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K-9 Mail VS ProtonMail Extension

Compare K-9 Mail VS ProtonMail Extension and see what are their differences

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K-9 Mail logo K-9 Mail

K-9 is an opensource email client making it easy to chew through large volumes of email.

ProtonMail Extension logo ProtonMail Extension

Unofficial webextension for ProtonMail
  • K-9 Mail Landing page
    Landing page //
    2023-07-23
  • ProtonMail Extension Landing page
    Landing page //
    2023-08-24

K-9 Mail videos

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K-9 Mail Review

More videos:

  • Review - K-9 Mail App Review
  • Review - K-9 Mail - Eine freie Mail-App für Android

ProtonMail Extension videos

No ProtonMail Extension videos yet. You could help us improve this page by suggesting one.

+ Add video

Category Popularity

0-100% (relative to K-9 Mail and ProtonMail Extension)

K-9 Mail

ProtonMail Extension

Email
84 84%
Email
16% 16
Email Clients
82 82%
Email Clients
18% 18
Calendar
100 100%
Calendar
0% 0
Email Service Provider
0 0%
Email Service Provider
100% 100

User comments

Share your experience with using K-9 Mail and ProtonMail Extension. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, K-9 Mail seems to be more popular. It has been mentiond 4 times since March 2021. 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.

K-9 Mail mentions (4)

  • For the past 3 months in my spare time I was developing this list with Awesome Android Alternatives! Please check this out, you might find something useful, or maybe you can help me make it even better. Have an awesome day!
    Yes, of course you can. I am aware of this app but I have not yet fully tested it. I know about K-9 Mail too. Also not tested. Source: almost 2 years ago
  • For the past 3 months in my spare time I was developing this list with Awesome Android Alternatives! Please check this out, you might find something useful, or maybe you can help me make it even better. Have an awesome day!
    I agree because I need to test it. I am aware of K-9 Mail and FairMail though. Source: almost 2 years ago
  • Email send error javax.crypto.BadPaddingException: pad block corrupted
    I've rebooted quite a few times. Updated the app too. I don't use a VPN. I installed k9-mail to test and that works without problems. https://github.com/k9mail/k-9. Source: about 2 years ago
  • Gmail App Alternative focused on privacy?
    On Android the usual recommendations are FairEmail or K-9 Mail. Both are fully open source and privacy focused, it basically comes down to your personal preference. For them to work with your Google Account you will probably have to create an app password. Source: almost 3 years ago

ProtonMail Extension mentions (0)

We have not tracked any mentions of ProtonMail Extension yet. Tracking of ProtonMail Extension recommendations started around Mar 2021.

What are some alternatives?

When comparing K-9 Mail and ProtonMail Extension, you can also consider the following products

Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

ElectronMail - Unofficial desktop app for ProtonMail and Tutanota end-to-end encrypted email providers

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

Mailvelope - Mailvelope open source project. OpenPGP in your browser.

Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Mailbird - Mailbird is the best email client for Windows 7, 8 and 10

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