1
Verify Your Number
Add your Signal phone number in E.164 format in AlertsDown contacts. We send a verification code through Signal itself to confirm it's you.
Signal Downtime Alerts for Websites and APIs
Get website down alerts on Signal - the private messenger you already trust. AlertsDown notifies your verified Signal number the moment your website or API goes down, with end-to-end encrypted delivery on every paid plan.
Why Signal for Downtime Alerts?
- Private by design - alerts arrive over Signal's end-to-end encrypted channel
- Websites and APIs - one alert channel for every monitor
- Verified numbers only - alerts go to your confirmed Signal contact
- Real alert data - service name, status, and detection time in UTC
- Works wherever Signal works - no carrier fees or SMS coverage limits
- Every paid plan - included on Indie, Saas, and Founding Builders
How Signal Alerts Work
2
Configure Your Monitors
Add websites and APIs to monitor. Select your verified Signal contact as a notification channel for each monitor.
3
Receive Downtime Alerts
When downtime is detected, AlertsDown dispatches a Signal message to your number. Track current status and recovery in your dashboard.
Signal vs Other Alert Channels
| Channel | Avg time to open | Best for | Cost | Group support |
|---|---|---|---|---|
| Signal | Typically a few minutes | Private, encrypted alerts on the phone you already use | Included on all paid plans | No - verified individual numbers |
| Often 30 minutes or more | Detailed records, archives, and low-urgency updates | Included on every plan | Mailing lists and CC | |
| Chrome extension | Minutes while Chrome is open at your desk | Desktop notifications and a toolbar status badge while you work | Included on every plan, Free Builders included | No - each Chrome browser signed in to your account |
| SMS | Typically a few minutes | Reaching phones without a data connection | Per message on paid plans | No - individual numbers |
| Telegram | Typically a few minutes | Group alerts and international teams | Included on Indie, Saas, and Founding Builders | Yes - group chats |
| Typically a few minutes | Personal downtime alerts on the phone you already check | Included on Saas and Founding Builders, with monthly quotas | No - verified individual numbers |
No single channel wins everywhere. Signal, Telegram, and WhatsApp need an internet connection, SMS works without mobile data, and email remains the dependable archive. Many teams combine two channels, which reduces the chance that a critical outage is missed.
Setting Up Signal Alerts in 5 Minutes
1
Create your account
Sign up for a free AlertsDown account, or log in to your existing dashboard. The free plan is enough to add your first monitor, and you can upgrade to any paid plan to unlock Signal whenever you are ready.
2
Add a monitor
Add the website or API you want to watch. Enter the URL, give the monitor a recognizable name like Checkout API, and choose a check interval. AlertsDown starts measuring uptime as soon as you save.
3
Add your Signal number
Open My Contacts in your dashboard and add the phone number you use for Signal in E.164 format, including the country code. The number becomes a contact you can attach to any monitor once it is verified.
4
Confirm the verification code
AlertsDown sends a verification code to that number through Signal - not by SMS. Enter the code in the dashboard to confirm the number is really yours. Verified contacts stay on your account and can be reused across monitors.
5
Enable alerts and relax
Enable the verified Signal contact on each monitor that should alert you. From then on, when AlertsDown detects downtime, it dispatches a Signal message with the service name, status, and detection time.
Downtime Alerts Without Compromising Privacy
If your team already relies on Signal for sensitive conversations, downtime alerts belong there too. Signal messages are end-to-end encrypted, so the alert path stays private between AlertsDown and your phone - no carrier logs, no plaintext SMS records.
When your checkout goes down at 2 AM, you need to know fast. AlertsDown dispatches a Signal alert as soon as downtime is detected; actual arrival then depends on Signal's network and your phone's connection - no inflated promises, just a channel you already watch.
Who Uses Signal Uptime Alerts?
Privacy-Conscious Teams
Keep incident notifications off carrier SMS logs and ad-funded messengers. Signal alerts arrive end-to-end encrypted, so only you see which service went down and when.
Solo Developers
When you're the only one watching your side project, a Signal alert ensures you never miss a critical outage - even on weekends, even on holiday.
API & SaaS Teams
When an endpoint your customers depend on starts failing, the on-call developer gets a Signal downtime alert with the service name and detection time - enough context to start investigating immediately.
International Businesses
Signal works wherever the app is available, without per-message SMS fees or carrier coverage gaps. Team members can each verify their own number and receive alerts on the same monitors.
Related resources
Explore uptime monitoring use cases for agencies, SaaS, and ecommerce.
Just getting started? Set up website monitoring first, then attach Signal to your monitors.
Need a channel that works without mobile data? Compare with SMS downtime alerts as a fallback.
Prefer a different messenger? See Telegram downtime alerts or WhatsApp downtime alerts.
Working at your desk? Add Chrome extension desktop alerts, included on every plan.
Review plan options and Signal availability on the pricing page.
Monitor Your Website with Signal Alerts
Setup takes about 5 minutes. Create a free account to add your first monitor, then choose any paid plan to get private, encrypted downtime alerts on Signal.
Signal Alerts FAQ
How do I enable Signal notifications?
In your AlertsDown dashboard, go to My Contacts and add your Signal phone number in E.164 format. We'll send a verification code to that number through Signal. Once verified, select the Signal contact as an alert channel for any monitor.
Is Signal alerting available on the free plan?
Signal alerts are available on every paid plan - Indie Builders, Saas Builders, and Founding Builders. Free Builders includes email and Chrome extension alerts.
How is the Signal number verified?
AlertsDown sends a one-time verification code to your number through Signal itself, not by SMS. Enter the code in the dashboard to confirm ownership before the contact can receive alerts.
Can I receive alerts in a Signal group?
Currently, Signal alerts are sent to verified individual numbers, not groups. Each team member can verify their own number and be added to the same monitor. Telegram group alerts are available on Indie, Saas, and Founding Builders.
Are Signal alerts encrypted?
Yes. Signal messages are end-to-end encrypted, so downtime alerts travel privately between AlertsDown and your phone without plaintext carrier records.
What happens if my phone is offline when an alert fires?
Signal typically holds undelivered messages and delivers them when your phone reconnects, subject to Signal's own delivery behavior. If you might be offline during critical outages, pair Signal with SMS, which doesn't require a data connection.
Can multiple team members receive the same Signal alert?
Yes - each team member adds and verifies their own Signal number, and you can enable multiple verified contacts on the same monitor.