Support adding Campaign tag

[sujitph]

Hi there,

Can you guys please add the feature wherein we can add a specific Campaign name for all outgoing emails, something similar to how we can assign template_id.

Thanks, Sujit

[rajumsys]

@netsujit thanks for your suggestion. we'll surely consider it.

however, as an intermediary solution, you should be able to use a hook (like wpsp_response_body) to set a campaign.