Open Source Project

Smart Mailer

A desktop-based cold emailing engine with Outlook sending, spintax, and humanized scheduling.

Smart Mailer is built for founders and small teams who want outbound email control without paying for another SaaS subscription. It runs locally, connects to Microsoft Outlook on Windows, manages contacts and templates, and sends campaigns in a more human-like way using paced delivery rules.

Smart Mailer screenshot 1

Overview

Built around local sending instead of bulk-mail infrastructure

According to the project README, Smart Mailer uses the native Microsoft Outlook client on Windows through local COM automation. The goal is to send campaign emails in a paced, user-like pattern rather than relying on a shared SMTP bulk sender. It also includes template building, CSV variable injection, scheduling rules, and a local database-backed workflow.

Humanized sending

Sends through the local Outlook client with paced timing, working-hour windows, and optional weekend skips.

Spintax and variants

Build rotating subject lines and message variants to reduce repetitive patterns across campaigns.

Audience management

Import CSV contacts, map columns, keep category-based lists, and preserve extra fields for template variables.

Desktop-first control

Run campaigns from a local Windows app with queue management, pause controls, and built-in state tracking.

Screenshots

A closer look at Smart Mailer

Smart Mailer screenshot 1
Smart Mailer screenshot 2
Smart Mailer screenshot 3

Desktop outreach with more control and less subscription overhead

Smart Mailer is designed for teams that want to manage sending rules, personalize campaigns, and keep the workflow on their own Windows machine.