No I didn't. There's nothing stopping someone from finding my email address and sticking it in their contact list. How do you think spammers get email addresses in the first place? People give them their email addresses?
I saw the email from a contact, clicked through and saw that your app only asks for "view contacts" so I though I'd be able to choose to whom I'd send an email or at least have some kind of confirmation before all of a sudden "BAM" you send thousands of emails to everyone I've emailed in the past 5 years.
That's really bad. You have to improve the UX/UI so that there's a bit of granularity and more transparency otherwise, you're going to lose your Google API access... or simply disappear as everyone marks your emails as spam.