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jsPlumb VS Postmark

Compare jsPlumb VS Postmark and see what are their differences

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jsPlumb logo jsPlumb

jsPlumb is an advanced, standards-compliant and easy to use JS library for building connectivity based applications, such as flowcharts, process flow diagrams, sequence diagrams, organisation charts, etc. More than just a diagram library.

Postmark logo Postmark

Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.
  • jsPlumb Chatbot Builder
    Chatbot Builder //
    2025-04-23
  • jsPlumb Active Filtering
    Active Filtering //
    2025-04-23
  • jsPlumb Flowchart Builder
    Flowchart Builder //
    2025-04-23
  • jsPlumb Hello World
    Hello World //
    2025-04-23
  • jsPlumb Gantt Chart
    Gantt Chart //
    2025-04-23
  • jsPlumb Hierarchy Layout
    Hierarchy Layout //
    2025-04-23
  • jsPlumb Mindmap Builder
    Mindmap Builder //
    2025-04-23
  • jsPlumb Org Chart
    Org Chart //
    2025-04-23
  • jsPlumb Schema Builder
    Schema Builder //
    2025-04-23
  • jsPlumb Path Tracing
    Path Tracing //
    2025-04-23
  • jsPlumb Call Flow Builder
    Call Flow Builder //
    2025-04-23
  • jsPlumb Network Topology
    Network Topology //
    2025-04-23

Build connectivity quickly. Powerful and flexible library for diagramming and rich graphical front ends. JsPlumb contains everything you need to build an application with visual connectivity: pan/zoom, a minimap widget, automatic layouts, data binding, and more. Deep integration with Angular, React, Svelte and Vue.

Cut your time to market by focusing on what makes your app unique and leave the boring stuff to us.

  • Postmark Landing page
    Landing page //
    2024-03-19

jsPlumb features and specs

  • Ease of Use
    jsPlumb provides a straightforward API that simplifies making interactive and dynamic visualizations. It's easy to understand and quick to implement for creating diagrams and flowcharts.
  • Rich Feature Set
    The library offers a wide range of features, including various endpoint and connector types, overlays, and a robust event handling system, making it versatile for different types of projects.
  • Extensive Documentation and Examples
    jsPlumb offers thorough documentation and a variety of example projects, which help developers get started and serve as a resource for troubleshooting and implementing more complex functionality.
  • Cross-Browser Compatibility
    It supports major browsers and ensures consistent behavior across different platforms, which is essential for web applications.
  • Customizable
    With its customizable options, developers can tailor the appearance and behavior of connections and components to fit the specific needs of their application.

Possible disadvantages of jsPlumb

  • Paid Toolkit for Advanced Features
    While the community edition is free, access to some advanced features and support requires purchasing the commercial toolkit, which might be a barrier for some developers or smaller projects.
  • Complexity With Large Diagrams
    As diagrams scale up in complexity, the library may require significant fine-tuning and optimization, potentially increasing development time.
  • Dependency Management
    Managing dependencies can become a concern in larger applications, especially if multiple libraries are being used alongside jsPlumb.
  • Performance Overhead
    In scenarios with very high numbers of connections and nodes, performance issues may arise, necessitating additional performance optimization considerations.
  • Learning Curve for Customization
    Though the basic setup is straightforward, deep customization requires a more thorough understanding of the libraryโ€™s API and structure, which can take time to learn.

Postmark features and specs

  • High Delivery Rates
    Postmark is known for its high email delivery rates, ensuring that transactional emails reach inboxes promptly.
  • Fast Sending Speed
    Emails through Postmark are processed and sent very quickly, which is crucial for transactional emails requiring immediate delivery.
  • User-Friendly Interface
    The platform has an intuitive and easy-to-navigate interface, making it accessible for users of varying technical skills.
  • Detailed Analytics
    Postmark provides comprehensive analytics, including open rates, click rates, and delivery logs, enabling detailed tracking of email performance.
  • Reliable API
    Postmark offers a highly reliable and well-documented API, facilitating seamless integration with various applications.
  • Top-Notch Customer Support
    The service is praised for its responsive and knowledgeable customer support team, available to assist with any issues.
  • Emphasis on Security
    Postmark prioritizes email security with features like two-factor authentication and SSL encryption.

Possible disadvantages of Postmark

  • Cost
    Postmark's pricing can be relatively high compared to some other email service providers, particularly for larger email volumes.
  • Lack of Marketing Email Features
    Postmark is primarily designed for transactional emails and lacks many advanced features needed for marketing emails, such as list segmentation and complex automation workflows.
  • Rate Limits
    Postmark imposes rate limits on sending emails, which might be a constraint for businesses with very high or bursty email volumes.
  • Limited Template Customization
    While Postmark allows for the use of email templates, the customization options are more limited compared to specialized email design tools.
  • Geographical Limits
    Postmark's server locations are primarily based in the U.S., which may affect email delivery speeds in other regions.
  • Lack of SMS Integration
    Postmark does not offer SMS sending capabilities, which may be a drawback for businesses looking to consolidate their communication channels.

Analysis of Postmark

Overall verdict

  • Yes, Postmark is considered a good option for those needing a reliable and efficient transactional email service. It stands out due to its focus on speed, deliverability, and ease of use for both developers and businesses.

Why this product is good

  • Postmark is praised for its reliable email delivery service, which is specifically designed for transactional emails. It offers fast delivery times, extensive real-time tracking, and detailed analytics. Additionally, Postmark provides a user-friendly API and robust documentation, making it easy for developers to integrate and maintain. The service is known for its strong focus on sending emails quickly and efficiently, with a low probability of ending up in spam folders.

