Lets you send unsolicited SPAM!
For all the spammers out there who were concerned that SendInBlue would not let you spam, do not worry. They have no problem allowing spammers to send mass messages. Case in point, last week I received the same, unsolicited spam all at the same time in (4) of my company's general inboxes. (It was from specializedcontentwriting.com in case you are interested, because SendInBlue sure isn't.) I sent a notice to SendInBlue's abuse department, along with the headers, using the contact form on the SendInBlue website. Today, I received (4) more of the same spam via SendinBlue. So they have not done anything. That means that if you want to send lots of spam, SendInBlue is the PERFECT tool for spammers. Until of course Spamhaus.org notices, and shuts down some of their IP addresses. Until then, SPAM AWAY!