Definitions for "Electronic Submission"
A submission of an article or book proposal, manuscript or similar work sent to the editor electronically (usually by e-mail or on computer disk).
The submission of a manuscript or other document in electronic form, rather than on paper. This may be accomplished by means of e-mail or through the use of a portable storage medium, such as CD-ROM or diskette, etc. See also CD-ROM ELECTRONIC DOCUMENT MANUSCRIPT
Submission made via modem or on computer disk.  Very few editors accept electronic submissions of unsolicited manuscripts.