I'm currently investigating a situation where apparently emails I have sent from my gmail account have been also forwarded to another gmail account, without my being aware of it.
Is this plausible or feasible - that an email can be auto-forwarded, but not appear in "Sent Mail" and for the auto-forward rule to be hidden somehow?
What measures could I take to:
- Establish whether this may have occurred?
- Prevent it from re-occurring?