Below are some of the useful workflow script that we use frequently in our 11i/R12 instances
VERIFY THE WORKFLOW IMAP SETTING
set pagesize 100
set linesize 132
set feedback off
set verify off
col value format a35
col component_name format a30
select c.component_id, c.component_name, p.parameter_id, p.parameter_name, v.parameter_value value
from fnd_svc_comp_param_vals_v v, fnd_svc_comp_params_b p, fnd_svc_components c
where c.component_type = 'WF_MAILER'
and v.component_id = c.component_id and v.parameter_id = p.parameter_id and p.parameter_name in ( 'INBOUND_SERVER','ACCOUNT', 'REPLYTO')
order by c.component_id, c.component_name,p.parameter_name;