# Plunk review (2026): is the free plan enough? > Open-source email platform for transactional and marketing mail Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. Plunk is an open-source email platform that covers transactional email, campaigns and event-triggered workflows against one contact list. The hosted version runs in the EU and bills per email sent rather than per contact, and the same code can be self-hosted under the AGPL-3.0 license. - **Category:** Email Sending Services - **Made by:** Plunk - **Website:** https://www.useplunk.com - **Runs on:** Web - **Who should skip it:** Tight if you send more than 1,000 emails a month on the free plan, which also adds Plunk branding. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, Plunk has a free plan, and paid plans start at $0.001 per email sent. - **Pricing model:** Free plan - **Free plan:** 1,000 emails per month with unlimited contacts and every feature, with Plunk branding on emails. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | Free forever | $0 | 1,000 emails a month and unlimited contacts. Every feature is included, but emails carry Plunk branding. | | Pay as you grow | $0.001 per email sent, no monthly fee | Removes the Plunk branding and the 1,000-email cap, with a monthly spend cap you can set. The vendor's example shows 10,000 emails costing $10. | Read from https://www.useplunk.com/pricing on Nov 13, 2026. Prices change, so confirm with Plunk before buying. ## Key features - **Transactional email:** Send single emails through a REST API or an SMTP relay, from your own domain with DKIM signing. - **Campaigns and newsletters:** Broadcasts go to the whole contact list or to a segment, with a visual and an HTML editor and open and click tracking. - **Workflows:** Event-triggered sequences with delays, conditions and webhook steps, started by something a contact does in your product. - **Segments:** Dynamic segments are queries that re-run each time they are used, so a campaign reaches the current audience. - **Inbound email:** Addresses at your domain can receive mail, and replies become contacts that can start workflows. - **Self-hosting:** The code is open source under AGPL-3.0 and can be deployed with Docker Compose on your own servers. ## Good for - Developers who want transactional and marketing email in one tool - Teams with big contact lists, since the bill follows sends and not contacts - Teams that want the option to self-host the same code ## Worth knowing - The free plan stops at 1,000 emails a month and puts Plunk branding on emails. - The paid plan has no monthly fee: it is $0.001 per email, so cost scales directly with volume. - The hosted service is in the EU; self-hosting under AGPL-3.0 carries that license's obligations. ## ToolGPA grades **GPA: 2.6 out of 4**, graded Nov 13, 2026. Plunk covers transactional email, campaigns and workflows against one contact list, and bills $0.001 per email with no monthly fee. The free plan stops at 1,000 emails a month with Plunk branding on every message. - **Value for money: B.** No monthly fee; $0.001 per email, so 10,000 emails cost $10, near the cheapest quarter of $9 for sending tools. Cost grows with volume. - **Free plan and trial: C.** Free for 1,000 emails a month with unlimited contacts and every feature, but emails carry Plunk branding. - **Features: B.** Transactional email, campaigns, workflows, segments and inbound email. The listing shows no gap in the core job. - **Ease of use: C.** No store rating on record. It is built for developers and can be self-hosted under AGPL-3.0. - **Platforms and integrations: B.** Web, with Amazon SES and Docker listed. No apps, and the hosted service is in the EU. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Plunk's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among email sending services - Plunk's GPA of 2.6 is higher than 34 of the 50 other email sending services we grade, and level with 11. - It stands best on features (B, above 30 of 50) and worst on ease of use (C, above 7). The category's chart of price against score: https://toolgpa.com/charts/email-sending ## Keep it, or make your own? **Keep it.** To replace Plunk you would be making mail servers with a good name among inbox providers. That is not a weekend's work, with an AI app builder or without one. It is one of the better ones too: its GPA of 2.6 is higher than 34 of the 50 other email sending services we grade. Plunk is open source, so there is a third way: take its code and run it yourself. - You could not: Mail servers with a good name among inbox providers. - You could not: Newsletters sent to thousands of people that still reach the inbox. - You could not: Connections to other products, each kept working as those products change. - You could not: The depth: we grade its features B, which means it covers the whole job. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Amazon SES, Docker **Tags:** Transactional email, Email campaigns, Workflow automation, Open source, Self-hostable, Public API ## Alternatives - [Resend](https://toolgpa.com/tools/resend): Developer email API with React Email templates and a free tier. [Compare](https://toolgpa.com/compare/plunk-vs-resend) - [Twilio SendGrid](https://toolgpa.com/tools/sendgrid): Twilio's email API and SMTP service, priced by monthly email volume. [Compare](https://toolgpa.com/compare/plunk-vs-sendgrid) - [Mailgun](https://toolgpa.com/tools/mailgun): Email API and SMTP relay for developers, with list validation. [Compare](https://toolgpa.com/compare/mailgun-vs-plunk) - [Postmark](https://toolgpa.com/tools/postmark): Transactional email API and SMTP, with broadcasts on a separate stream. [Compare](https://toolgpa.com/compare/plunk-vs-postmark) - [Amazon SES](https://toolgpa.com/tools/amazon-ses): AWS email sending and receiving, paid per 1,000 emails. [Compare](https://toolgpa.com/compare/amazon-ses-vs-plunk) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://www.useplunk.com/pricing - https://www.useplunk.com - https://www.useplunk.com/terms Page: https://toolgpa.com/tools/plunk Listed by ToolGPA (toolgpa.com).