Pay once. Run campaigns without recurring MailFleet software fees.
MailFleet Get 366-Day Access — $49

Professional Desktop Email Campaign Software

Run email campaigns from your own SMTP or API providers — without paying software fees per email.

MailFleet is a professional desktop application for Windows, macOS, and Linux. Connect your own SMTP or API providers, prepare permission-based campaigns, run pre-send checks, and keep detailed campaign data on your device.

Get 366-Day Access — $49 Watch the Demo

One payment · One active device · 366 days of access · 14-day money-back guarantee

Runs natively on

Windows

Windows 10 or later · 64-bit

macOS

macOS 12 or later · Apple Silicon & Intel

Linux

DEB / RPM · 64-bit

Download

  • One-time $49 payment
  • Windows, macOS & Linux
  • Your own SMTP / API providers
  • Encrypted local campaign data
  • Signed / notarized installers

Email campaign operations become expensive and fragmented too quickly.

Campaign operators often manage templates in one tool, providers in another, DNS checks in separate websites, and logs inside multiple provider dashboards. Every new contact, user, or sending-volume increase can also increase recurring platform costs.

Fragmented campaign control

Campaigns, providers, templates, reports, and diagnostics are spread across multiple systems.

Recurring platform fees

Many tools charge by contact count, seat, mailbox, or sending volume.

Limited provider visibility

Browser platforms can hide provider responses, limits, and granular delivery events.

Data stored in another cloud

Contact lists, templates, and campaign history may be stored in vendor infrastructure.

MailFleet is designed for operators who prefer a different operating model — not a claim that every cloud platform is wrong.

One desktop control center for the campaign workflow.

Control your sending providers

Connect multiple SMTP or API profiles, test them, and assign providers to campaigns.

Detect problems before launch

Run content checks, provider diagnostics, DNS tools, and capacity scoring before sending.

Keep operational visibility

Review provider responses, per-recipient events, and detailed local logs.

Stop paying software fees per send

Pay MailFleet once while continuing to use the sending providers that fit your business.

The complete feature list

16 features. One $49 payment. No monthly bill.

MailFleet is email campaign software you install on your own computer. It runs on Windows, macOS, and Linux. You connect your own SMTP server or email provider, and MailFleet sends your campaigns through it.

Every feature below is included in the $49. There are no paid add-ons, no extra charge per user, and no bigger plan you have to buy later.

Works on all three

Windows, macOS, and Linux. One license.

MailFleet is the same application on all three systems. Same features, same screens, same license. Most desktop email software is Windows-only — if you work on a Mac or run Linux, you usually get left out. You are not left out here.

Windows

Windows 10 or later

64-bit · signed installer

macOS

macOS 12 or later

Apple Silicon & Intel · notarized

Linux

DEB and RPM packages

64-bit · checksums published

Your license is not tied to one system. Move from Windows to a Mac and your license moves with you. It counts as changing computers, so the one-active-device limit applies — support will help you move it.

All three included. Forever.

Live Dashboard

See what your campaign is doing right now.

The dashboard updates while your campaign is sending. You can see how many emails have gone out, how many bounced, and how each of your sending servers is doing.

If something looks wrong, you can stop the campaign and fix it — instead of finding out the next morning.

Emails sent
Updates live
Bounce rate
Per campaign
Complaints
Per server

Included. Forever.

The real dashboard. Sent today, bounce rate, what needs attention, and every campaign currently running.

Campaign Management

Run as many campaigns as you want.

Build a campaign, copy last month's and reuse it, pause one while it is sending, start it again, or cancel it. Find any campaign later by name or status.

MailFleet does not count your campaigns, because MailFleet does not charge for them.

  • Create and copy campaigns
  • Pause and restart any time
  • Draft, scheduled and sent views
  • Search and filter your list
  • Pick a sending server per campaign
  • No charge per campaign

Included. Forever.

Every campaign in one list — scheduled, paused, completed, failed — with progress and counts on each row.

Email Scheduling

Pick a time. MailFleet sends it for you.

Choose the day, the start time, and how fast to send. Setting a gap between emails keeps you inside your provider's hourly limit instead of going over it.

MailFleet also warns you before you start if your campaign is too big to finish in the time you gave it.

Queue
Set the gap
Check limits
Send
Pick your interval and MailFleet shows what it actually means: the real gap between sends, when the campaign finishes, and whether your provider can keep up.

Included. Forever.

Template Builder

Build emails that look right everywhere.

Drag blocks into place to build your email. No coding needed. Underneath, MailFleet uses MJML — a well-known email framework that makes sure your design still looks correct in Outlook, Gmail, and on phones.

