Plunk vs turboSMTP
Plunk
useplunk.comturboSMTP
turbosmtp.comSide by side
| Figure | Plunk | turboSMTP |
|---|---|---|
| Price from | Free | €14.95/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 4 | 18 |
| Spec score · Transactional email services | 8.1 (#23) | 9.1 (#3) |
| Spec score · Email APIs | 7.6 (#23) | 8.7 (#3) |
| Spec score · Transactional Email Software | 7.8 (#31) | 8.7 (#8) |
| Free plan | Yes | No |
| Integrations | Plunk offers a REST API, SDKs including Node.js and Python, SMTP support, webhooks, and an MCP server that works with MCP clients such as Claude Code, Claude Desktop, and Cursor. | A Zapier app launched with Send Email and Find Email Status actions for connecting CRMs, forms, spreadsheets and other Zapier applications. |
| Product | Plunk is an open-source email platform for transactional email, marketing campaigns, and automated workflows against one contact list. | turboSMTP is a cloud SMTP service for sending email messages and newsletters, with statistical analysis for individual and aggregate messages. |
| Self-hosting | The AGPL-3.0 licensed platform can be deployed on the customer's infrastructure using Docker Compose. | The documentation describes hosted API and SMTP endpoints and provides no self-hosted deployment package. |
| Support | The maker invites customer feedback and lists a Discord community on its site. | The company states that ticket, live-chat and phone support are available around the clock and handled by human staff. |
| Transactional email | It supports API and SMTP delivery for receipts, password resets, and other event-driven email. | Its SMTP API supports sending transactional messages such as login confirmations, welcome messages, and receipts from a website or app. |
Plans
turboSMTP
- FreeFree
- Basic€14.95 a month
- Pro€79.95 a month
- Silver€49 a month
- Gold€92 a month
- Resell€270 a month
- Titanium€450 a month
- Diamond€790 a month
- FREEFree
- BASIC€14.95 a month
In their own words
turboSMTP
turboSMTP is a cloud SMTP service for sending email messages and newsletters, with statistical analysis for individual and aggregate messages. Its SMTP API supports transactional messages such as login confirmations, welcome messages, and receipts from a website or app. The dashboard tracks clicks and opens in real time, while listed tools manage bounces, spam, and unsubscribes. Deliverability features include smart routing, custom tracking domains, and email validation before campaigns. An email marketing tool can design, send, and track campaigns using turboSMTP delivery infrastructure. The service lists SMTP relay, email templates, delivery event webhooks, and a dedicated IP option; inbound email is not supported. It offers a free plan allowing 200 emails per day for the first six months. Basic costs €14.95 a month for 15,000 emails per month; Pro costs €79.95 a month for the same send limit and up to 100 subaccounts. Other listed plans sell email credits, which expire one year after purchase. Platforms include Android, API, iOS, and web. The maker advertises 24/7 multilingual support by phone, chat, and email.