Currently if I create two messages right after one another and send them both, the same instance of headers is used per object instead of having unique headers.
This is due to how where you declared the sendgrid_headers. It's at the class level instead of in init.
Currently if I create two messages right after one another and send them both, the same instance of headers is used per object instead of having unique headers.
This is due to how where you declared the sendgrid_headers. It's at the class level instead of in init.