SMS alerts for
SSL, DNS & uptime monitoring
Text-message alerts for the checks you cannot miss.
How it works
How Merlonix delivers to SMS
Merlonix sends a text message to the responder phone numbers you configure and can make SMS a step in an on-call escalation policy — if a page isn’t acknowledged in time, the next step can escalate to a louder channel. SMS carries a real per-message cost, which is why it sits in the Team-and-above on-call band rather than the free email tier.
Deliver to per-member phone numbers so the right on-call person is paged, not a shared inbox.
Use SMS as an escalation step — a missed chat alert can escalate to a text before it becomes a missed outage.
Reserved for the alerts that truly warrant a phone buzz, because each message has a real cost.
Setup
Set up SMS in three steps
Step 1
On the Team plan or above, add responder phone numbers to your team members.
Step 2
In Merlonix, add an SMS notification channel and run the one-click test.
Step 3
Wire SMS into an on-call rotation or escalation policy so it fires at the step you choose.
What fires an alert
The delivery channel changes; the monitoring doesn’t
Every alert carries the same context regardless of destination: which client asset changed, which check fired (SSL-certificate expiry or change, DNS-record drift, domain registration/expiry, uptime, DNSSEC, security headers, blocklist status, and more), and what specifically changed. Alerts fire on real state changes between definitive checks — not on a transient blip.
- SSL / TLS monitoring
- DNS & DNSSEC monitoring
- Domain-hijack & registrar-lock monitoring
- Security-header monitoring
SMS is one of ten delivery destinations, and Merlonix also runs on-call rotations and escalation policies so the right person is paged. See alerting & on-call →
Other destinations
Prefer a different channel?
Merlonix delivers the same alerts to every destination your team already uses.
Common questions
Frequently asked questions
Which Merlonix plan includes SMS alerts?
SMS alert delivery is available on Team and above (the on-call band). You can start on the free plan and add SMS when you are on the qualifying tier.
What do SMS alerts actually contain?
Every alert carries the same context regardless of destination: which client asset changed, which check fired (SSL-certificate expiry or change, DNS-record drift, domain registration/expiry, uptime, DNSSEC, security headers, blocklist status, and more), and what specifically changed. Alerts fire on real state changes between definitive checks — not on a transient blip. The SMS message carries that same context, so a responder can triage from the alert itself.
Can I use SMS alongside other channels?
Yes. A single asset can send to SMS and other destinations at once — for example email plus a chat channel plus an on-call channel — so no alert rides on one delivery path. Merlonix supports email, Slack, Microsoft Teams, Discord, Telegram, Google Chat, a generic webhook, SMS, PagerDuty, and Opsgenie.
Do I need access to my clients’ servers to monitor them?
No. Merlonix probes each domain from the outside in — its public SSL certificate, DNS records, registration data, and HTTP responses — the same way a browser or resolver would. You add an asset by hostname; the SMS channel just decides where the resulting alert is delivered.
Wire monitoring into SMS today
SSL, DNS, uptime, and vendor-aware alerts across every client asset — delivered where your team already works. Start free, no credit card.