You are driving traffic to sites
you cannot guarantee are working.
An SSL expiry during a paid campaign turns every click into a browser warning. A DNS change for email setup breaks SPF and drops deliverability. A Mailchimp outage fires during your biggest send window. Merlonix catches all three before the campaign budget is spent.
No credit card either way — start free, or trial the full workspace.
- Check cadence (Agency)
- 1 min
- SSL pre-expiry alert
- 30 days
- Marketing vendors watched
- 11
- Encrypted DNS lookups
- DoH
Where digital marketing agencies take on silent risk
Campaign success depends on infrastructure you do not own.
You own the creative. You own the targeting. You do not own the domain, the hosting, the DNS provider, or the email platform. When any of those fail during a campaign, the outcome hits your performance report regardless of who caused it.
Campaign timing mismatch
SSL expires during a live campaign
Google Ads and Meta continue serving impressions to a landing page that shows a browser SSL warning. Every click is wasted ad spend. The ping monitor shows 200 OK — a valid HTTP response from a server with an expired cert — until someone opens the URL in an actual browser.
Email campaign setup risk
DNS changes for email break the site
Adding SPF records, DKIM selectors, and DMARC policies for a new email campaign means touching DNS. Every DNS edit is a chance to drop an A record, misplace a CNAME, or introduce a typo that breaks live resolution. Merlonix diffs expected records against live resolution and flags discrepancies before the campaign goes live.
Send window collision
Marketing platform outages during campaigns
HubSpot, Mailchimp, and ActiveCampaign all have partial outages. When one happens during your client's scheduled campaign send, sequences stall, automation triggers drop, and the campaign window closes with half the sends queued. Merlonix monitors marketing platform status and alerts you before you start the send.
How it works
Infrastructure coverage for agencies that live by campaign results.
Merlonix watches the infrastructure layer beneath your campaigns — SSL, DNS, and vendor status — so you can verify the environment before committing budget and get alerted if it changes during the campaign window.
01
Attest each client domain
Verify monitoring authorization with a DNS TXT record or .well-known file — one per domain. Covers the primary domain and any subdomains you add. Takes under two minutes per client.
02
SSL and DNS checked continuously
SSL certificates are validated end-to-end on every check — not just expiry date but chain completeness and issuer. DNS records are confirmed against live resolution on every check so a record that drifts from your expected state doesn't go undetected.
03
Marketing vendor status monitored
HubSpot, Mailchimp, ActiveCampaign, Stripe, Klaviyo, and six other common marketing platforms are polled on a continuous schedule. When a vendor incident opens, you get a notification before you start a send that depends on it.
04
Alerts arrive where your team works
Email or Slack — whichever your campaign ops team already monitors. Alerts include the domain, the check type, and the current state. No dashboard to log into. No context switching mid-campaign.
What the coverage means for marketing campaigns
Pre-campaign checks and live campaign protection.
Digital marketing agencies use Merlonix in two ways: a pre-launch verification pass before major campaign spend, and continuous background monitoring that alerts during active campaign windows. Both use the same account, the same domains, the same alert flow.
30 days
SSL expiry warning — enough lead time to renew before a campaign launches on an expiring cert
< 10 min
DNS change detection — catches SPF/DKIM/CNAME mistakes before campaign sends start
11
Marketing and infrastructure vendors monitored — including HubSpot, Mailchimp, and Klaviyo
250
Maximum domains on Agency plan — covers a full multi-client digital marketing portfolio
Pricing
One flat fee. Every client domain covered.
No per-check billing. No per-alert fees. Pick the tier that matches your client count and add monitoring to your campaign pre-launch checklist without adding to your cost structure.
Starter
For freelance marketers managing a small client list.
$19/ month
- 15 monitored assets
- 3 seats
- 5 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Team
For digital agencies running campaigns across multiple clients.
$79/ month
- 60 monitored assets
- 10 seats
- 1 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Agency
For agencies with large campaign budgets and zero tolerance for infrastructure surprises.
$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.
Verify the environment before you spend the budget.
Add your first client domain in under two minutes. Merlonix checks SSL, DNS, and all 11 vendor status feeds immediately. Make it part of your campaign launch checklist — 14-day trial, no card required.