info: 5 months, 0 week ago
The emails probably are not being sent from your email account.
Maybe the emails that the persons on your contact list are receiving, were sent from some other email account, but the sender spoofed his/her email address.
Email spoofing allows someone to change the "From" address of an email message, to make it appears as if it came from someone else.
Here is an example:
I can send an email message to you, and change the "From" address to "firstname.lastname@example.org". So, when you receive the email message it will appear as if it came from the Whitehouse, instead of me.
But, if they are still sceptical, please change your email address password.