Inbox Shield vs MailShield: Fake Email Blocker
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Inbox Shield, Oct 21, 2026 for MailShield.
The short answer
- Both list a free plan. Paid plans start at $4.99/month for Inbox Shield and $9.99/month for MailShield.
- Inbox Shield lists 7 features MailShield’s listing doesn’t mention, including Blocklists, Bot detection, Bots.
Head to head
Basic
- · Block bots and phishing attempts
- · Message log with spam scores
- · Protect 50 messages/month
- · Spam protection on contact forms
Premium
- · Custom keyword filters
- · Everything in Free
- · Unlimited protected messages
- · Whitelist trusted senders
Free
- · 1 custom blocked domain
- · Blocks common disposable domains
- · Catches typos like gmial.com
- · Up to 100 orders a month
- · Works on every Shopify plan
Pro
- · Email, webhook and Flow alerts
- · Every order tagged and scored
- · Filter or automate on the tags
- · No order limit
- · Scans orders vs 120,000+ domains
- · Up to 50 custom blocked domains
Advanced
- · DNS/MX scan, catches dead domains
- · Everything in Pro
- · Full risk log and dashboard
- · Unlimited custom blocked domains
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureInboxShield protects your contact form from unwanted messages, fake inquiries, and repeated promotional submissions. You can review message activity, adjust protection settings, manage keyword categories, and keep real customer inquiries easier to notice.
Most bad checkout emails are not fraud, they are mistakes. A shopper mistypes their address, the order goes through, and the confirmation and tracking never arrive. MailShield catches the typo at checkout and suggests the right domain so they can fix it. It also refuses disposable and temp-mail domains, plus any domain on your own blocklist, before the order is created.
- Protect your contact form from unwanted messages
- Review blocked and allowed messages in one dashboard
- Adjust protection levels to control message filtering
- Customize keyword filters to match your business needs
- Block disposable and temporary email domains at checkout
- Catch common email typos and suggest the correct domain
- Enforce your own custom list of blocked email domains
- Auto-tag and add risk notes to suspicious orders after checkout
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Inbox Shield |  MailShield |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Inbox Shield | MailShield |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Inbox Shield | MailShield |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $4.99/month(ahead) | $9.99/month |
| Longest free trial | 7 days | 7 days |
| Plans listed | 2 | 3 |
Listing
| Measure | Inbox Shield | MailShield |
|---|---|---|
| Shopify category rank | #153 | #65(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 30, 2026 | May 24, 2026 |
| Languages | 1 | 1 |
| Developer | Acrosoft | Stackedboost |
FAQ
Inbox Shield and MailShield: common questions
- Is Inbox Shield or MailShield cheaper?
- Both list a free plan. Paid plans start at $4.99/month for Inbox Shield and $9.99/month for MailShield. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Inbox Shield lists 7 the others don’t mention, such as Blocklists, Bot detection, Bots, Custom rules. MailShield lists 5 the others don’t mention, such as Chargebacks, Fake accounts, High-risk alerts, Order validation. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for Inbox Shield, Oct 21, 2026 for MailShield; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for Inbox Shield, Oct 21, 2026 for MailShield. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.