If you prefer to write the HTML yourself, you can. Save any email as a template and reuse it later.

Drag and drop Write HTML
  • Drag-and-drop builder
  • Looks right in Outlook
  • Edit the HTML directly
  • Save and reuse templates
  • Add names and other details
  • Vary wording with spintax

Included. Forever.

Drag blocks to build the email. Switch to code any time. Templates autosave to the encrypted local database.

Full Sending Logs

See exactly what happened to every email.

MailFleet saves a record of every email you send. One line per person, showing the campaign, which server sent it, what happened, and the exact reply the mail server gave back.

So when an email bounces, you get the real reason — not just a number in a chart. The logs are stored on your computer, and they do not get deleted after 30 days.

  • One record per person, per email
  • The exact reply from the mail server
  • Filter by campaign, server, or error
  • Kept on your computer, for as long as you want

Included. Forever.

One row per recipient — 47,880 in this view. Filter by campaign, sending server, proxy, event type, or error code.

Recipient Lists

Your contact list stays on your computer.

Import your contacts, tag them, group them, remove duplicates, and keep a do-not-email list. Everything is saved in an encrypted file on your own machine.

Because your list never leaves your computer, it does not matter to MailFleet whether you have 500 contacts or 500,000. The price is the same.

Most email platforms
MailFleet
Bigger monthly bill
Still $49, once
Often still charged for
Not charged — no bill
The company's servers
Encrypted, on your computer

Included. Forever.

The audience preview, before launch: how many came from your lists, what survived tags and deduplication, and how many will actually be sent.

Sending Servers

Use your own SMTP or email providers api.

MailFleet does not sell you email sending. You already pay an email provider — connect it, and MailFleet handles everything else. Add as many providers as you use, test each one before you rely on it, and give different campaigns different providers.

No server to rent. No hosting to set up. Install the app and connect your provider.

MailFleet sends through SMTP Server, Amazon SES, SendGrid, Mailgun, Postmark, Resend, Brevo, Cloudflare, Mailtrap, Mailers.io, Mailjet, SparkPost, MailerSend and Zoho ZeptoMail. Every one of them is your own account — you connect it with your own credentials, and MailFleet never sits between you and your provider.

SMTP and provider APIs side by side, each with its own authentication status, sending caps, and last connection test.

Any SMTP server

Enter your host, port, and password. If it sends email, MailFleet can use it.

Email provider APIs

Connect your provider directly for faster sending and better delivery info.

Test it first

Run a test and see the result before you trust a provider with a real campaign.

Included. Forever.

You still pay your own email provider, and their limits still apply. MailFleet is the software — it is not an email service.

Proxy Management

Send through your own proxies.

You can set one proxy for everything, or give each sending server its own. Useful if you run campaigns for several clients and want to keep each client's sending separate rather than sharing one connection.

You bring your own proxies — MailFleet does not sell them. Using a proxy does not change your provider's rules or our anti-spam policy.

Included. Forever.

The Proxy column, in the sending servers list. Each server routes through its own, or none at all.

Scheduling & Pacing

Schedule the send. Set the pace.

Pick when a campaign goes out and how fast it sends. Line it up in advance and it waits in a scheduled state until the moment you chose — no need to be at your desk to hit send.

A steady, spaced-out pace looks far more human than firing everything at once.

  1. Start Send now, or set a date and time and let it wait in "scheduled" until then.
  2. Pace Put a fixed or random gap between each email — say 20–60 seconds — instead of one big burst.
  3. Limits Every sending server's hourly and daily caps are respected automatically.

Included. Forever.

Set the date and the campaign waits in "scheduled" until then — so the send is lined up in advance, not sitting on your to-do list.

Multi-Threaded Sending

Send many emails at the same time.

Most software sends your list one email after another, which is slow. MailFleet opens several connections at once and sends in parallel, so a big campaign finishes in a fraction of the time.

You decide how many at once. MailFleet stays inside the limits your provider sets.

You set the speed

Choose how many send at once

Per server

Each provider gets its own limit

Stays safe

Never goes over your provider cap

From the campaign review screen: your interval applies per sending server, in parallel.

Included. Forever.

Reliability

Two things that save your campaign when something goes wrong.

Big campaigns take hours. In that time your computer might restart, or your email provider might have a hiccup. Neither one should cost you the campaign.

Auto-Resume

If your computer restarts, your campaign keeps going.

MailFleet saves its place as it sends. If the power goes out or Windows decides to update itself, MailFleet picks up where it stopped when you open it again.

Nobody gets the same email twice, and nobody gets missed.

