1and1Mail is the most award-winning and lightweight email marketing software for small and medium businesses to create, schedule and send personalized mass email campaigns, manage email lists and design email newsletters. In a few minutes, your email would look magically professional and irresistible to your clients.

Auto IP Switcher - Proxy Servers

When you are sending mass emails, Auto IP Switcher can change your IP address automatically through different proxy servers so that your email accounts can avoid being blacklisted and you can send more emails out per day. It is most effective when you use multiple email accounts to send mass emails. Learn more.