Mail Merge. Local-First.

Send personalized emails from your desktop. Your contacts stay on your machine. No cloud, no complexity.

Runs locallyBatch sendingNo cloud required
Outboxer
Outboxer screenshot: Main application interface

Why Outboxer

Local Storage

Contacts stay on your machine. No cloud uploads, no third-party access.

Variables

Personalize each email with CSV fields. Name, company, custom data.

Batch Control

Send in batches to protect your sender reputation. Set timing and volume.

Native Threads

Replies arrive in your inbox. Normal email threads, no dashboard.

Import. Write. Send.

Import

Load your CSV and map columns to variables.

Write

Create your template with placeholders.

Preview

Check individual emails before sending.

Send

Start batch send with delivery controls.

Used by Professionals

No cloud uploads. My contact data stays where it belongs.

Marketing Director

B2B Software

Batch sending improved our deliverability. Response rates up 40%.

Sales Manager

Professional Services

Setup took 5 minutes. Sending within the hour.

Founder

Recruiting Agency

Privacy by Design

Your data stays local. No uploads, no tracking.

One Price. One Device.

No subscriptions. Buy once, use forever.

Ready to Start

Download the free trial. Local-first mail merge.