HubSpot goes down.
Every client portal goes with it.
HubSpot agencies carry a concentrated platform risk that generic monitoring tools miss entirely. A single HubSpot incident affects your entire client roster simultaneously — and a custom domain SSL failure can happen independently on any portal. Merlonix watches both layers so you can respond before the first support ticket.
No credit card either way — start free, or trial the full workspace.
- Vendor monitored
- HubSpot
- SSL pre-expiry alert
- 30 days
- Check cadence (Agency)
- 1 min
- DNS change to alert
- < 10 min
Where HubSpot agencies get surprised
Platform concentration makes every HubSpot incident your problem.
A generic ping monitor checks HTTP responses — useful for single sites, useless for the platform-layer and SSL-layer failures HubSpot agencies actually encounter. Merlonix monitors the layers below and above the HubSpot application.
Platform-wide incidents
One HubSpot incident affects every client portal at once
HubSpot CMS incidents — form processing outages, landing page rendering failures, CRM API degradation — affect every portal your agency manages simultaneously. There is no isolation between client accounts on the platform. Without a monitoring layer above HubSpot, you find out when a client calls, not when the incident opens.
Custom domain SSL complexity
Custom domain SSL provisioning breaks silently on HubSpot
HubSpot provisions SSL automatically for custom domains — until a domain transfer, DNS provider migration, or CAA record conflict interrupts the renewal cycle. The HubSpot portal dashboard shows the domain connected; the actual SSL certificate is expired. Visitors see a browser warning. Your client calls you.
Subdomain routing drift
Blog and landing page subdomains lose DNS after CMS migrations
HubSpot agencies frequently configure subdomain routing for blog.clientsite.com, info.clientsite.com, and hs.clientsite.com. DNS changes during any migration — registrar switch, nameserver update, or hosting move — can silently break these CNAME records. Broken subdomains look like HTTP 404s to a ping monitor but fail entirely to resolve.
How it works
One layer above HubSpot. One layer below the custom domain.
Merlonix fills the two monitoring gaps HubSpot agencies consistently face: platform vendor status and custom domain infrastructure health. No overlap with HubSpot's own health dashboard — complementary coverage of the parts HubSpot doesn't watch for you.
01
Monitor HubSpot platform status
Merlonix polls the HubSpot status page continuously. When an incident opens — forms, CMS, CRM, or email delivery — your team gets an alert with the incident details and impact scope before HubSpot sends their first customer communication.
02
Verify custom domain ownership once
Add a DNS TXT record or .well-known file to confirm you are authorized to monitor each client domain. One attestation covers the primary domain and all HubSpot subdomains — blog, landing pages, CTA redirects.
03
SSL and subdomain DNS checked continuously
Each custom domain SSL certificate is validated end-to-end against its issuer. HubSpot subdomain CNAME records are verified against live DNS resolution on every check. Discrepancies surface as alerts within minutes.
04
Alerts land in Slack or email
Alerts include the portal, the check type, and the current state. Distinguish between a HubSpot platform incident (affects all clients) and a single-portal SSL issue. Route accordingly — broadcast the platform incident, handle the SSL issue per-client.
What the coverage means for HubSpot agencies
Platform incidents are unavoidable. Being unprepared for them isn't.
HubSpot agencies that monitor proactively have a different kind of client conversation during incidents. Instead of scrambling to confirm whether an issue is real, they're already on the HubSpot incident thread with a client communication drafted. That's the agency that clients renew with.
HubSpot
Platform monitored — one of 11 vendors polled on a shared schedule
30 days
SSL expiry warning window — enough time to renew before any client-visible browser warning
5 min
Check cadence on Agency plan — fast enough to catch a HubSpot incident before your client's first bounce
250
Maximum monitored domains — enough for a large HubSpot agency portfolio
Pricing
One flat rate. Every HubSpot portal in the agency.
No per-portal billing. No per-incident charges. One monthly rate for monitoring coverage across every client account your agency manages.
Starter
For solo HubSpot consultants managing a small client base.
$19/ month
- 15 monitored assets
- 3 seats
- 5 min check cadence
- SSL + DNS + HubSpot vendor monitoring
- Email + Slack + Teams alerts
Team
For HubSpot agencies managing a growing portfolio of portals.
$79/ month
- 60 monitored assets
- 10 seats
- 1 min check cadence
- SSL + DNS + HubSpot vendor monitoring
- Email + Slack + Teams alerts
Agency
For Diamond or Elite HubSpot partners managing 20+ client portals.
$199/ month
- 250 monitored assets
- Unlimited seats
- 1 min check cadence
- SSL + DNS + HubSpot vendor monitoring
- Email + Slack + Teams 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 + HubSpot vendor monitoring
- Email + Slack + Teams 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 when HubSpot goes down before your clients do.
Add your first HubSpot client domain in under two minutes. Merlonix monitors the HubSpot platform and all custom domain infrastructure immediately — SSL, DNS, and vendor status included. 14-day trial, no card required.