Apparently, a third party knew the contents of an email I sent to someone within an hour after I sent it. The following possibilities come into mind:
- The recipient forwarded the email to the third party. (I doubt this though as the email was sent to a business address on a non-business day.)
- The third party has access to the recipient's account.
- The third party has access to my email account.
Are there other possibilities I have failed to consider? How would I check those possibilities?
I was only able to check the possibility that the third party has access to my email account. Unfortunately the incident happened some time ago, and it seems to me there's no way to get your logged in IP addresses from Gmail after some time. So my only recourse is to change my current password to something stronger.
Thanks in advance.