Is it possible to add a category tag to mail being send via the Sendgrid API?
What I'd like to know is open and click rates for specific types of transactional e-mails. It appears you can add a category using the STMP API but I can't find any documentation on how to do that using API v3 (just a GET endpoint).
Am I even thinking about this right? Is SendGrid the right place to track opens and clicks or should I use the webhooks and track this stuff myself?
It looks like SendGrid accepts categories. Check out their other API documentation page.
There's also a send example of categories in their python client.