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.

Port25 renewal process and is top notch. Port25 support team has always been top notch. Seems this trend has also moved to renewals. The new renewal team (or new for me) reached out to me, extended our license for a short period without me asking in order to accommodate the US Mail and has strong follow up. We’ve used the product for years and always had great product performance and continual improvement. The new focus on renewal process is a sign that this software firm is applying best practices to all areas of operation. Bravo!

No way to contact the company We have been a customer for a while but haven't use the service for some time. Now I would like to cancel subscription but it's impossible as there is no way of contacting them without creating a ticket (and I can't login). These types of services just make you furious.

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.

We barred them! They need to clean their act up! Over a long period we've frequently noted .sparkpostmail.com as the sender host for persistent spammers... which tells us the 'service' is basically unpoliced; undermining the credibility of legitimate users! This has been getting worse in the last year or so! - So frequent is the annoyance that we now BAR all email which has the string .sparkpostmail.com in any header via a Cpanel filter! I'd think twice about using this 'service' unless you want to find your messages trashed along with the Nigerian Princes, 'one weird tricks' and shonky viagra sales.