Just wanted to let everyone know that my account at SparkPost got suspended because of a domain extension used in the body of an email my site sent. I responded asking why I was suspended: Basically, they didn't like a specific domain extension that was inside the email body. The worst part is what other extensions are they banning? There are a ton of extensions out there. They didn't even send out an email stating to customers that "X" extensions are going to be banned. SparkPost suspended without notice. Looking over their email policy, there is no mention of banned extensions in email bodies. Moving away from SparkPost for forums. I'll only use them for low volume sites. Also thinking about removing content from emails, similar to how this forum works.