Gmail Promotions Tab: Annotations Preview

Email annotations bring your promotions to life with images, deals, expiration dates and more.

Blacklist Checker

Instantly check an IP or domain against major email blacklists including Spamhaus, SURBL, SORBS, and more.


Use Blacklist Checker


CIDR to IP Range

Enter a CIDR notation to instantly convert it to an IP range.


Use CIDR to IP Range

SPF Analyzer

SPF is a method to prevent email sender address forgery. Enter your domain to analyze its SPF record.


Use SPF Analyzer


IP Range to CIDR

Enter a IP range to instantly convert it to a CIDR notation.


Use IP Range to CIDR

DMARC Wizard

Enter your domain to analyze your DMARC record or create a DMARC policy for your domain.


Use DMARC Wizard


DNS Lookup

Perform a DNS lookup against multiple widely used nameservers.


Use DNS Lookup

Resources for #SeriousSenders


We’re going BIG at eTail West this year.

Though it’s not our first year attending eTail West, this year, we’re doing it right. We’re a sponsor of the conference in Palm Springs, CA, from February 19-22. Why? Because we know marketers are ready to tear their hair out over working with other email data vendors. We believe every marketer deserves stress-free email intelligence, […]

See us at the Digital Summit Phoenix on February 11.

We’re done with winter. It’s too cold. So, we’re jetting off to Phoenix for the Digital Summit on February 11-12. Not only will we be there to talk to you about our stress-free, single-point email intelligence platform, but our very own director of marketing Sam Douglass III will be taking the stage to talk email […]

Join us at the very first Canadian Email Summit!

Email is a global experience, so we’re super thrilled to announce our sponsorship of the inaugural Canadian Email Summit in Toronto! Hosted on February 27 at The Spoke Club, our director of industry relations Matthew Vernhout (a Canadian himself, eh), will be on site to give a short presentation and network with attendees. Register now […]




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