site1.erralert.com
What is site1.erralert.com?
A monitoring & alerting service for the things you run. You tell it what to watch — websites, domains, servers, scripts — and how you want to be notified when something breaks or is about to. It then watches on a schedule you control and pings you only when it matters.
What can it watch?
- URLs — HTTP status, response time, body contents (e.g. “is my homepage returning 200 in under a second and showing the right text?”)
- Domains — DNS records (A / AAAA / MX / NS / TXT / CNAME / CAA), domain registration expiry (WHOIS / RDAP), SSL certificate expiry, DNS consistency across resolvers
- IPs / hosts — TCP port reachability, ICMP ping
- Capture endpoints — you POST any JSON from your own scripts (heartbeats, disk free, backup age, service status, anything) and we alert on staleness or threshold breaches. Example scripts for Windows / Linux.
How does it tell you?
Per-user notification channels: email, Telegram
(with two-way /status, /check, /history commands and tap-to-run buttons),
Slack, Discord, or a generic signed
webhook — all available on the free tier.
SMS is also supported, but only on paid plans because each text costs us money to send.
Route different severities to different channels, set quiet hours, mute individual checks,
and acknowledge incidents from your inbox.
Multi-user from day one
Objects can be shared with other accounts (read / write / admin), so a team can monitor the same infrastructure together. Per-user mutes and personal channels keep your notifications under your own control.
Questions or issues during beta? Reach the operator at support@tech208.biz.