The question is where is the line drawn between contacting a person and a third party or script of some sort contacting the same person ostensibly on their behalf.
For another example a person working in telemarketing is usually given a list of numbers to call which are automatically dialed by the phone system so therefor has no direct control over who they "contact".
The usual standard for a court would be the intent of the alleged perpetrator (IANAL etc).
I would think it would be either "intentionally" or "knowingly." In other words if you sent the email intending to contact the other person that's pretty clearly there. I would suspect at least some states would draw the line at "knew or should have known" when you hit send.
But "couldn't reasonably have known" is different. If Google is, for example, looking at your past email contacts and sending invites out on your behalf then that is so far beyond "knew or should have known" that I can't imagine it applying.
For another example a person working in telemarketing is usually given a list of numbers to call which are automatically dialed by the phone system so therefor has no direct control over who they "contact".
The usual standard for a court would be the intent of the alleged perpetrator (IANAL etc).