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FastMail VS Cert Decoder

Compare FastMail VS Cert Decoder and see what are their differences

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FastMail logo FastMail

Email, calendars, and contacts to highest standards of security, privacy and reliability.

Cert Decoder logo Cert Decoder

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.
  • FastMail Landing page
    Landing page //
    2023-07-22
  • Cert Decoder
    Image date //
    2025-03-22

Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.

FastMail

Website
fastmail.com
Pricing URL
Official FastMail Pricing
$ Details
paid Free Trial $3 / Monthly (per user)
Platforms
-
Edit details

Cert Decoder

Website
certdecoder.com
Pricing URL
-
$ Details
free
Platforms
Web
Edit details

FastMail features and specs

  • Privacy-Focused
    FastMail is known for its strong commitment to user privacy. They do not serve ads or sell user data to third parties, providing a more secure email experience.
  • Feature-Rich
    The service offers a variety of features such as email filtering, calendar integration, and contact management, making it a versatile choice for both personal and professional use.
  • Custom Domain Support
    Users can use their own custom domains with FastMail, which is particularly useful for businesses and advanced users.
  • Fast and Reliable
    FastMail lives up to its name by offering quick email delivery and a reliable, responsive user interface.
  • Support and Documentation
    FastMail provides robust customer support and has extensive documentation to help users troubleshoot issues and make the most out of the service.

Possible disadvantages of FastMail

  • Cost
    FastMail is a paid service, which might deter some users who are accustomed to free email services like Gmail or Yahoo.
  • Limited Free Tier
    Unlike some competitors, FastMail does not offer a free tier, meaning users have to commit financially from the get-go.
  • No E2E Encryption
    FastMail does not provide end-to-end encryption by default, which may be a drawback for users seeking maximum security for their communications.
  • Complex Interface for Beginners
    While feature-rich, the interface may be overwhelming for users who are not technically inclined or are new to email management.
  • Limited Integration
    FastMail may not integrate as smoothly with some third-party services and applications when compared to giants like Google Workspace or Microsoft Office 365.

Cert Decoder features and specs

  • User-Friendly Interface
    Cert Decoder is designed with a simple and intuitive interface that makes it easy for users to navigate and use the tool without requiring extensive technical knowledge.
  • Comprehensive Analysis
    The tool provides detailed analyses of certificates, including information about validity, issuer, encryption algorithms, and more, helping users understand their security certificates thoroughly.
  • Free to Use
    Cert Decoder offers its services free of charge, making it accessible for individuals and organizations without budget constraints.
  • Quick Processing
    The tool processes certificate information rapidly, providing almost instant results for users, which is crucial for time-sensitive tasks.

Possible disadvantages of Cert Decoder

  • Limited Advanced Features
    Compared to some paid alternatives, Cert Decoder might lack advanced features that are necessary for more complex certificate management and diagnostics.
  • Reliance on Internet Access
    Users need an active internet connection to utilize the tool, which can be a limitation in areas with unreliable internet service.
  • Privacy Concerns
    While using an online service to decode certificates, there can always be privacy concerns regarding sensitive data being uploaded to a third-party server.
  • No Offline Mode
    Cert Decoder does not offer an offline mode, which could be a drawback for users who require functionality without constant internet availability.

Analysis of FastMail

Overall verdict

  • FastMail is an excellent choice for users seeking a reliable, privacy-focused email provider with a range of features that enhance productivity and data security.

Why this product is good

  • FastMail is considered a good email service due to its strong privacy features, user-friendly interface, and reliable performance. It is an independent email provider that doesn't rely on ad revenue, which enhances user privacy. The service offers robust security measures, including two-factor authentication and PGP encryption support, making it a trustworthy option for users concerned about data protection. Additionally, FastMail provides useful organizational tools, such as custom folders, rules for sorting emails, and integrated calendars and contacts, which help users manage their communications effectively.

Recommended for

    FastMail is recommended for individuals and businesses who value privacy and security in their email communications, as well as those looking for an ad-free, user-friendly email service with solid organizational tools. It's particularly suitable for users who require reliable performance and are willing to pay a subscription fee for enhanced features and privacy assurances.

Analysis of Cert Decoder

Overall verdict

  • Cert Decoder appears to be a free online tool for decoding and inspecting SSL/TLS certificates, CSRs, and related cryptographic data, making it useful for quick, no-install certificate analysis, though it should be used with awareness of general web tool privacy considerations when handling sensitive certificate data.

