Amazing customer service! Amazing customer service! I had never heard of DKIM before, but they helped me generate a key, send it over to our devops to add it to our DNS, and validate it in Sparkpost in no time. Very quick back and forth.

We have been using Sparkpost for… We have been using Sparkpost for delivery of one of our most important customers. The entire Sparkpost team is always there for our clients last minute needs and changes and makes what could be a difficult situation work exceptionally well. We love the Signal Analytics that comes with the account and hope to someday grow to where we can add in some more of the professional delivery services.

SparkPost is one of the best places for… SparkPost is one of the best places for anyone looking for robust and reliable mail services. Great control panel, awesome metrics, and unrivaled API power and flexibility. I'm one of their happy customers since years, and going to remain for decades to come.

Horrible company that condones spammers… Horrible company that condones spammers and doesn't accept emails to their abuse email address advertised on the website. When you report a spammer they immediately reject the email to their abuse address. This company is in violation of the federal CAN-SPAM act and should be shut down by the FTC.

Sparkpost & MessageBird are irresponsibles Sparkpost & MessageBird are irresponsibles with their account suspension, they don't care about the impact they can produce to the customers, and they don't care about the service. They cut our service because they didn't answer to more than 25 emails and 15 tickets we opened to inform that we need the payment information which they changed when moved from Sparkpost to MessageBird. They responded 6 months latter with wrong information delaying more and more the payment, but then they cut the service. It is the worse service I have ever received.