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Inbox OSS

Use case · Marketing

Newsletters and broadcasts that hit the inbox

A campaign workspace that respects both your audience and your sender reputation. Visual builder, real segmentation, revenue-aware reporting.

Drag-and-drop builder

Brand kit, starter templates, undo history.

Live segments

Filters update as data changes. Save and reuse anywhere.

Send-time intelligence

Per-recipient timezone or ML-picked best moment.

A/B testing

Subject, content, send time, or any combination.

Per-campaign deep-dive

Geo, devices, mailbox providers, funnel steps.

Revenue attribution

Tag conversions, attribute back to the campaign that drove them.

Start sending email in under 5 minutes.

Free plan includes 3,000 emails/month forever. No credit card required.