Why this product is good

  • Provides quick, browser-based decoding of certificates without needing to install software
  • Useful for troubleshooting SSL/TLS certificate issues on the fly
  • Simple interface aimed at both technical and semi-technical users
  • No cost to use for basic certificate decoding tasks

Recommended for

  • System administrators needing to quickly verify certificate details
  • Developers debugging SSL/TLS configuration issues
  • IT support staff troubleshooting website certificate errors
  • Students or professionals learning about certificate structure and encoding

FastMail videos

+ Add

Fastmail - Email Service Review

Cert Decoder videos

No Cert Decoder videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to FastMail and Cert Decoder)

FastMail

Cert Decoder

Email
100 100%
Email
0% 0
Decoding
0 0%
Decoding
100% 100
Hosted Email
100 100%
Hosted Email
0% 0
Monitoring Tools
0 0%
Monitoring Tools
100% 100

Questions & Answers

As answered by people managing FastMail and Cert Decoder.

What's the story behind your product?

Cert Decoder's answer:

I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.

Which are the primary technologies used for building your product?

Cert Decoder's answer:

certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server

How would you describe the primary audience of your product?

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

Why should a person choose your product over its competitors?

Cert Decoder's answer:

Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.

Who are some of the biggest customers of your product?

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

User comments

Share your experience with using FastMail and Cert Decoder. 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 FastMail and Cert Decoder

FastMail Reviews

The Top 4 ProtonMail Alternatives
Fastmail is a great alternative to Protonmail because of its focus on security, but unlike other offerings, it doesn’t provide a free option. Fastmail’s approach to emailing will feel familiar to users of Gmail which can be beneficial with its ease of use. Their offerings focus on the personal and business side of email use with three tiers on each side.
Source: blog.superhuman.com
The BEST Email Hosting Providers for Small Business in 2021
By choosing FastMail, the host will allow you to email from an address that matches your business website. You can create up to 100 your own domains ([email protected]) and 600 aliases ([email protected]). FastMail will also allow you to use one inbox to send and read mail from every alias and if you encounter some problems, FastMail will deliver great assistance from their...
Source: www.thesearchengineshop.com
Moving away from GMail
Fastmail was my top choice, from a usability perspective and I read many good reviews of it. It ticks all the boxes, at a cost of 50$ per year. I evaluated it a year ago, but because the construction of my house started, I put the email migration project on hold.
Source: rolisz.ro
Have a private email account
Use Fastmail, Posteo, Mailbox, or any similar service where you actually pay $1-$3 per month and in return get a completely ad-free spam-free wonderful email experience.
Source: sivers.org
15 Best Email Hosting for Small Business (2019)
In case you want to migrate away from FastMail or make backup of your data, you can download all your data on FastMail.
Source: blog.runcloud.io

Cert Decoder Reviews

We have no reviews of Cert Decoder yet.
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Social recommendations and mentions

Based on our record, FastMail seems to be a lot more popular than Cert Decoder. While we know about 51 links to FastMail, we've tracked only 1 mention of Cert Decoder. 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.

FastMail mentions (51)

  • 📨 Building your Email API with Fastmail for free!
    Have you ever wondered how to host an email system without paying even a single penny? Well, this blog will guide you through the process of building your own email system on Node.js with the integration of fastmail.com. - Source: dev.to / over 2 years ago
  • Staying logged in/remembering cookies in specific containers only?
    Hi, I have recently added a few exceptions to cookie auto-deletion, e.g. To ensure my email provider (fastmail.com) remains logged in. However, for other parties who I do not trust, such as Google, I don't want to remember cookies 99% of the time. Source: about 3 years ago
  • Domains and Email hosting
    Used to use MXRoute but noticed emails to Gmail and other providers were not getting through. Switched over to Fastmail highly recommend it. Source: about 3 years ago
  • Chrome extension for managing your masked emails is now available!
    I too use a catchall address... And I'm always disappointed when Fastmail doesn't take all of the addresses that I get email sent to, and turn them into masked emails automatically! I guess masked emails are for people who dont have a custom domain and want to use their fastmail.com address, with some kind of email forwarding. Source: about 3 years ago
  • Looking to change hosting services, forget $5 fees!
    I'm personally partial to fastmail.com for a conventional business email provider that respects privacy and has a common sense 'good enough' configuration for the vast majority of small businesses. Source: over 3 years ago
View more

Cert Decoder mentions (1)

  • Banana.dog back from the dead
    Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago

What are some alternatives?

When comparing FastMail and Cert Decoder, you can also consider the following products

ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.

Zoho Mail - Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.

Gmail - Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

Tutanota - Get your encrypted mailbox for free.

Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Posteo - Web- and IMAP-based email service. 2GB cost 1€/month.

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