SSLCanary monitors SSL certificate and domain expiry for many domains in one list. Free for 5 domains; paid plans from €9/month. See features and pricing.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
SSLCanary is a monitoring service that watches SSL certificate expiry and domain-name registration expiry across all of your domains. It shows every domain in one list and warns you in plain language before either a certificate or a registration lapses.
It is operated by Rapid Ventures OÜ, a company registered in Tallinn, Estonia. The product is deliberately simple, favoring consolidation and reliable, on-time alerts over a long feature list.
How does SSLCanary work?
You add domains by pasting a list, importing a CSV, Excel or OpenDocument file, or pasting a public Google Sheet link. Imports are validated and de-duplicated. SSLCanary then checks each site from its own infrastructure the way a browser would, so nothing is installed on your servers.
Certificate and validity checks run about every 12 hours, and domain-registration checks run daily using RDAP. When something approaches expiry, SSLCanary sends alerts at your chosen lead times, 30, 14, 7 and 1 day by default.
Key features of SSLCanary
Monitoring covers the full certificate chain, so an expiring intermediate is caught. It also flags certificates that are expired, not yet valid, issued for the wrong hostname or untrusted. Statuses are written in plain language, and a site that cannot be checked gets its own notice.
For large lists, SSLCanary offers groups, tags, a sortable dashboard, role-based client access, printable per-client reports and checks from a chosen region. Alerts reach email, Slack, Teams, Discord, Telegram or webhooks, and a weekly digest and full delivery history are included.
Key Features
SSL certificate expiry monitoring — Checks the certificate on each site about every 12 hours and warns you at lead times you choose, 30, 14, 7 and 1 day by default.
Domain-name expiry monitoring — Tracks each domain's registration date with daily checks, using RDAP, and warns you before it lapses.
Full certificate chain checks — Inspects the whole chain so an expiring intermediate certificate is caught, and flags wrong-hostname, untrusted, not-yet-valid and incomplete-chain certificates.
Plain-language status and can't-check notices — Each site shows as secure, expiring, expired or not secure, and unreachable sites get a separate notice rather than a false all-clear.
Multi-channel alerts and weekly digest — Email, Slack, Microsoft Teams, Discord, Telegram or webhook, with configurable lead times, a weekly summary and a full delivery history.
Bulk import — Add domains by paste, CSV, Excel, OpenDocument or a public Google Sheet link, validated and de-duplicated on import.
Groups, tags and one dashboard — Organize domains into folders per client or project, add tags, and sort one dashboard showing every domain and status.
Client access, roles and reports — Owner, Admin, Member and read-only Viewer roles, client access limited to their own group, and printable per-client reports with your name on them.
Regional checks and REST API — Probe a site from a chosen region, and manage domains from your own tools through a REST API on Scale and Business.
Account security and data controls — Sign in with Google, Microsoft or email, optional or enforced two-factor authentication, encrypted alert credentials, and data export or erasure.
Pros & Cons
Pros
Covers both SSL certificate expiry and domain registration expiry in one dashboard
Plain-language statuses and a separate notice when a site cannot be checked
Free for 5 domains with every feature and no card needed
Bulk import from CSV, Excel, OpenDocument or a public Google Sheet
Client roles, groups, tags and printable per-client reports suit agencies
Nothing to install; checks run from SSLCanary's own infrastructure
Cons
Pricing is tied to domain count, so costs rise steadily with large portfolios
The REST API is only on the Scale and Business plans
Focused on expiry monitoring; it is not a broader uptime or performance monitoring suite
Prices are listed in EUR only, and only public endpoints can be checked
Pricing
Free €0 monthly
Solo €9 monthly
Team €29 monthly
Scale €79 monthly
Business €149 monthly
Frequently Asked Questions
What is SSLCanary?
SSLCanary is a monitoring service that watches SSL certificate expiry and domain-name expiry across all your domains. It warns you in plain language before either lapses. It is operated by Rapid Ventures OÜ.
How much does SSLCanary cost?
SSLCanary is free for 5 domains. Paid plans are Solo at €9/month for 25 domains, Team at €29/month for 100, Scale at €79/month for 500 and Business at €149/month for 1000. Yearly billing is available and works out lower per month.
Does SSLCanary have a free plan?
Yes. The free plan covers 5 domains with every feature and requires no card to start. The site does not mention a time-limited trial of paid plans.
What does SSLCanary integrate with?
It sends alerts to email, Slack, Microsoft Teams, Discord, Telegram and webhooks. You can import domains from CSV, Excel, OpenDocument files or a public Google Sheet link. A REST API is available on the Scale and Business plans.
How often does SSLCanary check certificates and domains?
Certificate and validity checks run about every 12 hours, and domain-registration checks run daily, with a little jitter. Alert lead times default to 30, 14, 7 and 1 day and can be customized.
Do I need to install anything?
No. SSLCanary checks your sites from its own infrastructure over the public internet, so there is no software to install on your servers.
What certificate problems does SSLCanary detect?
Beyond expiry, it flags certificates that are expired, not yet valid, issued for the wrong hostname, untrusted or missing part of the chain. These are reported in plain English rather than error codes.
Who is SSLCanary best for?
It is built for people who manage many domains across multiple registrars and hosts, such as agencies, freelancers, small IT teams and portfolio owners. Technical depth is not required.