Professional SMTP
Email Sender

Unlimited accounts, proxy rotation, AI tools, Spintax — everything runs locally on your machine. No SaaS, no monthly server fees.

Download Free Create Account
0 / 58 VirusTotal
Unlimited
SMTP Accounts
50+ parallel
Sending Speed
Windows x64
Platform
98.4%
Delivery
SOCKS5
Proxy
SpamHub MAILER — Campaign #1024
Sent
0
Errors
0
Speed
0/min
ETA
4:12
68% complete 14,382 / 21,000
14:32:08 [smtp-04] OK marcus@acme.io
14:32:08 [smtp-02] OK l.chen@orbit.dev
14:32:09 [smtp-07] 421 retry queued
14:32:09 [smtp-01] OK sara.k@nimbus.co
UNLIMITED SMTP SOCKS5 / HTTP PROXY AI SPINTAX AI ASSISTANT EMAIL VALIDATOR HTML UNIQUIFIER 50+ PARALLEL UNLIMITED SMTP SOCKS5 / HTTP PROXY AI SPINTAX AI ASSISTANT EMAIL VALIDATOR HTML UNIQUIFIER 50+ PARALLEL
Features

Why SpamHub MAILER?

Everything you need for high-volume email campaigns in one .exe

100% Local
No SaaS, no monthly server fees. All data stays on your machine.
Multi-SMTP Rotation
Unlimited accounts, round-robin with auto-disable on error.
Proxy per Connection
Each SMTP connection through a separate proxy for maximum anonymity.
AI-Native Workflow
Write emails, check spam score, generate macro values — all in one app.
AI Spintax
Enter your email text — AI generates rich Spintax with 3–4 synonyms per word for the entire message.
HTML Uniquifier
Thousands of unique HTML files in seconds to bypass duplicate filters.
Deep Personalization
CSV variables, random tokens, custom macros and AI-generated values.
Single .exe Installer
One file, no dependencies. Install in seconds.
Workflow

How It Works

01
Download & Install
One .exe file. No dependencies, no browser, no server.
02
Add SMTP Accounts
Import from file or add manually. Test connections with one click.
03
Launch Campaign
Set recipients, subjects and bodies, hit Send.
Pricing

Simple Pricing

The mailer is free. Unlock advanced tools when you need them.

Free
SMTP Mailer
Full-featured desktop mailer
$0
  • Unlimited SMTP accounts
  • Multi-SMTP rotation
  • SOCKS5 / HTTP proxy support
  • Custom macros engine
  • HTML Uniquifier
  • Recipient CSV with variables
  • Composer with live preview
  • Full delivery logs
Download Free
Most Popular
Pro
Pro Tools
SMTP Warmup + Email Validator + AI Assistant
$200 /month
  • 🔥 SMTP Warmup (Pro exclusive)
  • Everything in Free
  • Email Validator (deep API check)
  • AI A/B Variants generator
  • AI HTML template builder
  • AI Spam Checker
  • AI Rewriter
  • Spintax 2.0 generator
  • AI Macros (500 values/batch)
Get Pro
Smart Choice
Top Up Store Balance
Add $500 to your store balance — more cost-effective than a subscription since the balance never expires and can be used for purchases.
$200
  • Balance does not expire. Use for purchases in the built-in store.
Top Up Balance
AI Powered

7 AI Tools

API keys never leave the app.

01
A/B Variants
Generate multiple unique campaign variants from one offer description.
02
HTML Template
Full responsive HTML email from a text description. Gmail/Outlook ready.
03
Icebreaker
Personalized opening paragraph for cold emails from name, title, company.
04
Spam Checker
Spam score 0–100 + trigger list + recommendations.
05
Rewriter
Rewrite email replacing spam triggers with neutral synonyms.
06
Spintax 2.0
Enter your email text — AI generates rich Spintax with 3–4 synonyms per word for the entire message.
07
AI Macros
Generate up to 500 macro values from natural language description.
FAQ

FAQ

Yes. Download and use with unlimited SMTP accounts, proxy rotation, custom macros, HTML Uniquifier and Composer — all free, no account required.
Email Validator and AI Assistant (7 tools). Access opens with a monthly subscription ($200) or a store balance top-up of $200.
Spintax is an AI feature: enter your email text and AI generates a rich Spintax template with 3–4 synonyms per word for the entire message. Syntax {variant1|variant2|variant3} picks a random option per email for uniquification. Available with the Pro subscription.
SOCKS5 and HTTP/HTTPS. You can bind a proxy to a specific SMTP profile or rotate per connection in a campaign.
Round-robin: SMTP 1 → SMTP 2 → SMTP 3 → SMTP 1... An account is automatically skipped on 5xx error.
A tool that creates unique variations of your HTML email files by randomizing IDs, classes and optionally obfuscating markup — helps bypass duplicate content filters.
All campaign data is stored locally. No telemetry, no cloud sync. SMTP passwords are encrypted via Windows OS keychain.
Windows 10 and Windows 11 x64.
Yes. Any column besides email becomes a {{Variable}} you can use in subject and body templates.

Professional SMTP Email Sender

Unlimited accounts, proxy rotation, AI tools, Spintax — everything runs locally on your machine. No SaaS, no monthly server fees.

Download Free Create Account
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