The email deliverability platform for cybersecurity teams
Folderly diagnoses why your emails fail and fixes the root causes, so your outbound reaches technical buyers instead of the quarantine folder.
How our email deliverability platform accelerated performance for customers across our case studies
You are selling security to people who filter everything
Security buyers sit behind the most aggressive filtering in the market. They run the gateways, they wrote the rules, and their organisations quarantine anything that looks remotely like the phishing they spend all day defending against. Selling to them means clearing a bar that most senders never encounter.
It gets harder. Security vendors write about credentials, breaches, exploits and urgency, which is precisely the vocabulary filters are tuned to catch. Content that is entirely legitimate reads as suspicious to a system built to be suspicious, and a slightly imperfect DNS setup is all the excuse it needs.
Warm-up does not solve this. It moves one signal, early, and it has nothing to say about how a security gateway scores your domain, your authentication or your content once you are sending at volume.
How Folderly manages deliverability for security vendors
Diagnose
We audit every layer that decides whether your email is delivered, including how the security gateways your buyers sit behind are currently scoring your domains. You get the specific reasons your email is failing, ranked by impact.
Fix
Your specialist corrects authentication, rebuilds damaged reputation, restructures sending patterns, and removes the list problems that keep re-triggering filters. In this category, authentication is not a formality, it is the first thing a security team checks.
Monitor
Seed-based placement testing runs continuously across every major provider, so a change in how your email is treated shows up the day it happens. You find out while it is still small, not after it has cost you a campaign.
Compound
A domain with a long, clean, well-authenticated history is treated very differently by a gateway than a new one. Managed continuously, that history becomes the reason your email keeps landing while competitors get quarantined.
What the platform covers
Authentication and DNS
SPF, DKIM and DMARC configured correctly and kept correct. Selling security with a broken DMARC record is a credibility problem as much as a deliverability one, and your buyers will notice.
Reputation monitoring and repair
Domain and IP reputation tracked across every major provider, with active remediation the moment a signal degrades. Security-adjacent senders get less benefit of the doubt than anyone.
Inbox placement testing
Seed-based testing shows where your email actually lands, including behind the enterprise gateways your buyers run. Delivery to the server tells you nothing about whether the gateway quarantined it.
Email validation
Validation that checks ESP-specific filters and email protection tools, not just syntax. Security organisations run spam traps and protective tooling that ordinary verification cannot see.
Blacklist monitoring
Continuous monitoring, so a listing is caught early. For a security vendor, appearing on a blacklist is not just a delivery problem, it is a conversation you do not want to have with a prospect.
A named deliverability specialist
One person accountable for your outcome, who understands how technical buyers and their gateways behave and does not need it explained each time.
Who this is for
Sales, GTM and revenue leaders
You own a pipeline number and your buyers are the hardest people on the internet to email. You need to know how much of your outbound is even arriving.
Cybersecurity and security-adjacent software
Security platforms, infrastructure and tooling vendors running active outbound into enterprise security teams and the gateways they operate.
Your best-fit accounts never reply
Not because the message is wrong, but because it is being quarantined before anyone reads it, and nothing in your sequencer tells you that is happening.
Folderly case studies
Discover Folderly customers’ success and see how best-practice infrastructure can unlock new levels of email marketing performance.
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(Up to 50 employees)
(Over 250 employees)
(50 to 250 employees)
(50 to 250 employees)
(Up to 50 employees)
(Over 250 employees)
How this compares to setting it up once
Most tools help you get set up. When your buyers run the filters, what matters is what happens in the months after.
| What changes | The usual approach | With Folderly |
|---|---|---|
| Getting set up | You configure it once and hope it holds | We set it up, then keep it right as your stack changes |
| Knowing it works | You can see your emails were sent | You can see where they landed, including behind gateways |
| Selling to security buyers | Your own DNS is a credibility risk | Your authentication stands up to the people checking it |
| When something breaks | You find out when replies dry up | You hear from us the day it starts slipping |
| Getting it fixed | Your team works it out from a dashboard | Your specialist fixes it and owns the result |
Supported ESPs
Folderly integrates via API and SMTP with major email service providers and supports custom providers too
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Folderly works with any sending architecture
Don't see your ESP on the list? Request a demo and we'll show you how Folderly can work with the tools you already use.
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Guides
If you want to understand or fix it yourself
Data and proof
If you want evidence before a conversation
Free tools
If you want to check something right now