Write a Content Collaboration or Co-Marketing Pitch

Act as a content collaboration and co-marketing outreach specialist. I want to pitch a content collaboration to [POTENTIAL_COLLABORATOR_TYPE] in my industry. My platform is [MY_PLATFORM] with [MY_AUDIENCE_SIZE] audience and my content expertise is [MY_EXPERTISE]. The collaboration I am proposing is [COLLABORATION_IDEA] (e.g. joint webinar, newsletter swap, podcast cross-promotion, co-authored post). Write a collaboration pitch covering: an email subject line with a clear hook, an opening that leads with what is in it for them, the collaboration proposal in specific and low-friction terms, the mutual audience benefit, and a simple next step. Also write a LinkedIn DM version under 200 characters.