AlternativeTo Logo
K-9 Mail icon

K-9 Mail

Open source Android email client with support for multi-folder sync, keyboard shortcuts, and more.

  • Android
  • Android Tablet
  • F-Droid
Avg rating of 4.5 (18)| 14 comments

K-9 Mail Screenshots

Screenshot
Screenshot
Screenshot
(Beta version)
(Beta version)
 Suggest and vote on features

K-9 Mail Features

  1.  Ad-freeK-9 Mail doesn't contain any form of external advertising.
  2.  Multiple Account supportK-9 Mail support multiple accounts without the need to logout and login
  3.  Privacy focusedK-9 Mail is considered a privacy friendly alternative.
  4.  PGP EncryptionK-9 Mail supports PGP, an encryption system used for sending encrypted emails and files.

K-9 Mail information

  • Developed byK-9 Dog Walkers
  • LicensingOpen Source (Apache-2.0) and Free product.
  • RatingAverage rating of 4.5 (18 ratings)
  • Alternatives45 alternatives listed

Supported Languages

  • English

GitHub repository

  •  7,600 Stars
  •  2,316 Forks
  •  629 Open Issues
  •   Updated
View on GitHub

Popular alternatives

View all

Top K-9 Mail apps (extensions / mods etc)

View all

Our users have written 14 comments and reviews about K-9 Mail, and it has gotten 282 likes

K-9 Mail was added to AlternativeTo by JensKristian on and this page was last updated . K-9 Mail is sometimes referred to as k9mail, K-9, K9.

Comments and Reviews  Post a comment/review

 all • positive • negative      relevance • date
kivalogic
  
Top positive comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

Easy and reliable open source android email app, have been using this as a daily driver for the last couple of years and have no problems.

Show entire comment
3
android037
  
Top positive comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

Thrilled to see the new version. This is one of the largest tragedies in the FOSS world. Has over 5 million downloads in Play Store alone and many people do not install this from the Play Store.

Tragedy is they have transparent financing / fundraising listed and their goal is only $1000 Euro per week, They cannot even get that. Think about how much big tech makes and all their clients and then think about K9 insisting on remaining FOSS. With how many people use it, if even 4000 of them gave just 1.25 Euro / Per Month, that would hit their funding goal. As is, from the site and GitHub page, looks like team of 4 with 1 guy doing bulk of work, few others rounding out edges, and some others in FOSS community assisting here and there. Go look at their GitHub page and look at what their 1 person has resolved in the past couple months. Fairly sure he could have cushy job at big tech company at this point.

All the negatives are largely due to funding, honestly, I wish they keep it FOSS, but put in like a $3 buy button to show your apprecation and you get a little badge. One other FOSS company, little larger does this. All their stuff is free, you gain no 'pro' features if you donate, but you can easily do it and that is a one time thing, it comes up like a purchase in respective app store (they just release copies without that option in places like F-Droid).

With 6.0 released, can't believe they got something like that done given resources they have, it is great. If you do not know what FOSS project to support, seriously consider K-9 if you are a user, they have insisted on keep it FOSS, lets not lose it because no one donates (which often occurs because people assume others are donating to such a popular app, sometimes FOSS projects that get recognition have hard time funding because everyone assumes the other person is doing it).

Show entire comment
1
motleybits
  
Top negative comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

Works awesomely, until you need a subfolder in your Inbox (some email hosts insist), which K9 will not see at all. Unlike other apps, it seems K9 can only handle files OR subfolders, but not both.

Show entire comment
0
POX
  
Positive comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

I've been using FairEmail icon FairEmail for a while on Android, but I always go back to K-9 Mail, because it works like a charm and I really like the UI and the settings available. Best email client for Android available to this day.

Show entire comment
0
ajaqnovjbiiowbnwbxjaeeagk
  
Positive comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

Best android mail client out there. Simple and easy to use, although the search feature sometimes lacks accuracy

Show entire comment
0
mzs_47
  
Positive comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

Works well with Gmail, Yahoo, and Yandex. Plan to use it with Protonmail too. It has the nice feature of disabling all email notifications, just that this setting is per account and not global.

Show entire comment
0
jamesmlowe
  
Positive comment ago
Copy a direct link to this comment to your clipboard   
If this Review contains spam or other abuse, notify admins about it.   

I use it for a long time, the functionality is quite simple and global, just as it should, thanks!

Show entire comment
0
Show more comments
7 of 14 comments

Tags

  • Encryption
  • Email Client
  • email-signature
  • autocrypt

Recent user activities on K-9 Mail

AlternativeTo