专用到EDM邮件营销到达率测试工具功能有 1大批量快速收信和删信 2 账号清洗 3 导入和导出 4 自动分类管理 5 多用户多管理-Dedicated to EDM email marketing arrival rate test tool has 1 functions in large quantities and the fast delete letter 2 account cleaning 3 import and export 4 automatic classification