Your client calls about the SSL warning.
You should have known three weeks ago.
Web development agencies are accountable for infrastructure long after the project closes. SSL certificates, DNS records, and hosting vendor status don't come with maintenance contracts — but client expectations do. Merlonix watches everything so you don't have to remember to.
No credit card either way — start free, or trial the full workspace.
- SSL pre-expiry alert
- 30 days
- DNS change detection
- 5 min
- Vendors monitored
- 11
- Max assets (Agency)
- 250
Where web development agencies get surprised
Infrastructure you built but don't own — and still get blamed for.
Web development agencies exist in an uncomfortable middle ground: you configured the infrastructure at launch, the client owns it now, but your name is first in the support call when something breaks. SSL expiry, DNS errors, and hosting outages are silent until they aren't.
Post-launch SSL drift
Certificates expire on sites you handed off months ago
Let's Encrypt auto-renewal works until it doesn't. A hosting migration, a DNS change, or a CAA record conflict silently breaks renewal. The first indication is a browser warning — usually reported by the client, not caught by your team. By then the SEO damage and trust erosion are already underway.
DNS fragility after migrations
Every handover creates DNS drift risk
Domain transfers, registrar switches, CDN migrations, and subdomain additions each carry DNS misconfiguration risk. A misplaced CNAME, a missing MX record, or a TTL set too high after a migration can render parts of the site unreachable — without any HTTP-level indicator your ping monitor can catch.
Hosting vendor dependency
Your client's site depends on infrastructure you don't control
Vercel, Netlify, Cloudflare, AWS, GitHub Pages — every deployment platform has outages. When the hosting vendor goes down, the site goes down, and the client calls the agency. Merlonix monitors 11 major vendor status pages so you can respond with context before you even receive the first message.
How it works
Every client site. One place. One alert when something breaks.
Merlonix is built for agencies managing portfolios — not individual site owners checking a single domain. The multi-tenant model lets you cover 10 or 200 client sites from the same account without billing complexity.
01
Add each client site once
Verify domain ownership with a DNS TXT record or .well-known file — one attestation per domain, covering all subdomains you monitor under it. Takes under two minutes per client.
02
SSL and DNS checked continuously
Certificates are validated end-to-end — issuer, chain completeness, key algorithm, and expiry date — not just port-443 reachability. DNS is checked against live resolution on every check. Discrepancies surface immediately.
03
Hosting vendor incidents tracked automatically
Vercel, Netlify, Cloudflare, AWS, GitHub, and six more hosting-adjacent vendors are polled every five minutes. Incident opens, you know. Incident resolves, you know. No manual status page checking.
04
Alerts go to Slack, Teams, or email
Every alert includes the domain, the check type, and the current state — enough context to respond before opening a browser. Route critical alerts to on-call channels; route informational alerts to a digest.
What the coverage means for web agencies
From reactive firefighting to proactive client trust.
Web development agencies that monitor proactively have a different kind of client conversation. Instead of explaining why a site was down for four hours, they're sending a message at 2am saying they caught it before any end users were affected. That difference is the foundation of a retainer relationship.
30 days
SSL expiry warning window — enough time to renew before any client notice
< 10 min
Median time from DNS change to alert on Agency plan
11
Vendor status pages monitored — hosting, CDN, and deployment platforms included
0
Per-domain billing surprises — flat monthly rate regardless of asset count
Pricing
One flat rate. Every client site in the portfolio.
No per-domain billing. No per-alert charges. Pick the tier that fits your client count and grow into it without per-site pricing that punishes a growing agency.
Starter
For freelancers and solo developers managing a small client list.
$19/ month
- 15 monitored assets
- 3 seats
- 5 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack + Teams alerts
Team
For growing web agencies with an active project roster.
$79/ month
- 60 monitored assets
- 10 seats
- 1 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack + Teams alerts
Agency
For agencies managing a full portfolio of live client sites.
$199/ month
- 250 monitored assets
- Unlimited seats
- 1 min check cadence
- SSL + DNS + 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 + 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.
Stop finding out from the client.
Add your first client domain in under two minutes. Merlonix starts watching immediately — SSL, DNS, and all 11 hosting vendor status feeds. 14-day trial, no card required.