Hi {{first_name}},
I reached out last week about a potential partnership between [[your brand]] and your [[content type or channel]]. Wanted to add one thing: we're also open to [[alternative format, e.g., "a story mention instead of a full video" or "an honest review rather than a scripted integration"]].
Happy to send samples first if you'd prefer to try the product before committing to anything.
[[Your name]]