You can move an email discussion directly to your Drafts in Threads by forwarding the email to forward@email.threads.com.
Before you post the thread, you'll be able to edit it, add people to it, or move it to a forum.

You can move an email discussion directly to your Drafts in Threads by forwarding the email to forward@email.threads.com.
Before you post the thread, you'll be able to edit it, add people to it, or move it to a forum.