Recommended for

  • Businesses needing efficient and reliable transactional email delivery.
  • Developers looking for easy API integration and robust documentation.
  • Organizations requiring real-time email tracking and detailed analytics.
  • Companies prioritizing quick email deliverability and avoiding spam filters.

jsPlumb videos

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Postmark videos

Using Postmark to send email from Darkroom Booth

Category Popularity

0-100% (relative to jsPlumb and Postmark)
Javascript UI Libraries
100 100%
0% 0
Email Marketing
0 0%
100% 100
Development
100 100%
0% 0
Email Delivery
0 0%
100% 100

Questions & Answers

As answered by people managing jsPlumb and Postmark.

Why should a person choose your product over its competitors?

jsPlumb's answer

The flexibility and deep integration of the library is what most clients love. jsPlumb also offers also quick help and support. Wide range of features. Powerful with integration to common web frameworks. Good examples. Support for HTML & SVG.

Who are some of the biggest customers of your product?

jsPlumb's answer

Apple, Walmart, Siemens, Oracle, Cisco, Credit Suisse.

What makes your product unique?

jsPlumb's answer

JsPlumb is a JavaScript library that simplifies creating visual connections between elements in a web application. It is particularly popular for building applications with drag-and-drop interfaces, workflow editors, process modeling tools, or any system where you need to visualize relationships between elements.JsPlumb is designed to work seamlessly across modern browsers, ensuring that your application delivers a consistent user experience to all users.

How would you describe the primary audience of your product?

jsPlumb's answer

JsPlumb's primary audience consists of developers and organizations that need to create visual representations of relationships or workflows in web applications. Web Application Developers, Software Companies, Designers and Engineers of Interactive Tools, Educational and Research Platforms, Enterprises Needing Custom Solutions, Developers Needing Quick Prototyping,Data Visualization Professionals.

User comments

Share your experience with using jsPlumb and Postmark. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare jsPlumb and Postmark

jsPlumb Reviews

20+ JavaScript libraries to draw your own diagrams (2022 edition)
jsPlumb provides a fast way of building applications with visual connectivity at their core. s. It uses SVG and runs on all browsers from IE9 and later. JsPlumbToolkit is its commercial extension. This commercial version wraps the Community edition with a focus on the underlying data model, as well as several useful UI features such as layouts, and a widget that offers...

Postmark Reviews

7 Best Transactional Email Services: Sendgrid vs. Mandrill & More
Postmark are the most expensive transactional email service (10x the cost of Amazon SES), so what do they do to justify the sky high pricing? Their focus seems to be on providing a high-end service using only the best hardware and software to keep your receive rates high, and your data secure. The impression I get with Postmark is that theyโ€™re one of the more transparent...

Social recommendations and mentions

Based on our record, Postmark seems to be a lot more popular than jsPlumb. While we know about 56 links to Postmark, we've tracked only 5 mentions of jsPlumb. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

jsPlumb mentions (5)

  • Do you know any good libraries to make those kind of graph?
    I have looked into https://jsplumbtoolkit.com/ for a couple of projects and it seemed pretty good but it was a pure JS library 'community edition' with a commercial version that had all the nice framework integration for React and Angular. Source: over 3 years ago
  • Low-code development (Node-RED alternative)
    A pretty common one is jsPlumb - https://jsplumbtoolkit.com/ - might be what you're looking for. I'm sure there are others as well. - Source: Hacker News / over 3 years ago
  • Library suggestions for creating unidirectional graphs or flowcharts.
    Check out https://jsplumbtoolkit.com/. Source: over 3 years ago
  • Is there any node graph library for svelte?
    Amazing!!! I am looking specifically for something like react flow as well. After looking into it the best option might be jsplumb. Source: over 4 years ago
  • Creating a drag and drop platform with python
    Hey, finally I found https://jsplumbtoolkit.com/ who seems to be the best solution for that. Source: about 5 years ago

Postmark mentions (56)

  • Congrats to the Winners of Postmark Challenge: Inbox Innovators!
    We want to shout out Postmark for sponsoring this challenge. Postmark's developer-focused API and reliable inbound email parsing made these innovative projects possible, allowing the community to focus on creativity rather than email handling complexity. - Source: dev.to / about 1 year ago
  • PurifyPDF โ€“ A Privacy-First PDF Sanitizer in Your Inbox
    PurifyPDF is a privacy-first PDF sanitization workflow built using n8n, Postmark, PDF.co, and Airtable. - Source: dev.to / about 1 year ago
  • Invisible Threads: Group email without the exposure
    Invisible Threads is built with Elixir, Phoenix, and most importantly, Postmark. Data lives on disk instead of a traditional database to keep the demo light. Authentication uses Postmark API tokens, mapping each application user directly to a Postmark server. The whole thing is deployed to Fly.io. A minimal setup let me focus on Postmark's offerings. - Source: dev.to / about 1 year ago
  • Save time with sumsummary.com!
    Of course, Postmark for email parsing and sending the briefings. - Source: dev.to / about 1 year ago
  • Join the Postmark Challenge: Inbox Innovators - $3,000 in Prizes!
    We are thrilled to partner with Postmark to bring the community a brand new DEV challenge. - Source: dev.to / about 1 year ago
View more

What are some alternatives?

When comparing jsPlumb and Postmark, you can also consider the following products

GoJS - GoJS is a JavaScript library for building interactive diagrams on HTML web pages. Build apps with flowcharts, org charts, BPMN, UML, modeling, and other visual graph types.

Mailgun - A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.

mxGraph - mxGraph is a fully client side JavaScript diagramming library - jgraph/mxgraph

Twilio - Brings voice and messaging to your web and mobile applications.

Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.

Resend - Email for developers