Plunk

Overview

Plunk is an open-source email tool that sends through Amazon SES. It covers both of its listed categories: transactional email (receipts, notifications, confirmations) and marketing email (campaigns, newsletters).

The defining detail is the architecture. Rather than operating its own mail infrastructure, Plunk sends through SES — so anything you send rides on Amazon's email system, with its sending limits and pricing underneath. In practice, that means setting up SES (an AWS account, a verified sending identity) is part of getting Plunk working.

Because the project is open-source, the code is publicly available to inspect and self-host. This listing doesn't include a scraped homepage, so specifics like whether a hosted version is offered, current pricing, and the full feature list aren't covered here — useplunk.com is the source of truth for those.

Key points

• Open-source — the project describes itself as open-source, so the codebase is available to review and run yourself.
• Built on AWS SES — delivery goes through Amazon SES rather than Plunk's own mail servers.
• Transactional + marketing — listed in both categories, suggesting one tool for product emails and campaigns rather than separate systems.

Pricing

No pricing information is included in this listing. As open-source software, there's no license fee for self-hosting; if the project offers paid hosted plans, those would be listed on useplunk.com.

FAQ

Is Plunk free? The software is open-source, so there's no license cost to run it yourself. Whether a hosted version exists and what it would cost isn't stated in this listing.

Do I need an AWS account? For sending, yes — Plunk is built on top of Amazon SES, so you'll need SES access and a verified sender identity. Confirm the exact setup requirements on the project's site.

Can I self-host it? The project is open-source, which typically means self-hosting is possible, but this listing doesn't include deployment details. Check the repository or useplunk.com for setup instructions.

What does Plunk add over using SES directly? SES on its own is a raw sending API. Plunk's placement in the Email Marketing category suggests it adds an application layer — things like campaign management — on top of that raw sending. The specifics aren't detailed in this listing.

Alternatives

• Amazon SES — the service Plunk is built on. Going direct means handling the application layer (templates, campaigns, tracking) yourself.
• Resend — a developer-focused email API if you'd prefer a managed service over self-hosting on SES.
• Postmark — a managed transactional email service, a fit if your main need is product notifications rather than marketing campaigns.
• Mailgun — email APIs for sending, receiving, and parsing; another managed option in the same space.