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 for the trial. Cancel any time.
- Check cadence (Agency)
- 5 min
- SSL pre-expiry alert
- 30 days
- Vendors watched
- 11
- Independent DNS resolvers
- 3
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 resolvers 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
Three independent DNS resolvers confirm 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
200 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.
$29/ month
- 10 monitored assets
- 1 seat
- 15-min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Team
For growing Webflow agencies with multiple designers and developers.
$79/ month
- 50 monitored assets
- 5 seats
- 10-min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
Agency
For agencies with a full Webflow client roster.
$199/ month
- 200 monitored assets
- 15 seats
- 5-min check cadence
- SSL + DNS + vendor monitoring
- Email + Slack alerts
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.