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MailFleet

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Download MailFleet for Windows, macOS, and Linux

Download MailFleet — professional desktop email campaign software for Windows, macOS, and Linux. Signed installers for x64 and ARM64, plus a universal Mac DMG. Install in minutes and manage permission-based campaigns from your desktop.

Buy Lifetime — $79Buy 1 Year — $49Compare licensesGetting started guideAll installer filesSee features

Official installers

Download MailFleet for your operating system

Pick the installer that matches your OS and processor. Purchase a 1 Year license ($49) or Lifetime license ($79), then download, install, activate, and connect your SMTP or API providers.

File directory: mailfleet.app/assets/download/

Signed installers for Windows, macOS, and Linux

DEB and RPM packages for x86_64 and ARM64 on Linux

Universal Mac DMG and PKG for Apple Silicon and Intel

License required before activation — purchase at pay.mailfleet.app

SHA-256 checksums published with releases when available

At a glance

What it is
MailFleet is desktop email campaign software — templates, provider profiles, SpamAssassin checks, webhooks, and detailed campaign logs on your machine.
Who it is for
Teams and operators who want local control over permission-based email campaigns without per-email SaaS fees.
Main capabilities
Campaign management, SMTP/API providers, DNS and content checks, sending capacity controls, webhooks (both licenses), and local log export.
Platforms
Windows 10+ (x86_64, ARM64), macOS 12+ (universal DMG/PKG), Linux DEB & RPM (x86_64, ARM64).
Responsible use
Permission-based lists only. MailFleet does not provide SMTP servers or guarantee inbox placement.

How to download and install MailFleet

From license purchase to your first validated send — five steps. Most users complete download and install in under ten minutes.

  1. Step 01

    Purchase a license

    Buy a 1 Year ($49/year) or Lifetime ($79) license at pay.mailfleet.app, then download the installer for your OS.

  2. Step 02

    Download the right installer

    Windows: x86_64 or ARM64 EXE. macOS: universal DMG or PKG. Linux: DEB (Debian/Ubuntu) or RPM (Fedora/RHEL), each in x86_64 or ARM64.

  3. Step 03

    Install and activate

    Run the installer, enter your license key on first launch, and validate your activation online.

  4. Step 04

    Connect providers

    Add SMTP or API profiles, run connectivity tests, and configure approved sending profiles.

  5. Step 05

    Send with full logs

    Prepare templates, run pre-send checks, launch permission-based campaigns, and review campaign logs.

System requirements and download files

All installers are hosted at mailfleet.app/assets/download/. Internet access is required for license validation, provider connectivity, and updates.

Windows downloads

  • MailFleet-x86_64-setup.exe — standard 64-bit PCs (~80% of users)
  • MailFleet-arm64-setup.exe — ARM Windows laptops and desktops (Surface Pro X, Snapdragon)
  • Windows 10 or later · 1 GB RAM minimum
Windows install docs →

macOS download

  • MailFleet-1.0.0-universal.dmg — universal drag-and-drop install for Apple Silicon and Intel
  • MailFleet-1.0.0-universal.pkg — universal installer with setup wizard
  • macOS 12 Monterey or later
  • Both files are processor-independent universal Mac builds
macOS install docs →

Linux downloads

  • mailfleet_1.0.0_x86_64.deb — Debian/Ubuntu, 64-bit (most common)
  • mailfleet_1.0.0_arm64.deb — Debian/Ubuntu, ARM64
  • mailfleet-1.0.0-x86_64.rpm — Fedora/RHEL/CentOS, 64-bit
  • mailfleet-1.0.0-arm64.rpm — Fedora/RHEL/CentOS, ARM64
  • Outbound SMTP ports must be allowed by your firewall
Linux install docs →

Key takeaways

  • Download MailFleet only from mailfleet.app/download or the official assets folder.
  • Windows and Linux require picking x86_64 vs ARM64; Linux also requires DEB vs RPM by distro family. macOS uses universal DMG or PKG.
  • A license is required before activation — no subscription tiers beyond 1 Year and Lifetime.
  • MailFleet connects to your SMTP/API providers; it does not include sending servers.
  • 14-day money-back guarantee on new licenses when stated at checkout (see Terms)
  • Signed installers · SHA-256 checksums published with releases when available
  • Need help choosing an installer? Contact support from the contact page.

Delivery note: MailFleet helps users manage campaigns through their own sending providers. Delivery outcomes depend on sender reputation, DNS authentication, content quality, recipient engagement, list quality, provider rules, and mailbox filtering systems.

MailFleet is built for permission-based email campaigns. Read our Anti-Spam Policy and Acceptable Use Policy before sending. Compare plans on pricing or explore free email tools for DNS and deliverability checks.

Download MailFleet — frequently asked questions

MailFleet supports Windows 10 or later (x86_64 and ARM64), macOS 12 or later (Apple Silicon and Intel via universal DMG or PKG), and Linux on Debian/Ubuntu (DEB) and Fedora/RHEL/CentOS (RPM) in x86_64 and ARM64 builds.

Get started

Need enterprise deployment?

Contact us for multi-seat licensing, security review, MDM deployment, and rollout planning.

Download MailFleetTalk to sales

Available on

  • Windows 10+
  • macOS 12+
  • Linux (DEB & RPM)

Same desktop experience across every platform — one workflow for your entire team.