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.

Spammers Spammers. I have NEVER given them permission to send me anything, let alone never ending SPAM.

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!

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.

Literally the worst Literally the worst. Do not waste time and money on them. The support is good for nothing. 1 whole day with their support repeating the same steps over and over again but still not able to setup account. Took 2 mins with mailgun to do the same. Wasted 1 day of my life. AVOID SPARKPOST.