November 2023 Release Notes

Mailsac Engineering

Throttling notices in every inbox

Custmers will start seeing informational messages in the inbox view https://mailsac.com/inbox/{{ email address }} when there has been throttling imposed on the inbox or sender to the inbox.

Paying customers will very rarely experience throttling. In almost all cases, throttling happens because they were sending to a public inbox, not a custom domain or private address.

We only throttle incoming messages to protect the stability of our service for all of our customers. These protections have been in place for years, but were not transparent to customers.

If you are on a paid plan and you are seeing throttling messages, reach out to support@team.mailsac.com, we can help you configure a custom domain or private addresses. These both can be done in seconds with no need for DNS changes.

If you are on our free tier and seeing these messages, this is a nudge for you to sign up for a paid plan. We would love to have you as a customer.

Updates and Fixes For October 2023

Mailsac Engineering

Unified Inbox, UI Modernization Efforts, and Maintenance Notifications

We do our best to be customer-focused by listening to our customer feedback and making sure your issues are addressed.

This month, we focused on UI issues that customers reported or we noticed when we were using our service.

Improved Maintenance Notifications

During a major database upgrade in September we noticed our maintenance notification on the website wasn’t always working properly. This resulted in customers seeing an unfriendly error.

From now on, customers will see a friendlier error page or API message when we are down for maintenance. That’s typically rare – once a year on average. We deploy often. Mailsac’s architecture has several load balancers and caches, and redundancies – we avoid stop-the-world events. But sometimes that’s unavoidable, and we hope it won’t be confusing.

Unified Inbox

The navigation bar for the Unified Inbox now works properly under Safari. It should no longer be cut-off (missing pagination buttons) in other browsers while viewing a message.

Starred messages for non-owned inboxes will now appear in the Unified Inbox.

UI Modernization

As noted in previous posts, we are migrating the entire Mailsac user interface to React and Next.js. After all pages are migrated, we will give the styling a facelift.

For now the migration should look seamless – perhaps slightly faster and more solid (thank you static typing and pre-compilation).

The account details page has been converted over to Next.js.

A bug that didn’t allow a customer to remove an invoice email was fixed.

The password reset and account deletion functions were moved to their own pages.

We added many more integration tests to account management features.

Backend upgrades

On a weekly basis we patch, upgrade and improve the many backend systems of Mailsac across several environments. Typically this involves making small change to ansible, terraform, docker, code dependencies, or other infra-as-code. We often migrate portions of the 12+ year old Node.js JavaScript codebase to TypeScript or Go. If we’re luckily, we can delete unnecessary code or remove a dependency.

To run this SaaS smoothly, every day we get onto the software treadmill. We we enjoy running this service immensely, and hope you enjoy using it.

Updates and Fixes In August and September 2023

Michael M

Mailsac remains committed to continuous improvement. Every day we improve the product based on customer feedback and SaaS best practices.

Here’s a summary of the latest enhancements.

  • New homepage and header navigation enhancements.
  • SAML Configuration Fix: enabled customer-supported account deletion when SAML is configured.
  • Testing: refactored and extended test coverage to payment processing.
  • Database: A series of database upgrades have been applied. This will continue through October to ensure we are leveraging the latest fixes and performance improvements.
  • Next.js: we continue overhauling the entire site using Next.js, in anticipation of a major restyle in 2024.

There are no breaking changes to any public API in these releases.

For further inquiries, please contact support@team.mailsac.com

Scheduled Maintenance Notification for Mailsac – October 7th 2024

Michael M

We want to inform you about a scheduled maintenance window set for October 7th between 0600 and 0800 PST (1300 – 1500 UTC). During this period, our team will be conducting a database upgrade to enhance the performance and reliability of our services.

Please note that requests to the REST API and the Web application may fail during this maintenance window. We recommend avoiding making requests to our services during this time to prevent any inconveniences.

We appreciate your understanding and cooperation. Rest assured that we are working hard to minimize the downtime and to continue delivering quality service to all our valued users.

Thank you for choosing Mailsac!

Best, The Mailsac Team

Mailsac Enhances Free Tier: Introduces One Free Private Address for Improved Privacy and Advanced Email Testing Capabilities

Michael M

We’re delighted to announce a significant enhancement to our free tier plan, specifically tailored to meet the needs of Quality Assurance (QA) teams and automated testers. Effective immediately, all free Mailsac users will have access to one free private address, enabling them to maintain confidentiality during email testing and ensure privacy for sensitive testing communications.

The addition of the free private address empowers QA teams and automated testers with an extra layer of control over their email testing activities. With the free private address, they can separate and safeguard their testing correspondence, ensuring the confidentiality of valuable testing data. By seamlessly managing both public and private email addresses within a single Mailsac account, QA teams and automated testers can streamline their workflow and simplify the management of their testing environments.

