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 listed on StatusCake's published feature pages as of August 21, 2026. 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 over every diff big enough to matter, so rendering jitter never reaches the model. 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 caught on the next daily scan and emailed to you.
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 two fully-covered 15-page client sites. A third 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 service included: uptime from 1 minute, Lighthouse, screenshots, SSL, domain and broken-asset checks daily, sitemap re-sync weekly, 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 page scores (with deltas vs the previous period), then uptime, then the AI-curated visual changes (cosmetic noise has been filtered out so the section shows what actually matters), then SSL and domain status, then the broken-asset check across every monitored page, and you can reorder any of it in the report builder. Different content, shaped to what a non-technical client wants to read on a Monday morning.
Branding per client, not per account
StatusCake publishes both: alert-email templating (custom subject, sender and body for downtime notifications) and "Unbranded Reporting", which their pricing page describes as "You won't have StatusCake branding on your reports" (checked August 21, 2026). What is not published is branding applied per client rather than per account. SiteLetter sets logo, brand colour and reply-to address on each client's report, so ten clients get ten differently branded sends from one account, plus an org-level toggle that removes SiteLetter branding from the report body and the sender display name (the From address stays support@siteletter.com).
One URL to start 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, and the report template is pre-built. The alert rules and the addresses they go to are agency-level: set once, inherited by every client and every site, including the ones you add later.
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 paid 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 (10 uptime monitors, 5-min intervals, 1 page-speed / 1 SSL / 1 domain monitor); their terms clause 4.5 asks that free-account login credentials not be shared with third parties (checked August 21, 2026), which is a credential-sharing rule rather than a blanket commercial-use ban |
| Monitoring data retention | 2 years (730 days) for Lighthouse, screenshot, broken-asset and report history; raw uptime check samples roll off after 7 days | Tiered, from 90 days overview and 30 days detailed at the lowest rung up to 6 years overview and 60 days detailed at the highest. Their retention documentation names those rungs Bronze / Silver / Gold, which is not the Free / Superior / Business ladder priced elsewhere on this page, so treat the mapping between the two as unconfirmed |
| 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), monitoring data stored in the EU; screenshots go to OpenAI in the US under SCCs | 43 locations across 30 countries |
| Reports your clients read | ||
| 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 - branding is set on the account, not per client; no published per-recipient logo or reply-to on scheduled reports |
| Remove vendor branding from the report | Yes on report body + sender display name (emails still send from an @siteletter.com address) | Yes - their pricing page lists "Unbranded Reporting" and "White Label Reporting" (checked August 21, 2026) |
| Drag-and-drop report builder | Yes | No |
| Recipients view reports without a login | Yes (a branded email you forward; no account for the recipient) | 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 2 client sites, and StatusCake's published page-speed monitor measures load time and a resource waterfall, not Lighthouse scoring (their features and pricing pages as of August 21, 2026). Lighthouse audits, AI visual regression, and broken-asset checks are not listed on StatusCake's published feature pages as of August 21, 2026.
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 2 sites.
| Client sites | SiteLetter | StatusCake: matching coverage (15 uptime + 15 page-speed/site) | StatusCake: homepage only (1 monitor/site) |
|---|---|---|---|
| 1 | $5/mo | €16.66/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 need probe coverage well beyond three regions 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), checking the homepage every minute and the remaining monitored pages every 15. Monitoring data is stored in the EU: the US and AP probes only return an up/down result. Screenshots go to OpenAI in the US for visual change classification, under EU Standard Contractual Clauses. SiteLetter catches regional outages and suppresses 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 checks uptime over HTTP only, and monitors everything from the outside - no installed agent, no server-side probes.
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. I say that because I 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, flagged as breakage and alerted on the next daily scan).
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, reply-to address, and an agency-branding 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 10 uptime monitors at 5-minute intervals plus 1 page-speed, 1 SSL and 1 domain monitor for the whole account, as published on statuscake.com/pricing on August 16, 2026. That covers 10 client homepages, but only one page anywhere in your portfolio gets page-speed, SSL or domain checks, and there is no per-page coverage beyond that.
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, monitoring data stored in the EU; screenshots go to OpenAI in the US under SCCs). 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 big enough to matter 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 (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 every monitoring service turns on for them (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, whether the homepage links to them, sitemap priority, and recency), so a 100-monitor StatusCake setup typically collapses into 7-10 SiteLetter sites. That figure assumes those monitors are extra pages of domains you already cover: the collapse is per domain, not per monitor. A hundred monitors sitting on a hundred separate client homepages stays a hundred SiteLetter sites. Add each unique site once and SiteLetter handles the rest: page selection, every monitoring service enabled, weekly and monthly client report templates pre-built. Alert rules live at agency level: set your uptime, SSL and domain expiry, Lighthouse, visual-change, and broken-asset thresholds once, and every site inherits them without a per-monitor pass. 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. SiteLetter monitors 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.
Still have questions? Contact us
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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SiteLetter is the kind of tool you forget you're using, until your client thanks you for the report you didn't write.
- ✓ 2-minute setup. Add a URL. SiteLetter auto-discovers pages, starts monitoring, schedules reports. You pick your alert rules and confirm each client address once.
- ✓ No scripts to install. SiteLetter monitors from the outside, like a real visitor.
- ✓ Cancel anytime. No credit card to start, no contract.