B2B clients notice SSL failures
during security reviews, not after.
B2B clients run security reviews, vendor audits, and procurement checks that include SSL certificate inspection. A wildcard certificate expiring across client subdomains, a CRM integration subdomain with a broken DNS delegation, or a sales pipeline page returning a browser warning during a prospect's due diligence all reflect on the agency. B2B infrastructure failures cost more than a client call.
No credit card either way — start free, or trial the full workspace.
- Check cadence (Agency)
- 1 min
- SSL pre-expiry alert
- 30 days
- Vendors watched
- 11
- Encrypted DNS lookups
- DoH
Where B2B agencies get caught out
Three failure modes specific to B2B client portfolios.
B2B agency work carries a higher trust cost per incident than consumer work. Client-facing portals, sales pipeline infrastructure, and CRM integrations are part of the client's revenue operations — and SSL failures in that infrastructure surface in the worst possible contexts.
Wildcard SSL expiry
A wildcard certificate expiry takes all client subdomains offline at once
B2B agencies frequently use wildcard SSL certificates to cover client-facing portals, login pages, and API subdomains under a single certificate. When a wildcard certificate expires, every subdomain it covers shows a browser security warning simultaneously. The client-facing portal, the demo environment, and the reporting dashboard all fail at once. A 30-day expiry alert is the difference between a planned renewal and an emergency.
CRM subdomain delegation drift
HubSpot and Salesforce form subdomains break after IT changes
B2B clients often run custom domains for HubSpot forms (forms.clientdomain.com), Salesforce community portals, or marketing automation landing pages that are set up via CNAME delegation to the CRM provider's CDN. When the client's IT team changes DNS providers, migrates mail hosting, or updates nameservers for unrelated reasons, those CNAME records are frequently missing from the new configuration. The integration breaks silently.
Enterprise security audit exposure
Expired or misconfigured SSL is flagged in vendor security reviews
Enterprise B2B clients conduct vendor security reviews that include checking SSL certificate validity, certificate authority trust, and certificate expiry timelines. An agency-managed site with a certificate expiring in less than 30 days, a broken certificate chain, or a mismatched domain SAN will be flagged. These findings can delay procurement, trigger contract review, or require remediation documentation — all at the agency.
How it works
Full-stack monitoring for B2B client infrastructure.
Merlonix is designed for agencies managing client portfolios with complex subdomain configurations and CRM integrations — one account, every domain and subdomain, one alert flow that gives you time to act.
01
Add client primary domains and subdomains
Verify ownership with a DNS TXT record — works for primary domains, client portal subdomains, CRM integration subdomains, and wildcard certificate coverage domains. One verification per apex domain. Takes under two minutes per client.
02
Full SSL chain validation with 30-day expiry lead time
Merlonix validates the complete certificate chain on every check interval — expiry date, issuer, chain completeness, domain match, and SAN coverage. Wildcard certificate expiry fires 30 days ahead. Broken certificate chains, issuer changes, and SAN drift alert immediately.
03
CRM subdomain CNAME integrity monitored continuously
A DNS-over-HTTPS resolver verifies every CNAME, A record, and NS record on every check interval. When a client's IT migration breaks the HubSpot or Salesforce CNAME delegation, the alert fires within minutes — before any prospect notices the form is broken.
04
Vendor status for CRM and marketing automation platforms
Merlonix monitors upstream vendor status for CRM and marketing automation providers common in B2B stacks. When a HubSpot or Salesforce platform incident affects client integrations, you see the upstream cause in your alert feed — not after your client discovers the pipeline form is down.
What the numbers mean for B2B agencies
Monitoring built for higher-stakes client infrastructure.
B2B agencies manage client web infrastructure that directly touches revenue operations. A broken portal SSL or a failed CRM subdomain has consequences beyond a client call. Merlonix is built to give B2B agencies the lead time and signal quality that higher-stakes client relationships require.
30 days
SSL expiry warning lead time — enough runway to renew wildcard certificates and remediate chain issues before enterprise security audits flag them
< 10 min
Time from DNS change to alert — catches CRM subdomain CNAME drift before a prospect discovers the broken pipeline form
11 vendors
Upstream services monitored — including CRM and marketing automation providers common in B2B agency stacks
250 assets
Maximum monitored domains on the Agency plan — covers primary domains, portal subdomains, and CRM integrations across a full B2B client roster
Pricing
Flat monthly fee. Every domain and subdomain included.
No per-domain charges. No per-subdomain fees. Pick the tier that fits your client count and grow without billing surprises.
Starter
For consultants managing a small B2B client portfolio.
$19/ month
- 15 monitored assets
- 3 seats
- 5 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Team
For B2B agencies with multiple clients and complex subdomain configurations.
$79/ month
- 60 monitored assets
- 10 seats
- 1 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Agency
For agencies with a full B2B client roster including portals and CRM integrations.
$199/ month
- 250 monitored assets
- Unlimited seats
- 1 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Compliance
For regulated-vertical teams that need continuous, audit-ready evidence.
$699/ month
- 500 monitored assets
- Unlimited seats
- 1 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Beyond uptime
More than a 200 OK on every client site
The same account also watches the infrastructure and reputation layers a standard uptime check never reaches — each a live check you can turn on.
Turn monitoring into revenue
Resell client-ready reports as your own
Monitoring doesn’t have to be a cost line. Package the branded report and white-label status page as a deliverable in your retainer — the tooling underneath stays invisible, so to the client the work is yours.
Reports under your brand
Hand each client a polished SSL, DNS, and security report carrying your agency’s name and logo — not ours.
Status pages on their domain
Publish a live status page at status.theirbrand.com with automatic TLS and no “Powered by Merlonix” badge.
Your margin to keep
You pay one add-on cost and package it into the retainer you already bill. The markup — and the margin — are yours.
Common questions
Frequently asked questions
Do I need DNS or registrar access to my clients’ domains to monitor them?
No. Merlonix monitors from the outside in — it probes each domain’s public SSL certificate, DNS records, WHOIS/registration data, and HTTP responses the same way a browser or DNS resolver would. You add an asset by its hostname; no access to the client’s registrar, DNS provider, or servers is required.
What does Merlonix actually check on each site?
Every monitored asset gets continuous SSL-certificate (expiry, issuer, and chain changes), DNS-record, domain-registration/expiry, and uptime monitoring by default. You can also enable infrastructure and reputation checks a standard uptime monitor never reaches — security headers, DNSSEC/DANE, domain-hijack/registrar-lock, blocklist, and cron/heartbeat monitoring — each a live check you turn on per asset.
How often does it check, and how do alerts reach me?
Checks run on your plan’s cadence — as often as every 1 min on Team and above, and every 5 min on Starter. When a certificate, DNS record, registration, or response changes, you get an alert by email and Slack. Alerts fire on real state changes between definitive checks, not on a transient blip.
How much does it cost, and is there a free option?
Yes — there is a free $0 plan (no credit card) to watch a small number of assets, and paid plans start at $19/mo (Starter). You can also start a 14-day full-workspace trial with no card. See the pricing grid above for the assets, seats, and check cadence on each tier.
Know before your client does.
Add your first B2B client domain in under two minutes. The first SSL or DNS alert tells you whether monitoring was worth it — usually within the first week. 14-day trial, no card required.