April 5, 2021

If you're sending cold email, you want to make sure your email address and domain is "warmed up". Now you can do that completely free.

February 11, 2021

Search real-time data from everyone else's email marketing and cold email campaigns. Make better decisions with your own campaigns.

December 29, 2020

Want to learn about email headers? This article will help you understand what an email header is and how to use it.

December 3, 2020

Wondering why your emails are going to spam? Discover the five reasons why and how to avoid spam filters.

November 26, 2020

Want to resend an email? This article is a step-by-step guide on how to do it in both Gmail and Outlook.

November 23, 2020

We’re often asked to provide the IP addresses and domain names of the servers we use to send users’ emails. …

November 13, 2020

Recently, two email industry colleagues independently reported something odd to me. Each composed an email in Gmail, sent it, and …

November 6, 2020

Curious about email deliverability? This article covers what it is, how to measure and improve it, and the factors affecting it.

November 2, 2020

Looking for the best email validation API? Discover 7 powerful email verification API tools with their features, pricing and ratings.

October 7, 2020

If your Zendesk sub-domain gets blacklisted, emails between requesters and agents start going to Spam, and you have a real mess on your hands.

September 18, 2020

Ever since we launched the ability to hook your account up to an external SMTP provider and essentially “break” Gmail’s …

September 14, 2020

Recently Spamhaus listed my primary domain on the DBL. Was it justified? You can decide that, but here are all the consequences of being listed.