“At Mailsac, we understand the critical importance of data privacy and confidentiality in the testing process. We are excited to offer QA teams and automated testers the advantage of one free private address to enhance their email testing capabilities,” stated Michael Mayer, managing executive at Mailsac. “This enhancement is a testament to our commitment to empowering professionals in the QA field with robust email solutions that prioritize privacy and security.”

In addition to the free private address, Mailsac’s free tier plan includes a comprehensive range of features designed to cater to the unique needs of QA teams and automated testers. These features include rolling message storage space, customizable email addresses, and reliable email forwarding and routing capabilities. The ability to forward emails to various testing integrations environments, via Slack, webhooks, websockets, and other Mailsac addresses, facilitates seamless communication and collaboration within a company’s testing ecosystem. Furthermore, Mailsac provides a robust REST API, enabling QA teams and automated testers to check and manage email messages with ease during their testing cycles.

To benefit from enhanced privacy, advanced email testing capabilities, and a comprehensive range of features, QA teams and automated testers can sign up for Mailsac’s free tier plan at https://mailsac.com/pricing. The inclusion of the free private address and the expanded email testing options demonstrate Mailsac’s commitment to meeting the specific requirements of QA professionals, enabling them to conduct thorough and secure email testing.

About Mailsac: Mailsac is the leading provider of secure and flexible email testing services, catering to the needs of individuals, small businesses, and organizations worldwide. With a strong emphasis on user privacy and data protection, Mailsac empowers QA teams and automated testers to conduct rigorous and secure email testing while maintaining control over their digital identities. From the free tier plan to enterprise offerings, Mailsac delivers unmatched email solutions and exceptional customer support.

For media inquiries, please contact: Michael Mayer Email: mjmayer@team.mailsac.com

Why Professional QAs and Software Devs May Choose Mailsac Over Disposable Email

Jeff P

Email deliverability testing, and QA testing web apps with multiple account permissions, are critical aspects of software development and Quality Assurance (QA). Although disposable email websites and gmail addresses are a common choice for this task, they present several significant drawbacks for enterprises. This article will detail the advantages of using dedicated email deliverability platforms like Mailsac instead.

Limitations of Disposable Email

1. Security and Privacy

Disposable email platforms typically make all emails public. These websites are frequently crawled by scammers to acquire sensitive information.

Disposable email services often lack robust security measures, exposing sensitive test data. This lack of security can compromise the integrity of testing and risk breaches of confidential information. They rely on security through obscurity – random email addresses that are hopefully unguessable.

Disposable email providers typically do not have Information Security and Assurance programs, and cannot pass a Vendor Risk Assessment.

2. Business Agreements

The terms of service for disposable email services are often unsuitable for professional development and testing contexts. They can include problematic clauses and offer limited protections for users, which isn’t ideal for businesses. The terms and privacy policies tend to be non-negotiable.

3. B2B Interfaces

Disposable email services often lack capabilities for Business-to-Business (B2B) interfacing. This limitation can hinder the integration of these services into larger, automated testing suites, significantly limiting their usefulness in professional testing scenarios.

4. Uptime and Performance

Disposable email services are often slow and lack reliable uptime. These performance issues can introduce unnecessary delays into the testing process and create uncertainties around the reliability of test results. If an email was delayed, it can be hard to know if it was on your end, or theirs.

Advantages of Using Mailsac

Mailsac, as a dedicated email deliverability platform, provides a solution to these limitations and offers considerable advantages for professional QAs and software devs.

1. Enhanced Security

Mailsac prioritizes security, providing secure paid private inboxes and whole subdomains for testing.

You can test your application’s email functionality without risking sensitive data being leaked or public, or sold to a data broker.

2. Professional Business Agreements

Mailsac offers business-friendly terms of service, custom terms, P.O.s, multiple users, SSO and other features designed with the needs of professional QAs and software developers in larger companies with legal and security requirements. This provides a more suitable environment for business operations and testing.

3. Integration and functional testing

Mailsac provides powerful REST APIs, webhooks, and web sockets for integrating into CI/CD and workflows. Companies frequently integrate mailsac seamlessly into their automated testing suite. Using a consumer disposable provider often results in unexpectedly failed builds. Using a professional provider gives you comprehensive and efficient testing and enables continuous deployment.

4. Reliable Performance

Mailsac has high uptime and quick API and UI performance, ensuring a smooth and reliable email testing process. We believe performance is a feature.

5. Share test environment account email addresses

When you are testing a web application, you can use email addresses that are private to your Mailsac account to sign up for your app. Then share those inboxes with your teammates. For example, you may be testing a web app with two RBAC roles – administrator and readonly user. Each can have a unique mailsac email address. Your web app sends a sign-in link via email. All team members can access it (using mailsac’s multi-user or SSO feature). And since it’s not disposable email, the sign-in link to your app’s dev environment won’t be public.

