We've written notes, texts, emails. We've mourned the slow demise of the handwritten letter--the long epistle by post, a treasure indeed.
For today's Thursday prompt, you are to write an epistolary poem, meaning a poem as a letter. It can certainly be fictional; write it as a persona poem, write it to yourself, write it to a lost lover, write it to an object. But make sure this poem is a direct address--one in which you are composing to someone or something else.
More on epistolary prompts here.
Some examples here.