There's nothing definitive out there, so have to ask - is it possible to run Nodemailer on React only with no backend?

I'm hoping to avoid a backend since I'm doing everything else in the client, would be supurb if I can also handle a contact form in client only.

For context, I want to avoid libraries/services that may be able to see any posted form data. I've come across email.js, though it's tied to an account/email client that stored all emails.

Thanks in advance!