In the documentation page How to setup email tracking, it says, "HubSpot will automatically add the following source tags to any link within your email to ensure any traffic generated from a link within your email has the correct traffic source attribution:
utm_content=[email ID number]
For transactional emails sent through the SMTP API, I’m seeing that utm_medium and utm_source appear in the enhanced links, but not utm_campaign. (I’m not concerned with utm_content.) The SMTP tokens are set up with a campaign name though, so this information should be available to Hubspot. I’m not sure what’s going wrong. Did I miss something in configuration?