8,412 sent — then the computer restarts

MailFleet reopens — and carries on at 8,413

Included. Forever.

Automatic Retry

If an email fails, MailFleet tries again.

Sometimes an email fails for a temporary reason — the provider is busy, or the connection times out. MailFleet tries that person again up to three times, waiting a little longer before each attempt, instead of giving up on them.

If an address is genuinely dead, MailFleet records it and moves on.

Temporary problem — retried 3× with up to 60s backoff

Address does not exist — recorded, not retried

Included. Forever.

The sending-behavior panel on the review screen, before you launch. Retries and resume-after-restart are settings you can see, not promises.

Spam Checker

Check your email for spam problems before you send.

MailFleet scores your email and tells you which words, links, or settings are likely to trip a spam filter. You run the check while the email is still a draft, so you can fix the problems first.

MailFleet also checks your SPF, DKIM, and DMARC records. These tell mail servers that your email is really from you — and getting them wrong is one of the most common reasons good email lands in spam.

Included. Forever.

A spam score is a helpful guide, not a promise. No tool — MailFleet included — can guarantee your email reaches the inbox.

Score a draft before it sends. Four scorers, including two that need no signup — and the app tells you what the number means.

Webhooks

Send your results to your other tools automatically.

A webhook tells another system the moment something happens. When an email is delivered or bounces, MailFleet can pass that straight to your CRM, your database, or your Slack channel.

No exporting spreadsheets on Friday afternoon. Set one up for everything, or a separate one for a single campaign.

  • One setup for all your campaigns
  • Or a separate one per campaign
  • Tells you about deliveries, bounces and complaints
  • Works with any tool that accepts a web address

Included. Forever.

Six endpoints, each picking its own events. The Health column tells you when one has stopped accepting them — this one's last ten all failed.

MCP Server for AI

Ask an AI assistant about your campaigns.

MailFleet can connect to AI assistants like ChatGPT, Claude, OpenClaw and others. You ask a question in plain English and get an answer from your own campaign data — no report to build, no spreadsheet to dig through.

The connection uses MCP, an open standard that lets AI assistants talk to real software.

“Which campaign had the most bounces last month?”

“Did my email to this person arrive? If not, why?”

“Summarize yesterday's sending for me.”

“Which of my providers is closest to its daily limit?”

Copy the config into your AI client and it can read your campaigns. Bound to 127.0.0.1 — never reachable from another machine — with a token you can reset at any time.

And it runs on your computer. Other email platforms offer the same thing, but theirs runs in their cloud — so your campaign data has to travel to their servers to answer your question. MailFleet's runs on your machine, reads your local data, and is part of the $49.

Included. Forever.

Dark & Light Theme

Dark mode and light mode.

Switch whenever you like. A small thing — until you are watching a big campaign finish late at night.

Included. Forever.

All 16 features. One payment of $49.

Not a starter plan. Not 16 features with the useful ones locked until you upgrade. The whole app, on Windows, macOS, and Linux — and if it does not do what this page says, you have 14 days to get your money back.

Get 366-Day Access — $49

One-time payment · One active device · 14-day money-back guarantee

See MailFleet manage a campaign from setup to report.

A real screen recording of the application — not a mock dashboard.

Watch on YouTube

From installation to campaign control in four steps.

Step 1

Install and activate

Download the signed installer for Windows, macOS, or Linux and activate the application with your license key.

Step 2

Connect your provider

Add your SMTP or API credentials and test connectivity before using the provider.

Step 3

Prepare and validate

Create your campaign, select the recipients, review the template, and run pre-send checks.

Step 4

Launch and monitor

Start or schedule the campaign, monitor events, and review local logs and reports.

Get 366-Day Access — $49

Five workflows. One desktop application.

Everything a campaign operator needs — grouped by the work you actually do, not a wall of icons.

Group 1 · Campaign Operations

Run every campaign from one organized workspace.

Create, duplicate, schedule, and control campaigns without switching tools. Track status at a glance and keep your work organized as volume grows.

  • Create & duplicate campaigns
  • Schedule campaigns
  • Pause and resume
  • Per-mailbox rate limiting
  • Campaign status tracking
  • Search & filtering

Group 2 · Templates & Personalization

Build reusable, personalized content with confidence.

Work in HTML or plain text, reuse templates across campaigns, and personalize with variables and spintax. Preview each message before you send.

  • HTML and plain-text content
  • Reusable templates
  • Personalization variables
  • Spintax content variation
  • Subject management
  • Live preview

Group 3 · Provider Control

Connect and manage the providers you already pay for.

Add multiple SMTP and API provider profiles, test connectivity, configure encryption, route through per-mailbox proxies, and cap sending rates — with visible provider responses.

