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MailWasher

Christchurch, New Zealand

What it is

MailWasher previews email on the mail server so you can remove unwanted messages before they reach your computer. MailWasher Free works with one email account; Pro supports unlimited accounts and POP3 and IMAP. The filtering toolkit includes Friends List, Blacklist, RBLs, custom and learning filters, a profanity list, and spam ratings. Firetrust lists services including Gmail, Outlook.com, Yahoo, AOL, and Hotmail, plus programs such as Outlook, eM Client, and Thunderbird. The maker says email content stays on your PC and only the license key is sent to its servers. For services such as Gmail and Outlook.com, MailWasher uses OAuth or app passwords instead of requiring your actual email password in the app. Mobile apps are available for iPhone, iPad, and Android. The free plan has no support; the paid Pro license includes customer support. Pro has a 30-day full-function trial. Listed options include $49.95 per year, $77.21 per year, $99.90 per year, and $149.95 once for a lifetime license; annual plans renew thereafter at $34.95 per year.

For and against

For

  • Preview and delete messages before downloading.
  • Free plan supports one email account.
  • Pro supports POP3 and IMAP accounts.
  • Mobile apps available for iPhone, iPad, and Android.
  • 30-day Pro trial includes full functionality.

Against

  • Free plan is limited to one account.
  • Free plan includes no support.
  • Pro annual plans renew thereafter at $34.95 per year.

The verdict

MailWasher focuses on screening email before it reaches your computer, with a free single-account option and broader account support in Pro. Consider the plan limits and renewal terms if you need multiple accounts or ongoing support.

Who it suits

MailWasher suits people who want to review and filter messages before downloading them, including those using supported email services or programs. Its free plan is limited to one email account, while Pro supports unlimited accounts.

Plans and prices

MailWasher Free

Free

1 email account · no support

MailWasher Pro 1 year

See the maker's page

3 computers · unlimited email accounts · 1 year updates

MailWasher Pro 2 year

See the maker's page

3 computers · unlimited email accounts · 2 years updates

MailWasher Pro 3 year

See the maker's page

3 computers · unlimited email accounts · 3 years updates

MailWasher Pro Lifetime

$149.95one-time

3 computers · unlimited email accounts · all future versions and updates

MailWasher Enterprise Server 10 Users

$199.95a year

10 users · unlimited aliases · unlimited domains · future updates during license

MailWasher Enterprise Server Unlimited Users

$499a year

unlimited users · unlimited aliases · unlimited domains · future updates during license

MailWasher Pro — 1 year

See the maker's page

Use on 3 computers

MailWasher Pro — 2 year

See the maker's page

Use on 3 computers · 2 years of updates

Every plan, in full

On the record

Account limit
MailWasher Free works with one email account, while Pro supports unlimited email accounts.firetrust.com · read 2 Oct 2026
API and SDKs
The official documentation describes account protocols and an internal mobile API access fix, but it does not present a public developer API or SDK.apps.apple.com · read 14 Oct 2026
Company history
Firetrust was founded by Nick Bolton in 2000 and released MailWasher in 2001.firetrust.com · read 14 Oct 2026
Company location
Firetrust Limited is headquartered in Christchurch, New Zealand.firetrust.com · read 14 Oct 2026
Documentation and support
Documentation includes an in-product help file, tutorials, an online forum and direct email support.firetrust.com · read 14 Oct 2026
Email protocols
MailWasher Pro supports POP3 and IMAP accounts.firetrust.com · read 2 Oct 2026
Email services and apps
The maker lists Gmail, Outlook.com, Yahoo, AOL and Hotmail, and says MailWasher works with email programs including Outlook, eM Client and Thunderbird.firetrust.com · read 2 Oct 2026
Enterprise deployment limit
Enterprise Server is intended for server deployments and is not supported on Windows XP through Windows 11.firetrust.com · read 14 Oct 2026
Enterprise server
MailWasher Enterprise Server provides real-time blocking, Bayesian learning, greylisting and quarantine or pass-through handling.firetrust.com · read 14 Oct 2026
Filtering
Filtering tools include Friends List, Blacklist, RBLs, custom filters, learning filters, profanity list and spam ratings.firetrust.com · read 2 Oct 2026
Implementation
The interface uses .NET 4 and Windows Presentation Foundation while the processing engine is written in C++.firetrust.com · read 14 Oct 2026
International sales
Firetrust says 99% of its software is exported, with the United States, United Kingdom and Australia as main markets.firetrust.com · read 14 Oct 2026
Latest release
MailWasher Pro 8.5.1 was released in August 2026 with crash, category, Gmail OAuth, filter and wash-mail fixes.firetrust.com · read 14 Oct 2026
Limit: Android login errors
A Google Play reviewer reports repeated password and Gmail configuration errors despite checking the credentials.play.google.com · read 14 Oct 2026
Limit: crashes
Multiple G2 reviews report shutdowns or crashes and difficulty diagnosing some errors.g2.com · read 14 Oct 2026
Limit: dated interface
A G2 reviewer requests an interface refresh.g2.com · read 14 Oct 2026
Limit: expensive Pro
A G2 reviewer describes the Pro edition as expensive and says Windows has more integration capability than other operating systems.g2.com · read 14 Oct 2026
Limit: filtering misses
G2 reviewers report that some promotional or unwanted messages still pass through the filters.g2.com · read 14 Oct 2026

The review

MailWasher is a mailbox-screening app that lets you review email on the server and remove unwanted messages before they reach your computer. It suits people who want a pre-download filter alongside a regular email program. Its free tier is tightly limited to one account, while Pro adds unlimited accounts and paid support.

