The APPLE recommends to generate a password whenever a new app (email app) is to be installed. This is laborious and not to be insisted. Google(gmail), Microsoft(outlook) and yahoo mail do not insist a separate password.
Apple insists on generating an exclusive password when a new app is to be installed. This procedure seems to be laborious and certain times after incorporating the generated password,the app do not agree, GMAIL( Google),microsoft(outlook)yahoo mail(yahoo) etc. do not insist.Hence the APPLE should agree to use the password tied up to the iCloud mail ID. A thought should be given on this suggestion.