具有免费许可证的Mac版Mailtrain的替代品

• Mac
  所有平台 Windows Mac Linux Chrome OS Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) Shopify Magento Community Edition WooCommerce Amazon SES (Simple Email Service) Zapier Facebook Ads
• 免费许可证
  任何牌照 免费许可证 开源许可证 商业牌照