While disposable email services may appear convenient, they come with considerable drawbacks for professional QAs and software devs. They can be against company policies because they may leak proprietary business information. Mailsac, with its robust features and focus on business needs, provides a far more effective solution for email deliverability testing.

QA Testing Email Deliverability using Mailsac: An Overview for QA Managers

Jeff P

The importance of Quality Assurance (QA) testing in software development and operations cannot be overstated. It ensures the product or system performs as expected, minimizing the risk of unexpected failures in production environments. A crucial aspect of QA testing involves testing email deliverability. This article will focus on how to use Mailsac, a leading tool in email testing, to execute this task effectively.

What is Mailsac?

Mailsac is a service providing temporary, “for-test-only” email addresses that can be used for testing and development purposes. Mailsac’s uniqueness lies in its capability to accept emails sent to any unique, auto-generated email addresses under its domain, thus eliminating the need for pre-generating email addresses or setting up a dedicated testing email server.

Why Use Mailsac for Email Deliverability Testing?

Email deliverability testing is vital to ensure emails are correctly dispatched from your application and are appropriately received by your users. Mailsac offers the flexibility to test various email formats and content, inspect the received emails, and verify they are correctly formatted and contain the correct data. This helps mitigate common issues such as emails being marked as spam, lost emails, or broken email formats.

How to Perform QA Testing with Mailsac

Let’s delve into the steps to conduct QA testing for email deliverability using Mailsac.

Step 1: Set Up a Mailsac Account

First and foremost, you need to create a Mailsac account. Visit the Mailsac website and follow the sign-up instructions.

Step 2: Send Emails to Mailsac

Next, send emails from your application to any addresses on the mailsac.com domain. Mailsac is designed in such a way that you don’t need to pre-generate the email addresses. Just decide on the address you want to use and send the email. The inbox will be created automatically when an email is received.

You can send the emails from anywhere, too – personal or work addresses, fake senders, CLI tools, software applications – without a separate sending gateway.

Step 3: Check Email Deliverability

After sending the emails, you can verify their delivery in the Mailsac interface. Here, you can view the received emails, check their contents, and confirm they are correctly formatted. Mailsac also enables you to check if attachments are included correctly using the Unified Inbox or API, and whether the links and images in the email are functioning properly.

Advanced Testing with Mailsac API

For more sophisticated or comprehensive testing, Mailsac offers a robust JSON REST API and Web Socket API. This empowers you to automate the process of sending emails, checking their delivery, and verifying their contents. These API calls can be integrated into your automated testing suite, enabling you to conduct in-depth email deliverability tests as a part of your regular testing process.

Wrapping Up

Mailsac presents a powerful and versatile method to test email deliverability as a part of your QA process. It allows you to send emails to any address on its domain, and the inboxes are created automatically when an email is received. By integrating Mailsac into your QA testing, you can significantly enhance the quality and reliability of your email notifications, thus offering a better user experience. Sign up and start receiving email in seconds.

Unveiling Mailsac’s New API Endpoint Feature: Inbox Filter

Jeff P

A look at filtering email messages with the Mailsac API

Mailsac has rolled out a new API endpoint feature, dubbed “inbox filter.”

It limits email messages using the to, from, and subject fields. Say goodbye to the conventional OR logic of /api/inbox-search and embrace the power of logical AND.

The Inbox Filter Endpoint: Technical Breakdown

The /api/inbox-filter API endpoint accepts the following optional query parameters:

  1. andSubjectIncludes: Filter messages by text included in the subject line
  2. andFrom: Filter messages by text included in the FROM envelope
  3. andTo: Filter messages by text included in the TO envelope

This endpoint delivers results only when at least one query condition is specified, otherwise, expect a 400 error. The response is capped at 100 results, so adjust your query or prune your account accordingly.

JavaScript Unit Test with Mocha and Axios

To illustrate the usage of the /inbox-filter API endpoint, here’s a JavaScript unit test using Mocha and Axios:

const axios = require('axios');
const assert = require('assert');

describe('Inbox Filter API Endpoint Test', () => {
  it('should return filtered messages', async () => {
    const mailsacApiKey = 'your-api-key-here';
    const endpoint = 'https://mailsac.com/api/inbox-filter';
    const andSubjectIncludes = 'Important';
    const andFrom = 'johndoe@example.com';
    const andTo = 'janedoe@example.com';

    const response = await axios.get(endpoint, {
      headers: { 'Mailsac-Key': mailsacApiKey },
      params: { andSubjectIncludes, andFrom, andTo },
    });

    assert.strictEqual(response.status, 200);
    assert.strictEqual(Array.isArray(response.data.messages), true);
    response.data.messages.forEach((message) => {
      assert.strictEqual(message.subject.includes(andSubjectIncludes), true);
      assert.strictEqual(message.from[0].address.includes(andFrom), true);
      assert.strictEqual(message.to[0].address.includes(andTo), true);
    });
  });
});

Looking for a robust email testing solution that can simplify your workflow and improve efficiency? Look no further, friends. Mailsac offers powerful features like this new inbox filter API endpoint and many more, tailored to meet the needs of developers, testers, and businesses alike. Discover the benefits of Mailsac today and elevate your email management game. Try Mailsac for free or learn more about our plans and join our growing community of satisfied users at forum.mailsac.com.

