The ease of use is great for anyone who has never used this type or tool before! I am able to send out mass emails quickly without having any problems at all that we have had in past years when trying other programs/tools over our email list management system. There really isn't anything about it right now - which seems like an odd thing given how new they are compared to some older products available online but maybe there's something else going? Not sure yet since haven been using them only 3 weeks so far though everything looks good thusfar!! Email marketing campaigns were not working well prior until recently due their issues finding reliable ways around spam filters etc.. We've noticed significant increases from sending through these services after switching back againt previous methods previously employed by us.