Fastmask vs ShieldMail
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fastmask
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Fastmask is the companion app for Fastmail users who rely on masked email aliases. Connect your Fastmail account using secure Fastmail login to instantly create, manage, and disable aliases - keeping your real address private, reducing spam, and staying in control of where your messages go. • Secure Fastmail login • Create aliases instantly, including custom email prefixes. • Set local expiration dates for aliases. • Enable or disable aliases anytime to stop unwanted mail. • Bulk actions: manage multiple aliases at once. • Edit existing alias descriptions. • View, search, and open target domains directly from the list. • Tap an alias to quickly copy it—fast and accessible. • Safari Web Extension: Create masked email aliases directly from Safari and send them to the app. • Create aliases via the Shortcuts app for automation and one-tap workflows. • Manage multiple Fastmail accounts in one place with a dedicated sidebar. • Optimized layout for both iPhone and iPad. • Privacy-first design: no trackers, no data sharing, no selling. Upgrade to unlock unlimited aliases, full multi-account support, and all advanced features—seamlessly integrated with Fastmail.
ShieldMail
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ShieldMail is a Safari extension that protects your real email when signing up for websites. * One tap, signup done Tap the shield icon next to the email field on any signup page, and a temporary email address is automatically filled in. No need to expose your real email. * Auto-receive verification codes Automatically detects and displays verification codes sent by websites. Extracts any format — 6-digit numbers, alphanumeric, hyphenated codes, and more. * Auto-open verification links For sites that send verification links instead of codes, the link opens automatically in a new tab. * Complete privacy - Email content is never stored - OTP and links kept in memory for only 10 minutes, then auto-deleted - Temporary email addresses expire after 1 hour - No passwords or personal data collected * Free / Pro plans - Free: 1 temporary email per day - Pro ($0.99/mo): 20 per day + priority support * 6 languages supported 한국어, English, 日本語, 简体中文, Français, हिन्दी Privacy Policy: https://moonkj.github.io/shieldmail/privacy.html Terms of Use: https://moonkj.github.io/shieldmail/terms.html
Screenshots
Verdict
The clearest difference is iOS requirement: ShieldMail at 16.0 against Fastmask's 26.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Fastmask sells 3 one-off in-app purchases and ShieldMail sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Fastmask | ShieldMail |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Vitali Quiering | kyeongju Moon |
In-app purchases
Fastmask
- Multi Account$2.99
- Unlimited Aliases$3.99
- Pro Bundle$6.99
ShieldMail
- ShieldMail Pro$0.991 Month









