Xem

Founder & product engineer · Open-source email infrastructure

Open-source email infrastructure for campaigns, automations and SMTP delivery, built in Go with PostgreSQL and Redis/Asynq workers.

Go · PostgreSQL · Redis · Asynq · SMTP

Campaigns, automations and delivery

I built an email platform in Go for campaigns, automations and SMTP delivery. PostgreSQL backs the platform, with Redis and Asynq workers handling background work.

Durable sending workflows

I implemented a durable sending outbox, suppression checks and delivery feedback processing. The sending workflow explicitly handles uncertain sends to avoid blind retries.

Founder-led email infrastructure

As founder and product engineer, my work spans the email platform and the delivery infrastructure behind it. Xem is open-source email infrastructure, with durability and explicit handling of sending uncertainty built into its workflows.

a man smiling for the camera

Harsh Vardhan

Senior Software Guy

6:06 AM

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Available

a man smiling for the camera

Harsh Vardhan

Senior Software Guy

6:06 AM

Loading weather data...

Available

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