Before spam filters, unsubscribe links and entire industries devoted to unwanted email, somebody at DEC typed hundreds of ARPANET addresses into a message by hand and discovered that people already hated this idea.
Visit Brad Templeton’s archive of the 1978 DEC spam
Brad Templeton’s page preserves the May 1978 Digital Equipment Corporation mass mailing that is often described as one of the earliest examples of network spam and sometimes as the first.
The sender was Gary Thuerk, a DEC marketer promoting demonstrations of the new DECSYSTEM-20 and its built-in ARPANET support to users on the West Coast.
The infrastructure was primitive enough that even the mistake is interesting.
According to the account preserved by Templeton, the SNDMSG mail program had limited room for addressing fields. Hundreds of addresses were typed manually from a printed ARPANET directory. Addresses overflowed from one header field into another and eventually into the message body. The program would accept only 320 destinations, so additional recipients were handled separately.
Bulk email had arrived before anybody had bothered to make bulk email convenient.
The replies are more valuable than the famous message
Templeton did not merely save a copy of the DEC advertisement.
His page also preserves reaction from ARPANET users and later context from people involved in the event. That turns a famous anecdote into something much more useful: a small primary-source archive showing how network users understood unsolicited mass messaging while the norms were still being negotiated.
Some recipients were angry about the misuse of the network. The Defense Communications Agency, which operated the ARPANET, complained to Thuerk’s management. One user believed the mailing had caused trouble for his system. Others apparently thought the DEC announcement was at least more relevant than the small personal mass mailings that had occurred before it.
Thuerk later told Templeton that he considered the new DEC system genuinely relevant to the ARPANET community and did not believe he was simply flooding strangers with junk. He also knew there might be complaints, just not how strong the reaction would be.
That argument should sound familiar to anyone who has ever received a message beginning with “I thought this might be relevant to you.”
The technology changed. The justification did not need much work.
The page also preserves the weird physical constraints of the network era: printed address directories, manually entered recipient lists, 56 kbps links and mail software whose field limits could visibly spill addresses into the message itself.
Those details are exactly what disappear when Internet history gets reduced to a timeline bullet reading “first spam sent in 1978.”
CacheRat’s 1,967 Ancient Web Domains research list is useful because pages like Templeton’s still contain the messy evidence behind the clean historical fact: original messages, contemporary reactions and the recollections of people who were actually there.
Spam did not begin with a sophisticated advertising platform.
It began with somebody discovering that a network had a lot of addresses on it.