Webflow migrations break SSL.
You find out last.
Every Webflow project migration or domain rebrand is a window for SSL failure and DNS mis-routing. A site can return a 200 OK and still serve an expired or broken certificate. Merlonix watches the layer your uptime monitor skips — so you catch it before the client calls.
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 Webflow agencies get caught out
Three failure modes specific to Webflow client portfolios.
Uptime monitors check HTTP response codes. The Webflow-specific failures — SSL during project migration, DNS after a rebrand, and upstream service outages — all fail at a different layer. They're the failures that generate client calls, not silent 404s.
Migration window
SSL breaks during project moves
Moving a Webflow project to a new workspace, cloning for a rebrand, or switching from webflow.io to a custom domain all require DNS changes. During propagation, the certificate chain can be incomplete or serving the wrong domain — and your uptime monitor shows green the whole time.
DNS mis-routing
Old CNAME records linger after rebrands
When a client rebrands or moves to a new domain, the old DNS records rarely get cleaned up immediately. Subdomains point at deprecated Webflow projects, MX records reference old mail providers, and CNAME chains break. Merlonix diffs expected records against live DNS resolution and alerts within minutes of drift.
Integration dependency
Zapier, Memberstack, and Airtable go down
Webflow sites increasingly depend on third-party services for auth, forms, CMS syncs, and checkout logic. When Zapier has a partial outage or Airtable degrades, Webflow-native features stop working. Your client sees broken forms; your team learns from a support ticket.
How it works
Set up once per client. Watch every migration from there.
Merlonix is designed for Webflow agencies managing many client sites — one account, every domain, one alert flow that only fires when something actually needs attention.
01
Add your Webflow client domains
Verify ownership with a DNS TXT record or .well-known file — one attestation per domain. Takes under two minutes. Merlonix supports domains you manage DNS for and domains where you only have hosting access.
02
SSL and DNS checked every 5 minutes
A DNS-over-HTTPS resolver confirms your expected records on every check. SSL chains are validated end-to-end — expiry, issuer, chain completeness, and domain match. Migration windows are covered because checks continue across the entire propagation period.
03
AI separates propagation noise from real problems
Transient DNS propagation during Webflow migrations can trigger false positives on simpler monitors. Merlonix classifies each change — propagation delay versus genuine drift — so you are not paged for a record that resolves correctly five minutes later.
04
Alert goes to Slack or email, not a dashboard
Alerts include domain, check type, the specific record or certificate field that changed, and recommended action. No login required to triage. No additional tab to check between client calls.
What the numbers mean for Webflow agencies
Monitoring that covers the Webflow-specific failure surface.
Webflow agencies don't have a dedicated ops team. You have designers and developers who also handle migrations and client handoffs. Merlonix is built around that constraint — minimal setup, maximum signal, zero dashboards to babysit between client calls.
30 days
SSL expiry warning lead time — enough runway to fix before the client site shows a browser warning
< 10 min
Time from DNS change to alert — covers the full Webflow propagation window without false positives
11 vendors
Upstream services monitored — including Zapier, Stripe, and Airtable dependencies common in Webflow stacks
250 assets
Maximum monitored domains on the Agency plan — enough for a full Webflow client roster
Pricing
Flat monthly fee. Every client domain included.
No per-domain charges. No per-alert fees. Pick the tier that fits your client count and grow without billing surprises.
Starter
For solo Webflow developers watching a handful of clients.
$19/ month
- 15 monitored assets
- 3 seats
- 5 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Team
For growing Webflow agencies with multiple designers and developers.
$79/ month
- 60 monitored assets
- 10 seats
- 1 min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Agency
For agencies with a full Webflow client roster.
$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.
Stop finding out from clients.
Add your first Webflow 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.