| Function | Description | Links |
| check_attachments() | Check if any attachments have changed or been deleted | |
| check_cid() | Check if a Content-ID is valid | |
| check_count() | Check if there are any attachments | |
| compose_attach_swap() | Swap two adjacent entries in the attachment list | |
| compose_function_dispatcher() | Perform a Compose function | function_dispatcher_t, dispatcher_api |
| compose_init_keys() | Initialise the Compose Keybindings | ::init_keys_api |
| delete_attachment() | Delete an attachment | |
| gen_cid() | Generate a random Content ID | |
| group_attachments() | Group tagged attachments into a multipart group | |
| op_attach_attach_file() | Attach files to this message | compose_function_t, compose_function_api |
| op_attach_attach_key() | Attach a PGP public key | compose_function_t, compose_function_api |
| op_attach_attach_message() | Attach messages to this message | compose_function_t, compose_function_api |
| op_attach_detach() | Delete the current entry | compose_function_t, compose_function_api |
| op_attach_edit_content_id() | Edit the 'Content-ID' of the attachment | compose_function_t, compose_function_api |
| op_attach_edit_description() | Edit attachment description | compose_function_t, compose_function_api |
| op_attach_edit_encoding() | Edit attachment transfer-encoding | compose_function_t, compose_function_api |
| op_attach_edit_language() | Edit the 'Content-Language' of the attachment | compose_function_t, compose_function_api |
| op_attach_edit_mime() | Edit attachment using mailcap entry | compose_function_t, compose_function_api |
| op_attach_edit_type() | Edit attachment content type | compose_function_t, compose_function_api |
| op_attach_filter() | Filter attachment through a shell command | compose_function_t, compose_function_api |
| op_attach_get_attachment() | Get a temporary copy of an attachment | compose_function_t, compose_function_api |
| op_attach_group_alts() | Group tagged attachments as 'multipart/alternative' | compose_function_t, compose_function_api |
| op_attach_group_lingual() | Group tagged attachments as 'multipart/multilingual' | compose_function_t, compose_function_api |
| op_attach_group_related() | Group tagged attachments as 'multipart/related' | compose_function_t, compose_function_api |
| op_attach_move_down() | Move an attachment down in the attachment list | compose_function_t, compose_function_api |
| op_attach_move_up() | Move an attachment up in the attachment list | compose_function_t, compose_function_api |
| op_attach_new_mime() | Compose new attachment using mailcap entry | compose_function_t, compose_function_api |
| op_attach_print() | Print the current entry | compose_function_t, compose_function_api |
| op_attach_rename_attachment() | Send attachment with a different name | compose_function_t, compose_function_api |
| op_attach_save() | Save message/attachment to a mailbox/file | compose_function_t, compose_function_api |
| op_attach_toggle_disposition() | Toggle disposition between inline/attachment | compose_function_t, compose_function_api |
| op_attach_toggle_recode() | Toggle recoding of this attachment | compose_function_t, compose_function_api |
| op_attach_toggle_unlink() | Toggle whether to delete file after sending it | compose_function_t, compose_function_api |
| op_attach_ungroup() | Ungroup a 'multipart' attachment | compose_function_t, compose_function_api |
| op_attach_update_encoding() | Update an attachment's encoding info | compose_function_t, compose_function_api |
| op_compose_edit_file() | Edit the file to be attached | compose_function_t, compose_function_api |
| op_compose_edit_message() | Edit the message | compose_function_t, compose_function_api |
| op_compose_ispell() | Run ispell on the message | compose_function_t, compose_function_api |
| op_compose_postpone_message() | Save this message to send later | compose_function_t, compose_function_api |
| op_compose_rename_file() | Rename/move an attached file | compose_function_t, compose_function_api |
| op_compose_send_message() | Send the message | compose_function_t, compose_function_api |
| op_compose_write_message() | Write the message to a folder | compose_function_t, compose_function_api |
| op_display_headers() | Display message and toggle header weeding | compose_function_t, compose_function_api |
| op_envelope_edit_headers() | Edit the message with headers | compose_function_t, compose_function_api |
| op_exit() | Exit this menu | compose_function_t, compose_function_api |
| op_forget_passphrase() | Wipe passphrases from memory | compose_function_t, compose_function_api |
| update_idx() | Add a new attachment to the message | |
