You can't evade a subpoena. A recipient could contest it, though. >"I haven't been judged guilty yet, so the courts have no right to gather evidence" You can

You can't evade a subpoena. A recipient could contest it, though. >"I haven't been judged guilty yet, so the courts have no right to gather evidence" You can only know that the requested information is evidence of something when you actually receive it. That is a very high bar. However, anything can be subpoenaed as long as it has some vague notion of relevance. Under that less-stricter criteria, a general "electronic communication" subpoena sent to Google includes a much larger set of data, most of which, is useless, but might contain embarrassing information that could be leaked to the media to smear someone.