Sender Certification UpgradeReach more inboxes—and stay there.
Join the exclusive email allowlist to become a recognized, reputable sender in inboxes across the globe.
Get started0% Inbox placement rate for Certified senders
0%Increase in attributable revenue from email
0+ years The longest-running email allowlist
Day 0 Program benefits give your sends a boost
What’s includedSafeguard your email deliverability.
Protect your inbox placement rate—especially during high-pressure periods—and send with confidence.
Preferential treatment from mailbox providers
Certified senders are immediately trusted by major mailbox providers, jumping to the front of the line and bypassing the filters that trap your competition.
Faster IP warming
Traditional IP warming means slow results. Accelerate the process so you reach full sending capacity faster and with less risk.
Global coverage
Backed by relationships with 75+ global mailbox and security providers, your emails get recognized—and prioritized—where it counts.
Exclusive data feeds
Sender Certification provides data revealing how your mail is received, filtered, and routed directly from the mailbox providers—no guessing.
Maximum inbox placement
Knowing your email was sent isn't the same as knowing it landed in inboxes. Get real-time placement data across providers and act before a drop becomes an ROI loss.
24/7 monitoring and alerts
Get real-time alerts to any changes to your sender reputation, security risks, or performance issues that might compromise your campaigns.
Customer Impact
"If nobody's seeing them, it really doesn't matter how amazing your emails are or how incredible the offers are. It's important to start by making sure your emails are delivered. Our partnership with Validity over the years helped us achieve this."
"The [Validity] platform gives users options and lets them choose how they want to work and what works best for them."
"We can be masters of our own destiny. We've got the expertise within our team...and of course, can still feed off the expert support of organizations like Validity to make sure we have the tools and insights to keep us on the right path."
"Validity is our 'security blanket'—our partnership meant we didn't panic when we hit bumps. Any issues that cropped up were quickly resolved by Validity."
"We love that Validity's tools are intuitive, provide us with proactive notifications, and can scale across programs as our needs expand."
"Because of the relationship with Validity, I'm able to focus on my critical work. I'm pretty much leaving it up to the experts to let me know if there's anything I need to take action on immediately."
"My customer success manager always has a pro tip and shares the next challenge we will be facing. Our partnership is a blessing. Really."
"With Validity, we create accessible, on-brand emails faster—while continuously building our team's skills and confidence."
"I work with many vendors, but there are only a couple of companies that are as important to fulfill our needs as Validity. There are no alternatives!"
"Validity played an integral part in helping us optimize our deliverability metrics and improve our Sender Score. We also used Validity to monitor the success of our efforts to 'warm up' brand new IP addresses. Validity helped us achieve a 10 percent increase in inbox placement rate year over year."
"Our business is seasonal. We have strong holiday goals and are always fighting for space in the inbox. Anything we can do to get our messages lifted is important. [Validity] keeps us ahead of the game—and that makes me look good!"
Keep exploringSender Certification works best alongside these Engage capabilities.
Inbox Placement & Deliverability
See exactly where your mail lands—by provider, IP, and domain—before and after every send. Real-time placement testing powered by Validity’s global seed network.
Learn moreLive Email Monitoring
Your emails keep working (or don’t) long after they leave your ESP. Get 24/7 monitoring for links, rendering, images, and sender authentication—and catch issues before subscribers do.
Learn moreCompetitor Intelligence & Inspiration
Monitor your competitor’s sends and browse a library of 1.2M+ campaigns. Know what's working in your industry before your next send.
Learn moreJoin the exclusive list of trusted senders.
Used by thousands of enterprise senders, Engage’s Sender Certification upgrade protects your email program by significantly reducing the risk of hitting a spam filter or IP blocker.
Get started