Streamlined Mailsac Updates: Enhancing Email Testing with UI, Performance, and Security Improvements

Jeff P

Get ready for some boring news. At Mailsac, we release a steady stream of updates – week by week, all year long – with no fanfare. We avoid breaking changes wherever possible. Most of our customers have Mailsac integrated deeply into their CI/CD and QA processes. Breaking your build is not cool.

Here’s a recap of improvements we made over the past few months:

  • Updated UI interfaces for managing things like API keys, email addresses, and more. We’re modernizing the main website for security and ease-of-use. Stay tuned for a lot more of this.
  • Additional “Copy text” buttons and cross-browser compatibility improvements.
  • POP3 server fixes to some edge cases around Windows line endings.
  • Over 50 security updates to dependencies which are (hopefully) completely transparent to you.
  • Performance and security upgrades to our underlying servers.

Over time, SaaS services add too many features, getting clunky and slow user interfaces. At Mailsac we’re not beholden to venture capital or shareholders. Customers have our full attention. You pay us for dev and QA tools to help test email. Thus we prioritize speed and singleness of purpose to deliver you those tools. We want to be extremely helpful, yet stay out of your way.

If you’ve ever got issue with Mailsac, paying customers can contact us at support@team.mailsac.com. A human being will reply pretty quickly, getting you unblocked. (For non-paying users, please ask for help at https://forum.mailsac.com )

The Hidden Costs of Neglecting Email Testing for Your Business

Jeff P

As a business manager in a software company, you understand the importance of effective communication with your customers. Email remains a critical channel for connecting with your audience, but many organizations overlook the importance of thoroughly testing their email sending capabilities. Failing to test your outbound email systems can lead to embarrassing mistakes, decreased customer satisfaction, and even regulatory consequences in certain industries. In this blog post, we’ll explore the downsides of neglecting email testing and explain why it should be a priority for your business.

Sending Duplicate or Incorrect Emails

One of the most common issues businesses face when not testing their email sending capabilities is accidentally sending duplicate or incorrect emails. This can happen due to software bugs, incorrect configuration, or simple human error. When customers receive multiple copies of the same email or emails containing inaccurate information, it can create confusion, erode trust, and damage your brand reputation. By investing in proper email testing, you can catch these errors before they reach your customers.

Personalization Mistakes

Email personalization is essential for connecting with customers on a deeper level. However, without proper testing, you may encounter issues like incorrect name insertion or the use of outdated customer data. These mistakes can make your emails appear unprofessional and impersonal, undermining your efforts to build strong relationships with your customers. Email testing can help ensure your personalization efforts are successful and your customers feel valued.

Missing Critical Notifications

When your email sending capabilities are not tested thoroughly, there’s a risk of failing to send important notifications to customers. This can include transaction confirmations, account updates, or even password reset emails. Delayed or missing notifications can lead to customer frustration, increased support requests, and potential security issues. Implementing a comprehensive email testing strategy can help ensure your customers receive timely and accurate notifications.

Deliverability Issues

Email deliverability is crucial for ensuring your messages reach your customers’ inboxes. If you don’t test your email sending capabilities, you may encounter issues like high bounce rates, being marked as spam, or being blocked by email service providers. These problems can severely impact your email marketing campaigns and customer communication efforts. Proper email testing can help you identify deliverability issues and address them before they harm your business.

Regulatory Consequences

In certain industries, companies are required to send timely and accurate notifications to customers, such as financial services or healthcare. Failing to meet these requirements due to untested email systems can result in regulatory consequences, including fines or legal actions. By prioritizing email testing, you can ensure compliance with industry-specific regulations and avoid potential penalties.

Conclusion

As a business manager, it’s essential to recognize the importance of thoroughly testing your email sending capabilities. Neglecting this critical aspect of your communication strategy can lead to various issues, including duplicate emails, personalization mistakes, missed notifications, deliverability problems, and regulatory consequences. By investing in proper email testing, you can ensure your messages are accurate, professional, and effective in reaching your customers. This will ultimately contribute to increased customer satisfaction and a stronger brand reputation.