Create/manipulate threading in emails
| Function | Description | Links |
|---|---|---|
| clean_references() | Update email references for a broken Thread | |
| find_virtual() | Find an email with a Virtual message number | |
| insert_message() | Insert a message into a thread | |
| is_descendant() | Is one thread a descendant of another | |
| mutt_break_thread() | Break the email Thread | |
| thread_hash_destructor() | Hash Destructor callback | hash_hdata_free_t, hash_hdata_free_api |
| unlink_message() | Break the message out of the thread |
