AI-assisted · Human-reviewed

Website & email security,
explained in plain English.

We continuously check your website, domain and email settings for the misconfigurations attackers love — then tell you exactly what to fix first. Built for small businesses without an IT team.

  • No software to install
  • No passwords required
  • Cancel anytime
app.plainshield — Overview

Security score

78

+12 this month

Open findings

6

2 need attention

Next scan

Mon

weekly · 3 assets

high

No DMARC record

acme-bakery.com

medium

HSTS header missing

shop.acme-bakery.com

medium

TLS certificate expires in 21 days

acme-bakery.com

low

Server version disclosed

shop.acme-bakery.com

Plain-English summary: Someone could send emails pretending to be you. Adding a DMARC record (a 5-minute DNS change) is the top priority this month.

Email impersonation

is one of the most common ways small businesses get defrauded — and SPF/DMARC are free to set up.

Expired certificates

make browsers show full-page warnings. Customers leave before they ever see your site.

Small configuration gaps

are what automated attackers scan the internet for, every day.

How it works

Set up in 10 minutes. Safe by design.

1

Add your website or domain

Tell us what to watch. No software to install, no passwords needed.

2

Prove you own it

Add a DNS record or upload a small file, then sign a short scan authorization.

3

We check it on a schedule

Safe, passive checks of certificates, security headers and email settings.

4

A human reviews, you get answers

AI drafts a plain-language report; an analyst confirms anything serious before you see it.

Features

Everything a small business needs. Nothing it doesn't.

Real scanners collect the evidence. AI makes it readable. People make sure it's right.

Certificate & HTTPS monitoring

Expiry warnings at 30 and 7 days, chain problems, outdated TLS versions, missing HTTPS redirects.

Email spoofing protection

SPF, DMARC and DKIM checks so criminals can't easily send invoices that look like they came from you.

Security header analysis

HSTS, CSP, clickjacking, cookie flags and more — explained, with copy-paste fixes.

AI-assisted, evidence-backed reports

Every statement ties to real scanner evidence. No invented CVEs, no scare tactics.

Human review

High-severity and uncertain findings are reviewed by a person before you're alerted.

Change alerts

Get an email when something new and important appears — not a weekly wall of noise.

Branded monthly PDF reports

Scope, findings, progress since last month, methodology and limitations. Board-ready.

Step-by-step fix guides

Every finding explains exactly what to change, with copy-paste settings you or your web developer can apply.

No surprises

What we do — and what we don't.

Security vendors love to over-promise. We'd rather be clear, so you can make good decisions.

We do

  • • Scheduled passive configuration checks
  • • Plain-language reports & priorities
  • • Human review of serious findings
  • • Alerts when important things change
  • • Step-by-step fix instructions

We don't

  • • Promise you're “100% secure”
  • • Offer 24/7 incident response
  • • Scan anything without permission
  • • Ask for your admin passwords
  • • Let AI change your systems

Can someone send email pretending to be you?

Check your domain's SPF, DMARC and DKIM in seconds. Free, no sign-up — we only read public DNS records.

Pricing

Simple monthly plans

Introductory pricing. Every plan starts with a 14-day free trial — no card required. Only need email protection? Start at $39/month.

Email Protection

Stop criminals sending email as you.

$39/month

Start 14-day free trial
  • Up to 2 email domains
  • Weekly SPF, DMARC & DKIM checks
  • DNS health checks
  • Alerts when records break or change
  • Monthly plain-English report
  • Business-hours email support
  • Website & certificate checks

Basic Monitoring

Know when something changes.

$99/month

Start 14-day free trial
  • Up to 3 websites/domains
  • Weekly passive checks
  • TLS certificate expiry alerts
  • SPF, DMARC & DKIM monitoring
  • Monthly human-reviewed report
  • Email alerts on significant changes
  • Business-hours email support
  • Weekly analyst review
  • Monthly consultation
Most popular

Business Security

Guidance and tracking until it's fixed.

$249/month

Start 14-day free trial
  • Up to 10 websites/domains
  • Daily passive checks
  • Everything in Basic
  • Weekly analyst review of findings
  • Fix guidance & progress tracking
  • 30-min monthly consultation

Need a one-time look? A standalone security assessment starts at $199–$399 depending on scope. Ask us.

Frequently asked questions

No. Our plans run passive configuration checks — the kind of requests any browser or mail server makes. They catch common, high-impact misconfigurations, but a clean result does not prove your site is secure. If you need a penetration test, we'll tell you honestly and point you to a specialist.

Not sure where to start?

Tell us about your business and we'll send a free sample report based on your public email records, plus a 15-minute call if you'd like one.

  • Answer within one business day
  • No pushy sales
  • Real person, not a bot

We won't scan your site without your written permission. A sample report uses only public DNS information until you authorize more.