- Dialcom
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Dialcom Inc. was a US corporation which developed the world's first commercial electronic mail service. It was founded in 1970 by Robert F. Ryan and was sold to ITT Corporation in 1982, becoming ITT Dialcom. Dialcom's e-mail software ran on Prime minicomputers and was licensed to governmental telecommunications providers in over seventeen countries. Various extra features could be offered by Dialcom-based services, including gateways to telex and fax, and online information retrieval services. In 1986, British Telecom, who used Dialcom software for its Telecom Gold service, bought Dialcom from ITT.
Dialcom systems
Each Dialcom system was allocated a two-digit identification number. This was used as a prefix for the Dialcom e-mail addresses (or "mailboxes"), thus allowing e-mail to be exchanged between difference Dialcom services. By 1990, the following Dialcom systems were operating:
Country Service Systems 
AustraliaMinerva/Keylink 07, 08, 09 
CanadaInfotex 20-24 
DenmarkDataboks 71 
FinlandTelebox 62 
GermanyTelebox 15, 16 
Hong KongDialcom 88, 89 
IrelandEirmail 74 
IsraelGoldnet 05, 06 
ItalyMastermail 65-68 
JapanKDMINC 13, 14 
South KoreaDialcom 52 
MaltaTelecom Gold 75 
MexicoTelepro 52 
NetherlandsMemocom 27-29, 55 
New ZealandStarnet 01, 02 
Puerto RicoDialcom 25 
SingaporeTelebox 10-12 
TaiwanDialcom 52 
United KingdomTelecom Gold 01, 04, 17, 80-89 
United StatesDialcom 29-34, 37, 38, 41-59, 61-63, 90-99 References
- ZoomInfo: Robert F. Ryan
- BT Connected Earth history of e-mail
- Cornwall, Hugo (1988). The Hacker's Handbook III, revised edition, Century Hutchinson. ISBN 0-7126-1147-9
- Clark, Tim (1990). Hints for Getting Mail through Various Gateways to and from JANET, issue 7, University of Warwick.
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