before the iPhone, the BlackBerry put email in the pocket of executives and professionals. The idea of checking email anywhere, anytime became normalized in the business world.
Modern Business Email: Custom Domains, Security, and the Cloud (2010–Today)
The past decade has cemented email as critical infrastructure for any business. The most significant developments include:
Email with a Custom Domain
Businesses stopped accepting salespeople who used Gmail or Hotmail accounts. Email with a custom domain ([email protected]) became a basic expectation of professionalism. More and more small businesses understand that a generic email address signals a lack of seriousness to clients and suppliers.
If your business hasn't made that move yet, the business email section has complete guides to help you set it up.
Authentication and Security: SPF, DKIM, and DMARC
To combat phishing and identity spoofing, the industry developed three authentication protocols that are now indispensable:
- SPF (Sender Policy Framework): declares which servers are authorized to send email on behalf of your domain.
- DKIM (DomainKeys Identified Mail): digitally signs each message to verify it was not altered in transit.
- DMARC: ties together SPF and DKIM and instructs the receiving server what to do with messages that fail verification.
The Migration to the Cloud
Platforms like Google Workspace and Microsoft 365 moved email servers from corporate data centers to the cloud. Businesses no longer needed their own infrastructure to manage mailboxes, which reduced costs and complexity — especially for small and medium-sized businesses.
Email and Mobility
With the rise of smartphones, most email is now read on mobile devices. IMAP protocols and real-time synchronization allow the same mailbox to be accessed from multiple devices without losing messages or history.
Email Today: Is It Still Relevant?
Despite the rise of Slack, Teams, WhatsApp, and other messaging platforms, email remains the most widely used business communication channel in the world. According to Statista data, more than 360 billion emails were sent per day in 2024.
The reason is simple: email is universal, formal, auditable, and doesn't require both parties to use the same application. No messaging platform has managed to replicate all four of those qualities at once.
For any business that wants to project credibility and grow, professional email is just as fundamental today as it was 20 years ago. The difference is that it's now easier and cheaper than ever to set up. At elenlace.com we guide you through the entire process, from choosing the right plan to full technical configuration.
Key Takeaways
- Email was born in 1971 with Ray Tomlinson's first message on ARPANET, along with the introduction of the @ symbol.
- It went mainstream in the 1990s with the commercial opening of the internet and early free services like Hotmail and Yahoo Mail.
- The 2000s brought Gmail, mobile email, and the fight against spam.
- Today, business email rests on custom domains, authentication protocols (SPF/DKIM/DMARC), and cloud platforms.
- Email remains the world's most important corporate communication channel, with over 360 billion messages sent daily.
Does your business still lack a custom domain email? Now is the time to make the move. Visit elenlace.com and set up your professional email today.
FAQ
Who invented email?
Ray Tomlinson, an engineer at BBN Technologies, is credited as the inventor of modern email. In 1971 he sent the first message between two ARPANET computers and established the use of the @ symbol to separate user from machine.
When did businesses start using email on a large scale?
Mass adoption in the business world happened during the second half of the 1990s, driven by the commercial opening of the internet, desktop clients like Outlook, and the arrival of free email services that popularized email among the general public.
Why is a custom domain email important for businesses?
A custom domain email ([email protected]) projects professionalism, reinforces brand identity, and builds greater trust with clients and suppliers. It also provides full control over mailboxes, security policies, and communication history.
What are the most important security protocols in modern business email?
The three essential protocols are SPF, DKIM, and DMARC. Together they authenticate the origin of messages, prevent identity spoofing (phishing), and improve email deliverability to recipients' inboxes.
Compare providers
Other providers and guides worth comparing:
