All checks, one flat fee.
The StatusCake alternative.
For agencies who want a branded monthly client report with Lighthouse and AI visual regression on every monitored page, StatusCake is uptime-shaped and SiteLetter is the agency-shaped alternative. $5/site flat for up to $15 pages, every feature included.
Also evaluating Oh Dear or UptimeRobot? See those comparisons, or browse all alternatives.
Quick verdict
Both tools are good. The decision comes down to who you are and what you need to deliver.
Mixed-stack ops monitoring with global probes
Teams that monitor a mixed surface area: web uptime plus internal SSH, SMTP, TCP services, plus server-side health (RAM, CPU, disk) via an installed agent, plus public status pages, plus probe regions across 30 countries. StatusCake is built for that mix and SiteLetter is not.
Also a good fit if your monitoring need is uptime-only on many sites: their free tier covers 10 sites, Superior covers 100 at €16.66/mo annual.
Agencies monitoring client sites
Your client deliverable is more than "the homepage was up." It is the Lighthouse trend, the visual diff that catches a contact form being pushed below the fold, the 404'd hero image on the FAQ. SiteLetter monitors all of that across every page on every site without you allocating from four separate monitor pools.
$$5/site covers every monitored page across every service in one flat line. No four-pool math, no Enterprise upsell to unlock Lighthouse you cannot get on Business anyway.
What StatusCake does not ship (that agencies need)
StatusCake covers a wide check-type surface for ops monitoring. The things below are not in the product at any tier. They are built into SiteLetter at every tier because the agency deliverable depends on them.
Lighthouse scoring, not a load-time waterfall
StatusCake's "page speed" monitor reports response time and a resource-load breakdown. It does not produce Google Lighthouse scores - no Performance, Accessibility, SEO, or Best Practices number to put in a monthly client report. SiteLetter runs full Lighthouse audits on every monitored page across every client site, daily, and pre-warms DNS, TLS, and CDN caches before each audit. Without that warmup, the same page swings 15-20 Lighthouse points between consecutive runs - which is what makes uncurated third-party Lighthouse data feel random in a client deliverable.
Day-over-day screenshots and AI-classified diffs
StatusCake covers HTTP, TCP, DNS, SMTP, SSH, PING, PUSH, and a server-side agent. A screenshot of yesterday's page versus today's is not in the catalogue. SiteLetter captures a screenshot of every monitored page every 24 hours and runs an AI classifier across each diff. A rotating hero, a cookie banner, an A/B test variant gets dismissed as cosmetic noise. A genuine content update lands in the next scheduled client report. A broken layout - a deploy hiding the cart icon, a misconfigured CDN dropping product photos, a 404'd stylesheet - is emailed within the hour.
One flat fee, not four monitor pools
StatusCake's commercial pricing is split across four independent budgets: uptime monitors, page-speed monitors, SSL monitors, domain monitors. Each pool has its own cap. The Business tier looks generous with 300 uptime monitors, but page-speed is capped at 30 - enough for exactly one fully-covered 15-page client site. A second client of the same shape and you are negotiating Enterprise. SiteLetter has one pool: the site. $5/site covers up to 15 pages with every monitoring service running daily, no per-pool rationing.
Reports that go beyond uptime summaries
StatusCake's scheduled reports cover uptime percentage, SSL status, domain expiry, and load-time averages. Useful for an ops handover, thinner for what an agency forwards to a client. SiteLetter's reports lead with the Lighthouse trend (with score deltas vs the previous period), then the AI-curated visual changes (cosmetic noise has been filtered out so the section shows what actually matters), then the broken-asset check across every monitored page, then SSL and domain status. Different content, shaped to what a non-technical client wants to read on a Monday morning.
Branded reports, not branded alert emails
StatusCake's white-label feature is alert-email templating: custom subject, sender, and body for downtime notifications. That covers the incident moment, not the monthly report. SiteLetter ships per-client branding on the report itself - logo, brand colour, custom CTA URL, reply-to address on every scheduled send - plus an org-level toggle that strips the SiteLetter brand entirely. New external recipients verify ownership once via a one-click link on first send; team members and returning recipients skip the step.
One URL to seed everything, not four monitors to budget
Adding a client site to StatusCake is four separate decisions, one per pool: which uptime slot does this monitor consume, which page-speed slot, which SSL slot, which domain slot. Then per-monitor alert rules and the contact group. Adding the same client to SiteLetter is pasting one URL. The sitemap is auto-fetched, the 15 most important pages are picked, every monitoring service turns on, alert rules seed themselves (SSL escalation 30/14/7/3/1 days, domain expiry, uptime retry verification, Lighthouse threshold), and the report template is pre-built.
Feature-by-feature comparison
The full picture, grouped by category. Some of these are SiteLetter wins (per-page services, agency-shaped reports). Some are StatusCake wins (multi-region, server monitoring, more check types). The honest answer is "both."
| Feature | SiteLetter | StatusCake |
|---|---|---|
| Pricing model | ||
| Pricing unit | 1 site (up to 15 pages) | Per-monitor in separate pools (uptime, page-speed, SSL, domain) |
| Cheapest commercial-compliant plan | $5/site (15 pages monitored) | €16.66/mo Superior (annual, 100 uptime / 15 page-speed / 50 SSL / 50 domain) |
| Free tier available for client work | 14-day free trial, 1 site | Free plan exists (3 uptime monitors, 15-min intervals, no page-speed / SSL / domain); ToS clause 4.5 says "for your own personal use" |
| Monitoring data retention | 2 years (730 days) uniform across all data types | Tiered: Bronze 90 days overview / 30 days detailed; Silver 1 year / 60 days; Gold 6 years overview / 60 days detailed |
| Per-page services on a client site | ||
| Uptime checking | Homepage every 1 min + 14 subpages every 15 min | Each URL = 1 uptime monitor; 5 min (Free) / 1 min (Superior) / 30 sec (Business) |
| Google Lighthouse audits (Performance / Accessibility / SEO / Best Practices) | Every monitored page, daily, stable scoring | Not offered (page-speed monitor measures load time and resource waterfall only) |
| AI visual regression | Every monitored page, daily, classified | Not offered |
| Broken asset detection | Every monitored page, daily | Not offered |
| Page-speed monitor cap (binding constraint for full coverage) | No separate cap; included per page | 1 (Free) / 15 (Superior) / 30 (Business) / unlimited (Enterprise, custom) |
| Site-level services | ||
| SSL certificate expiry alerts | Yes | Yes (1 monitor per site from a separate SSL pool) |
| Domain expiry alerts | Yes | Yes (1 monitor per site from a separate domain pool) |
| Sitemap auto-discovery | Yes (weekly sync) | No (every URL added manually) |
| Public status page | Post-launch roadmap | Yes (StatusCake Pages) |
| Infrastructure monitoring | ||
| Server monitoring (RAM / CPU / disk) | No | Yes (installed agent on paid plans; max 10 servers on Business) |
| Non-HTTP check types (TCP, DNS, SMTP, SSH, PING, PUSH) | No | Yes |
| Multi-region probes | 3 regions (EU primary + US verifier + AP tiebreaker), all data stored in EU | 43 locations across 30 countries |
| Reports your clients receive | ||
| Scheduled client-facing email report | Yes (weekly, bi-weekly, monthly, quarterly) | Yes (daily, weekly, monthly) - content is uptime / SSL / domain summaries |
| Per-client branding (logo, color, reply-to) on reports | Yes | Limited - email templating is for downtime alerts, not full per-recipient branding on scheduled reports |
| Org-level white-label (hide vendor name) | Yes | Partial (alert email templating documented; no public docs on report-side white-label) |
| Drag-and-drop report builder | Yes | No |
| Recipients view reports without a login | Yes (new external recipients confirm once; team members skip it) | Reports sent as email; deeper detail may require dashboard or public status page |
| Channels and integrations | ||
| Alert channels | Email, Slack | Email, SMS (credit-based), 15+ integrations (Slack, Teams, Discord, PagerDuty, etc.) |
| Public REST API | Post-launch roadmap | Yes |
| Native mobile app | Not in v1 (alerts via email + Slack) | Yes (iOS, Android) |
Sources: statuscake.com/pricing, features, reporting, email-templating, page-speed FAQ, terms and conditions. Verified .
Cost at your portfolio size
Drag the slider to your client portfolio size. Numbers update live.
StatusCake pricing in EUR ex. VAT, annual rate. Sourced from their public pricing page. SiteLetter pricing in USD. Above 30 page-speed monitors StatusCake uses Enterprise (custom pricing).
Reading these numbers honestly
StatusCake wins on cost for homepage-only uptime. The free tier covers up to 10 client sites at €0; Superior at €16.66/mo covers up to 100. SiteLetter is meaningfully more expensive for that use case.
SiteLetter wins on per-page coverage shape. The "matching coverage" column hits StatusCake's 30-monitor page-speed cap at 1 client site - and even on Enterprise, page-speed monitoring is load-time waterfall, not Google Lighthouse with PA/SEO/Best-Practices scoring. Lighthouse audits, AI visual regression, and broken-asset checks are not in StatusCake at any tier.
Cost at common portfolio sizes
"Matching coverage" assumes one uptime + one page-speed monitor per page (the shape required to get StatusCake's per-page visibility). Page-speed cap is the binding constraint above 1 site.
| Client sites | SiteLetter | StatusCake: matching coverage (15 uptime + 15 page-speed/site) | StatusCake: homepage only (1 monitor/site) |
|---|---|---|---|
| 1 | $5/mo | €58.33/mo | €0/mo |
| 5 | $25/mo | Custom | €0/mo |
| 10 | $50/mo | Custom | €0/mo |
| 20 | $100/mo | Custom | €16.66/mo |
Source: statuscake.com/pricing, verified .
Where StatusCake genuinely wins
StatusCake has been around since 2012 and the product depth shows. If you operate the infrastructure your client sites run on, or your monitoring need spans more than HTTP (SSH, SMTP, TCP, DNS, server-side resources), or you require multi-region probes and a public REST API today, StatusCake is the better fit. The wins below are real and SiteLetter does not currently match them.
43 probe locations + 30-second intervals
StatusCake has a mature global probe network with 43 locations and 30-second intervals on Business. SiteLetter runs a 3-region triangulation (EU primary + US verifier + AP tiebreaker, with all data stored in EU) on a flat 1-min cadence. We catch regional outages and suppress false positives, but not at 43-location granularity or sub-minute resolution. If your client base is geographically spread and you need 30-second confirmation in 40+ vantage points, StatusCake is the better fit.
Broader check-type catalogue + server monitoring
HTTP, HEAD, TCP, DNS, SMTP, SSH, PING, PUSH - plus an installed-agent server monitor for RAM / CPU / disk thresholds. If you operate the infrastructure your client sites run on, or need protocol checks beyond HTTP, StatusCake covers those natively. SiteLetter is HTTP-only and external-only.
Maintenance windows + ops ergonomics
Scheduled maintenance windows pause monitoring during planned deploys so you do not get paged for known downtime. SiteLetter does not currently support scheduled maintenance windows; alerts fire regardless of whether you are mid-deploy.
For DevOps teams, infrastructure operators, and any monitoring need that spans more than HTTP plus per-page service depth, StatusCake remains the better tool today. We say that here because we mean it.
When to pick which
Three honest scenarios.
Agencies, any size
From your first client to your fiftieth. Per-page coverage, AI visual regression, branded reports, and the recipient flow are designed for the agency job: making monitoring a deliverable clients can see. SiteLetter is one tool, $5/site, with the full agency feature set built in.
Mixed-stack ops with server health
If your monitoring covers web uptime plus internal SSH bastions, SMTP, TCP services, DNS records, plus server-side RAM/CPU/disk via an installed agent, StatusCake is built for that mix. SiteLetter monitors public-facing pages only.
Many sites, homepage uptime only
If your deliverable starts and ends at "the homepage is up" on many client sites, the StatusCake free tier covers 10 sites at €0 and Superior covers 100 at €16.66/mo. SiteLetter is meaningfully more expensive for that use case.
SiteLetter vs StatusCake: FAQ
No. StatusCake offers "page speed monitoring" but it measures response times and resource-level load breakdown ("calculating the total load time, looking at each individual resource provided by the server"), not Google Lighthouse scores. There is no Performance, Accessibility, SEO, or Best Practices score in the product. SiteLetter runs a full Lighthouse audit on every monitored page daily, with DNS/TLS/CDN cache warmup so scores are stable enough to track week over week and show in client reports.
No. StatusCake does not screenshot pages or detect visual changes. SiteLetter takes a daily screenshot of every monitored page, diffs it against yesterday, and uses AI to classify each diff as noise (rotating banners), intentional updates (logged in the weekly report), or real breakage (missing images, layout collapse, emailed immediately).
Yes, StatusCake has scheduled email reports (daily, weekly, or monthly) that can include client recipients. The difference is what is in the report. StatusCake reports cover uptime, SSL, domain, and load-time data for the monitors you set up. SiteLetter reports cover the agency-deliverable: Lighthouse trends, visual regression diffs (with the AI classification), broken assets, SSL and domain expiry, all per-client branded with your logo, brand colour, custom CTA, reply-to address, and an org-level white-label toggle. Different reports for different audiences.
Probably, with caveats. Clause 4.5 of StatusCake's terms says "The Free Account is for your own personal use and it is a breach of the Agreement to share the login credentials with any third party." That is primarily a credential-sharing prohibition, not a blanket commercial-use ban. An agency monitoring client sites under one login is on reasonable ground, though the "for your own personal use" phrasing is ambiguous enough that any agency taking client work seriously is on safer ground with a paid tier. The bigger practical issue is capacity: the free plan gives 3 uptime monitors with 15-minute test intervals, no page-speed, SSL, domain, or server monitoring. That covers maybe 3 client homepages, with no per-page coverage and no deeper checks.
It depends on what you need monitored. For homepage-only uptime, StatusCake is dramatically cheaper at every portfolio size (Free covers up to 10 sites, Superior at €16.66/mo covers up to 100). For full per-page coverage including page-speed, StatusCake hits its monitor cap at 1-2 client sites on the Business tier (30 page-speed monitors max, 15 needed per site) and requires Enterprise (custom pricing) above that. SiteLetter at $5/site flat covers every monitored page on every client site, every service, daily, with no separate budgets to juggle. The cost calculator on this page lets you check specific portfolio sizes.
A lot. StatusCake monitors from 43 locations across 30+ countries; SiteLetter triangulates from 3 regions (EU primary + US verifier + AP tiebreaker, with all data stored in EU). On the multi-region binary, both tools qualify; on raw vantage-point count, StatusCake wins. StatusCake also supports more uptime check types out of the box (HTTP, HEAD, TCP, DNS, SMTP, SSH, PING, PUSH); SiteLetter is HTTP-only. StatusCake includes server monitoring (RAM, CPU, disk usage thresholds via an installed agent); SiteLetter does not run server-side monitoring at all. StatusCake also ships public status pages, a public REST API, and SMS alerts (with credits); SiteLetter has email and Slack today, with status pages and the API on the post-launch roadmap. If those are part of your buying criteria, StatusCake is the better tool for that job.
Google Lighthouse on every monitored page daily with DNS/TLS/CDN cache warmup (StatusCake measures response times and per-resource load breakdown, not the Lighthouse Performance / Accessibility / SEO / Best Practices four-score breakdown). AI day-over-day visual regression that classifies each diff as noise / intentional / breakage (StatusCake does not screenshot pages or detect visual changes). Branded scheduled per-client email reports with per-client logo, brand color, reply-to, and a one-click confirm flow for new external recipients (StatusCake scheduled reports cover uptime / SSL / domain summaries, not the agency client deliverable). Sitemap auto-discovery: add a domain, SiteLetter picks the 15 most important pages and seeds monitoring rules (StatusCake is per-monitor manual across separate uptime / page-speed / SSL / domain pools). $5/site flat for up to 15 pages, every service, with no separate budgets to juggle.
Yes, and the SiteLetter setup is usually shorter than the original StatusCake one. Each SiteLetter site covers up to 15 pages automatically (sitemap-discovered and ranked by depth, sitemap priority, and recency), so a 100-monitor StatusCake setup typically collapses into 7-10 SiteLetter sites. Add each unique site once and SiteLetter handles the rest: page selection, every monitoring service enabled, smart alert rules seeded (uptime, SSL and domain expiry escalations at 30/14/7/3/1 days, Lighthouse threshold alerts), weekly and monthly client report templates pre-built. The 14-day free trial includes one site so you can validate the full experience on one client site before bringing the rest over.
StatusCake has it via an installed agent on the server, with thresholds configurable per resource. SiteLetter does not monitor the server side at all. We monitor pages externally as a real visitor would, which catches problems your client's customers actually experience. If your agency operates the servers your client sites run on (most agencies do not), or you need internal-resource alerting, StatusCake is the right tool for that layer. The two products are not exclusive: some agencies run StatusCake for server health and SiteLetter for the client-facing deliverable.
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Comparison based on publicly available StatusCake pricing, terms, and feature documentation, last verified . StatusCake is a trademark of its respective owner, used here for identification and comparison purposes only. SiteLetter is independent and not affiliated with, sponsored by, or endorsed by StatusCake. For the most current StatusCake pricing and feature information, see statuscake.com.
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- ✓ 2-minute setup. Add a URL. We auto-discover pages, seed alerts, schedule reports.
- ✓ No scripts to install. We monitor from the outside, like a real visitor.
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