  • Multiple SMTP & API profiles
  • Connection testing & verification
  • Encryption (STARTTLS / SSL)
  • Per-mailbox outbound proxy
  • Hourly & daily sending caps
  • Provider response visibility

Group 4 · Final Review

See the whole campaign before it sends.

The last step puts everything on one screen: an audience funnel — from your lists, through tags, deduplication, and your suppression list, down to exactly how many will send — beside a full summary of the schedule, content, sending servers, and attachments. Confirm it, then launch.

  • Audience preview funnel
  • Deduplicated recipient count
  • Suppression & cross-list dedup
  • Full campaign summary
  • Personalization coverage check
  • Won't launch an empty campaign

Group 5 · Logs, Reports & Automation

See exactly what happened — and automate what is next.

Keep detailed local logs, review per-recipient events and delivery/bounce stats, auto-pause on bounce or complaint spikes, trigger signed webhook events, and expose an optional read-only MCP endpoint so your AI agents can query campaigns.

  • Detailed local logs
  • Per-recipient event history
  • Delivery & bounce stats
  • Auto-pause on bounce / complaint spikes
  • Signed webhook events
  • Read-only MCP endpoint for AI agents

Built for operators who already control their email infrastructure.

MailFleet is a great fit for some teams and the wrong tool for others. Here is the honest line.

A strong fit when…

  • You use your own SMTP or email API provider.
  • You run permission-based campaigns.
  • You need detailed local logs.
  • You manage multiple providers or brands.
  • You want desktop software instead of another browser dashboard.
  • You want to avoid per-contact and per-email MailFleet charges.
  • You need Windows, macOS, or Linux support.

Not the right fit when…

  • You need MailFleet to provide SMTP servers.
  • You are looking for purchased recipient lists.
  • You need a hosted CRM or lead database.
  • You want guaranteed inbox placement.
  • You need a browser-based multi-user collaboration platform.
  • You intend to send unsolicited or abusive email.

Your providers. Your campaign data. Your machine.

MailFleet is designed around a desktop-local campaign model. Campaign lists, templates, credentials, proxy profiles, logs, and configuration remain on your device by default. MailFleet does not relay campaign email through MailFleet-operated SMTP infrastructure.

Typical hosted platform
MailFleet desktop
Campaign data stored in vendor cloud
Campaign data stored locally by default
Provider choices may be restricted
Connect supported SMTP / API providers
Recurring platform charges
Lifetime license available
Logs tied to hosted dashboard
Detailed local logs
Browser access required
Native desktop workflow
Vendor combines software and sending
Customer controls sending provider

Local storage gives you greater control, but you remain responsible for workstation security, backups, credential protection, and lawful processing of recipient data.

Stop paying the software layer every month.

Example — software layer only

Current software cost
$49 / month
12-month cost
$588
24-month cost
$1,176
MailFleet 366-Day
$49 once
Cost category
Subscription software
MailFleet 366-Day
Software payment
Monthly or annual
$49 once
Per-contact software fee
Often applicable
No MailFleet fee
Per-email software fee
May apply
No MailFleet fee
Sending provider
Included or separate
Separate
Minor product updates
While subscribed
Minor updates during term
Priority support
While subscribed
One year

Provider, SMTP, API, infrastructure, and related sending costs are not included. This comparison covers the MailFleet software-license layer only.

Real product. Verifiable evidence.

We do not show fake ratings, logos, or testimonials. Until we publish verified customer stories, here is the concrete proof that MailFleet is a real, working application.

Real application screenshots

The interface shown on this page is the actual desktop app.

View →

Public changelog & releases

Track what ships and when, with release notes.

View →

Signed / notarized installers

Verifiable Windows signing, macOS notarization, Linux checksums.

View →

Security documentation

Transparent data-handling and setup documentation.

View →

Built for the way your team sends.

MailFleet fits a range of senders. Open the one that matches you for the workflow, providers, and setup in detail.

SaaS companies

Send product and lifecycle email through your own Amazon SES, SendGrid, or Postmark — with the logs, webhooks, and pre-send checks a marketing cloud will not give you.

See use case

Agencies

Run every client from one desktop, each on its own sending provider — provider isolation, technical diagnostics, and exportable delivery evidence, with no per-client subscriptions.

See use case

Internal operations teams

Send operational and IT email through your corporate SMTP or API providers, with audit logs and pre-send validation built for critical messaging — not marketing automation.

See use case

Newsletter operators

Publish to a list you own through your own provider — templates, spam-score checks before you send, and exportable delivery logs, at flat pricing whatever your list size.