Overview

MailWasher is a screening step, not an email service or a replacement for Outlook, eM Client or Thunderbird. It works with services including Gmail, Outlook.com, Yahoo, AOL and Hotmail, and its supported platforms also include Microsoft 365. Pro supports POP3 and IMAP accounts. That breadth makes it relevant to people managing different kinds of mail accounts, but the free edition is a single-account choice.

MailWasher Mobile is available for iPhone and iPad through the Apple App Store and for Android through Google Play. Firetrust is based in Christchurch, New Zealand.

Key features

Screen mail before download

You can preview messages while they remain on the mail server and delete unwanted ones before downloading them to your computer. This is useful if you want to screen incoming mail before opening it in a desktop program. There is no quarantine access, however, so MailWasher does not offer a separate place to review messages after they have been set aside.

Multiple filtering controls

Filtering options include Friends List, Blacklist, RBLs, custom and learning filters, a profanity list and spam ratings. The range offers several ways to assess unwanted mail; it is a better fit for users who want filtering controls than for someone seeking only a simple holding area.

Privacy and login security

Firetrust says email content stays on the PC and that only the license key is transmitted to its servers. For services such as Gmail and Outlook.com, MailWasher uses OAuth or app passwords, so you do not have to enter your actual email password in the app. The maker also lists phishing detection and malware scanning.

Pricing

MailWasher Free costs nothing and supports one email account, with no support. It is the sensible way to try the screening approach or manage a single account, but not for anyone who needs multiple accounts or customer assistance.

MailWasher Pro offers a 30-day free trial with full functionality. Paid Pro licenses include customer support, which Firetrust provides by email. The listed plans are:

  • Pro — 1 year: $49.95 a year, billed Thereafter $34.95 per year; use on 3 computers.
  • Pro — 2 year: $77.21 a year, billed Thereafter $34.95 per year; use on 3 computers and includes 2 years of updates.
  • Pro — 3 year: $99.90 a year, billed Thereafter $34.95 per year; use on 3 computers and includes 3 years of updates.
  • Pro — Lifetime: $149.95, paid once; use on 3 computers and includes all future version updates.

Every Pro plan supports unlimited email accounts, so it is the practical upgrade for people screening several mailboxes. The one-year option has the lowest listed upfront price, but renews at $34.95 per year. The longer plans cost more initially and add two or three years of updates; their listed renewal is also $34.95 per year. Lifetime costs more upfront but avoids that annual renewal and includes future version updates. Firetrust offers a 30-day money-back guarantee for purchases.

Platforms

The listed platforms are Android, iOS and Windows. The Windows download page lists Pro version 8.5.1 for Windows 7, 8, 10 and 11, and Vista. Mobile apps are available for iPhone, iPad and Android devices.

Who it's for

MailWasher is best suited to people who want to inspect and remove unwanted mail before it reaches a computer-based email program, especially those with multiple accounts who can use Pro's unlimited-account support. Free is a reasonable fit for a single mailbox. It is less suitable if you need a quarantine area or want a free plan that covers multiple accounts.

Pros and cons

  • Pro screens mail before download: you can delete unwanted messages while they remain on the mail server.
  • Broad account and client compatibility: it supports major mail services, POP3 and IMAP in Pro, and works with familiar email programs.
  • Free covers only one account: managing multiple mailboxes requires a Pro license.
  • Renewal matters: the annual Pro plans renew at $34.95 per year, so compare that ongoing cost with the lifetime option.
  • No quarantine access: users looking for a separate review area for held messages will need another approach.

Alternatives

Email Anti-Spam Software is a useful starting point if you want to compare more tools in the category.

Choose JetEmail instead if you want a web-based email marketing service with a free tier for up to 1,000 subscribers and 1 GB of image storage, rather than screening incoming mailbox messages.

Mailprotector is another option, with a free email security check and paid products priced through an account manager.

Mimecast Data Leak Prevention is a web-based paid option with custom pricing for its Advanced plan, which adds data protection.

Cleanmail is a paid alternative with a free trial and self-hosted and web platforms.

Retarus Transactional Email may suit transactional email use: its free trial runs for 30 days and is capped at 5,000 emails and 200 emails per hour, with no load testing.

Mailinblack Protect is a paid alternative available through API, self-hosted and web deployments; its Protect Advanced plan combines multi-engine and AI protection with inbound and outbound coverage and management controls.

MX Guarddog is a freemium web option that charges $0.25 per email address per month, with no limits on addresses or messages and no charge for aliases.

Proxmox Backup Server is a freemium Linux and web option for backup needs rather than email screening.

Verdict

Choose MailWasher if you want to screen mail on the server and remove unwanted messages before downloading them, particularly across multiple accounts in Pro. The main trade-offs are the free plan's one-account cap, annual renewal costs and lack of quarantine access; look elsewhere if you need a separate message-holding area or broader free account support.

Alternatives to MailWasher

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