You can preview the message at any time by clicking on the Spellcheck/Preview button on the editor. We also give you sufficient time to edit your post after submitting it.
Should you want a post deleted, you're welcome to report it with the Flag Bad Post button. This will place it in the queue for moderation and a moderator can delete it. However, keep in mind that if there are any replies to one of your threads that you want deleted or deleting one of your posts might break thread continuity, we won't do it.
Reporting a post after the edit window is also acceptable if you want reasonable changes made.