IP Range to CIDREasily convert an IP range into CIDR blocks.
"250ok has built a best-of-breed platform that addresses the concerns of today's data-driven marketers."
Len Shneyder
VP of Industry Relations at SendGrid
Instantly check an IP or domain against major email blacklists including Spamhaus, SURBL, SORBS, and more.
SPF is a method to prevent email sender address forgery. Enter your domain to analyze its SPF record.
Enter your domain to analyze your DMARC record or create a DMARC policy for your domain.
Perform a DNS lookup against multiple widely used nameservers around the world.
Email deliverability is tied directly to retail businesses’ financial success. If people don’t see your emails, they can’t click your emails, and thus, cannot purchase things from you. Bad news. When you consider you likely require log-in to complete a purchase, if they don’t get that password reset or any other critical UX components (think […]
We get it. We’re email deliverability nerds, but you (likely) aren’t. If you are, that’s awesome and we should be pals. But if you’re not, that’s okay, we’re still here to support you in all your email efforts. How? By giving you the map you need to be confident you’re sending your marketing and transactional […]
We’re back at it! Today we’re excited to unveil the latest addition to the 250ok suite: 250ok Prospect. Since some of the 250ok team worked at email service providers (e.g., ExactTarget/Salesforce, Marketo, Adobe, Oracle, SparkPost, SendGrid), we know one of the most significant challenges they face is gaining insight into customers that have not yet […]
