I am trying to replace @sub.domain.com with @newdomain.com in order to fix some email addresses. The plugin does not find any posts with the search string. If I remove the @ symbol, it does find the string. I think the plugin has trouble with the @ symbol.
http://wordpress.org/extend/plugins/search-and-replace/
no, i have tested this now. Works. @ is an normal string in the database and the first areaon the Search Replace plugin search about all tables and find/replace email-adresses.
My fault. I was searching for the wrong string. SOrry!