Keeps your email out of the deep end.
Out of
spam.
Into the inbox.
Every check. Before and after.
Real: our own domain — clawed out of a full Gmail spam jail. SPF · DKIM · DMARC all now passing.
blacklisted · content flagged
delisted · content clean
We used this to claw our own domain out of a full Gmail spam jail. Surfscaler's outbound → spam · fixed auth · repaired reputation · delisted · now landing primary inbox. That's the whole product.
Three layers. All three matter.
Providers verify you're really sending. Without it, nothing else matters.
The score Gmail keeps on your domain — hidden, critical, fixable.
Filter patterns that sink good email — removed at the template level.
System diagram
Deliverability fix. Not an email redesign.
Fixed at the DNS and reputation layer — not with tricks.
“Most agencies will redesign your email. Almost none can fix why it isn't being delivered. We earned this competence the hard way — on our own domain.”
Casey Hamilton, Surfscaler
Diagnose. Fix. Delist. Watch.
Every way email drowns — and how it gets pulled out.
// tap a category — auth, reputation, content. each card: the problem found, the fix applied, the transition.
SPF record missing — every outbound email failed provider authentication checks.
Correct SPF record published in DNS. All outbound mail now authenticated.
DKIM key absent — emails unsigned, no cryptographic proof they came from you.
DKIM key generated, published, and aligned with the sending domain.
DMARC set to 'none' — spoofed messages could pass as legitimate, reputation unprotected.
DMARC policy set to p=reject with forensic + aggregate reporting enabled.
Domain listed on 2 blacklists (Spamhaus + Barracuda) — mail blocked at the gateway.
Root cause fixed, delisting requests filed and tracked to confirmed removal.
Shared-IP with poor send history dragged domain reputation into the red.
Moved to dedicated IP, structured warmup plan executed over 3 weeks.
Email body contained 4 known spam-trigger phrases — caught by filter before delivery.
Triggers removed, link-to-text ratio corrected, plain-text variant added.
Emails landing in spam folder across Gmail, Outlook, and Apple Mail.
Auth + reputation + content all fixed. Placement re-tested across providers.
Showing 7 of 7fix types · sample data, representative of real deliverability failures — not any specific client's numbers.
One pull. Every thing drowning your email.
Fixed. Tested. Staying there.
Every failure, surfaced. SPF · DKIM · DMARC · blacklists · content — before and after.
SPF, DKIM, and DMARC configured correctly so providers trust every email you send.
Found on every list, cause fixed at the root, delisting request filed and tracked.
Real inbox-vs-spam tests across Gmail, Outlook, and Apple Mail — before and after the fix.
Spam-trigger words, broken formatting, bad link and image ratios — flagged and cleaned.
Automated placement probes and alerts. You know before a slip costs you.
Email that matters → we fix it.
this is right if you...
Send email that makes you money — outreach, invoices, reminders, marketing
Noticed open rates cratered, or customers say they never got your message
Ran a campaign recently and got zero replies despite a good offer
Know you're blacklisted but don't know how to fix it
Want to cold-email and can't risk landing in spam on day one
not right if you...
Barely send email at all — there's nothing here to fix
Want tricks to "beat" spam filters — we only fix legitimacy
Need a guarantee that Gmail will always deliver — no honest provider can promise that
Are looking for a full email marketing overhaul — this is infrastructure, not copy
Your email deserves to land.
Tell us your domain and what's happening. We run the diagnosis and tell you exactly what's broken — and what it takes to fix it.
Run the audit →