[Python] KeyError: 'email' when sending email with SendGrid Python Library v6.12.3 [closed]

I am consistently encountering a KeyError: 'email' when trying to send a verification email using the SendGrid Python library. The error occurs during the sg.send(mail) call.

I tried ensuring SENDGRID_API_KEY and SENDGRID_FROM_EMAIL environment variables are set correctly. Trying different ways of providing the recipient email to the Mail constructor (Email(to_email), [Email(to_email)], [to_email], [To(to_email)]). Mention that the KeyError persisted regardless of these attempts.

Continue reading...