See use case

Transparent limitations

  • MailFleet does not guarantee inbox placement.
  • MailFleet does not provide SMTP infrastructure.
  • You remain responsible for consent and compliance.
Security & Data Handling Privacy Policy Terms Refund Policy Anti-Spam Policy Acceptable Use Policy

One payment. Long-term campaign control.

MailFleet 366-Day

$49 one-time payment
  • 366 days of access
  • One active device
  • Windows, macOS, and Linux
  • All core MailFleet features
  • Minor updates during your license term
  • One year of priority support
  • No MailFleet per-email fees
  • No MailFleet per-contact fees
  • No MailFleet per-campaign fees
  • 14-day money-back guarantee
Get 366-Day Access — $49

Secure payment · License delivered by email · Download immediately after purchase

  • SMTP / API sending services are not included. You connect and pay for your own sending provider.
  • Future major versions may be priced separately.
  • Provider usage limits and charges still apply.
  • Permission-based sending only.
  • One license supports one active device; transfers to a replacement machine are handled through your license.

Test MailFleet in your own workflow for 14 days.

Purchase MailFleet, install it on your computer, connect your supported provider, and test it in your real campaign workflow. If MailFleet does not work as described for your setup, request a refund within 14 days under the refund policy.

Get MailFleet With 14-Day Protection

No long-term lock-in. Cancel within 14 days for a full refund under our refund policy.

Questions, answered honestly.

What is MailFleet?

MailFleet is desktop email campaign software for Windows, macOS, and Linux. It connects to supported SMTP and email API providers and provides campaign management, templates, pre-send diagnostics, logs, reports, and webhooks.

Does MailFleet include SMTP servers?

No. Customers connect their own SMTP or supported email API providers.

Which email providers does MailFleet support?

MailFleet sends through any standards-compliant SMTP server, and connects directly to the APIs of Amazon SES, SendGrid, Mailgun, Postmark, Resend, Brevo, Cloudflare, Mailtrap, Mailers.io, Mailjet, SparkPost, MailerSend and Zoho ZeptoMail. You use your own account with each one.

Does MailFleet charge per email or contact?

No MailFleet per-email, per-contact, or per-campaign fee applies. Provider charges and limits still apply.

How many computers can I use?

Each license is for one active device at a time. Your device is identified by a local machine ID, and device limits are managed through your license. If you replace or reset a machine, contact support to move your license.

Can I change from Windows to macOS or Linux?

MailFleet is the same application on all three platforms, and your license is not locked to one operating system. Switching OS counts as moving to a new device, subject to the one-active-device limit — contact support if you need help transferring.

Does MailFleet guarantee inbox placement?

No. Inbox placement depends on reputation, authentication, content, recipient engagement, list quality, provider policy, and mailbox filtering.

Is MailFleet for cold email?

Yes, you can use this for your cold email. However, you remain responsible for lawful processing of recipient data, including consent and opt-out handling. MailFleet does not provide purchased lists or guarantee inbox placement.

Where is my campaign data stored?

Campaign lists, templates, logs, credentials, and configuration remain on the local device by default.

Is an internet connection required?

Yes — for license validation, provider connectivity, email delivery, diagnostics that use online services, and application updates.

Which platforms are supported?

Windows 10 or later (64-bit); macOS 12 or later (Apple Silicon and Intel); supported 64-bit Linux distributions using DEB or RPM packages.

Are installers signed?

Yes. Windows builds are code-signed, macOS builds are notarized, and Linux packages ship with checksums so you can verify each release.

Can I receive a refund?

Yes. If MailFleet does not work as described for your setup, you can request a refund within 14 days of purchase under our refund policy.

What support is included?

Your license includes one year of priority support covering installation, provider setup, and troubleshooting. See the contact page for available channels.

Can agencies use MailFleet?

Yes for legitimate client campaigns, but each license currently supports one active device. Multi-device requirements may require additional licenses.

Buy MailFleet

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  • Download for Windows, macOS, or Linux — your license works on any of them.
  • If it does not work as described, ask for your money back within 14 days.

1YEAR

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Total payable $49
  • ✓ 366 days of access
  • ✓ Up to 1 device

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Product tour

See every screen before you decide

real screens from the MailFleet desktop app — click any one to enlarge, or browse with the arrows or your keyboard.

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Take control of your email campaign workflow.

Connect your own providers, run pre-send checks, keep detailed local logs, and stop paying recurring MailFleet software fees.

Get 366-Day Access — $49 Watch the Demo

One-time payment · One active device · 14-day money-back guarantee

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$49 366-Day

One-time · 14-day guarantee

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