Office 365 • G-Suite • Hotmail • Yahoo • Gmail
Email deliverability is complex, and even small changes to your campaigns can feel overwhelming.
Beyond the content itself, many other factors play a critical role in determining whether your emails actually reach the inbox.
If you're looking for a thorough email audit, ongoing support, or expert help setting up and configuring your email for optimal delivery—I'm here to help.
My name is Henry Timmes, and I've built a career around improving email deliverability. I founded Unlock The Inbox, Zerobounce, Postbox US, and Campaign Cleaner—each focused on enhancing different aspects of email performance.
I specialize in B2B data hygiene, which is the #1 cause of low response rates. Poor data quality doesn’t just hurt deliverability—it can damage your sender reputation and get you blacklisted.
When I talk about data hygiene, I’m not just referring to running your list through a basic email validation tool. Those tools are often the reason you got in trouble in the first place—labeling addresses as “valid” when they aren’t. In the B2B world, “valid” just means the email didn’t bounce. It doesn’t mean the person is real, reachable, or still with the company. I'll help you identify and remove emails tied to people who’ve moved on, retired, or passed away—and where possible, find the real email address instead.
I’ve seen email addresses continue “engaging” with campaigns—opening and clicking—even years after the owner passed away. Why? Because advanced email security systems like Proofpoint, Mimecast, and others often simulate clicks and opens while scanning for threats. These systems also monitor how many inactive or non-existent addresses you're sending to, which can quietly damage your reputation.
Many outreach lists built through tools like Apollo, Seamless, or RocketReach include outdated contacts and multiple emails per lead. These platforms are essential for outbound work—but identifying the hidden landmines in that data? That’s where I come in. I specialize in uncovering and removing risky addresses before they quietly sabotage your deliverability.
Imagine sending to email addresses labeled as “active,” but in reality, you're targeting spam filter bots that monitor inactive or non-existent accounts first. Instead of reaching real people, you're triggering systems that quietly mark you as a risk. Not exactly a smart move.
I'm proud to be one of the few individuals listed on the DMARC Standard, having contributed to one of email’s core security frameworks. Over the years, I’ve worked with Fortune 500 companies and small businesses alike to refine their email strategies and drive better results.
With a strong background as a developer and coder, I specialize in automating processes and building tools to solve unique challenges. This technical expertise allows me to deliver customized solutions that simplify complex tasks, save time, and boost efficiency.
I understand that every company’s email needs are different—whether you’re sending product announcements, weekly promotions, sponsored content, affiliate campaigns, website traffic drivers, or cold outreach.
Let’s work together to ensure your email campaigns perform at their best.
Are You Ready To Experience The Difference?
Become a part of the Campaign Cleaner community today, and join countless satisfied customers who have witnessed significant improvements in their email deliverability and campaign success. Don't let HTML issues hold you back; let Campaign Cleaner optimize your campaigns and boost your inbox rates.