Send Unlimited Emails: Sending emails is a task we need to do on a regular basis. But, sometimes we need to send bulk emails and this is when we need an external email server. We can avail services from any of the popular email providers like Google Gmail, Yahoo Mail and so on. But, their free service has strict web mail usage guidelines and they require you to pay after a specific number of emails sent per day. Adcrux Bulk SMTP is a great option that offers unlimited email sending for free with high quality service.They provide many useful features that would be useful for all users ranging from bulk email marketers to someone who wants to send an occasional newsletter.