basically you can do manually everything that could be automated, and should be automated if high volume. - Manually send user welcome email, trial expiration

basically you can do manually everything that could be automated, and should be automated if high volume. - Manually send user welcome email, trial expiration email, etc... - Manually fix some errors although the process could be automated. - Manually cleanup logs, db tables, etc... - Manually check every service, db, website, etc... is up