Pros:

This product is based on open source.
main feature is for encrypting your mail box and protect your data.
Easy to use as a Email product.

Cons:
None I can see

Pros:

- Simple to use.

- Open Source.

- Custom domain.

Cons:

- Without third party integration.

- Limited features.

- It's not easy to recover the account.

Pros:
- Runs on various platform such as Android, iOS, Web so it's easy to use for everyone.
- Open source -it means everyone can know its source code and developers can contribute to its development
- Available in many languages which enables users around to use it easily.

Cons:
- If don't want to deploy by yourself you have to pay Tutanota in order to use it for your business

**Pros:** Open source email service to not allow big companies pry on your private emails. Seems a bit like Proton.
**Cons:** 1 GB is surely not enough for current devs. 

Pros:

Easy to use eamil service that supports encryption.
Open source/transplant for what you're using.
App supports different platforms.

Cons:
None I can see

Pros :

- It provides good security because of the encryption.
- It can be improved/revised for a better performance.
- It offers a free storage of upto 1 GB which is totally good for users.
- Available for common Operating Systems (Android and IOS)

Cons :

- The free storage is not enough for users who use their email a lot.

*Pros*: 
* Being an open source platform with free services is worth opt in for.
* A big plus for the end-to-end encryption.
* Availability on various platforms for use i.e. web, android and ios.

*Cons*:
* Having to limit the free storage space to just one gigabyte. 

Pros:
* It's open source (so you can get trust more easily because you can see and analyze the code)
* Available on iOS and Android
* Privacy (Encryption ensures that no one can read your sent emails)

Cons:
* 1 GB of storage, but maybe this fits most peoples needs

Pros:

* Beneficial and reliable security mail service
* What something great here is encrypted, which means it is free for all
* The system is user-friendlyand good privacy protector
* A brilliant alternative to any other mails.
* Available on Android and iOS
* There is spam protection and custom spam filters.
* With two-factor authenticator

Cons: 
* 1 GB storage is pretty small
* Doesn't have auto-response

Pros :

- It is an open source project where people can see the codes and can contribute if there's something wrong or should be fix
- It is a cross-platform email service
- It will encrypt your email data which is secured
- It has a free service for everybody to try and test it

Cons :

- The free service is only 1 GB which is small for an email services.

Pros:
* Encrypted mail service
* Easy to use
* 1 GB of storage
* Open source, public available codebase

Cons:
* None yet

**Pros**: 
- Initial 1GB of storage is really helpful.
- Apps for both Android and iOS.
- Streamlined support for receiving/sending with other clients
- Ability to use own domain names.
- An option for premium plans that allows expansion of storage
- Encryption/Opensource

**Cons**:
- Needs PGP encryption for better security.

Pros :

- It adds security to your files as it is encrypted.
- It is readily available to different kinds of operating systems.
- Anyone can contribute their best ideas because it is Open-Source.

Cons :

- The Gigabyte storage seems to be easily consumed.

Pros:
- Great alternative to mainstream email service which is open source.
- Very compatible to Android and iOS devices.
- Application is free with high level encryption and confidentiality to the user and its respective contacts.

Cons:
- None for this great app.

Pros:
data privacy
End to End encryption
Android and iOs app
open source

Cons:
Little memory space
There are companies that offer the same and may be better (for example: protonmail)

Could someone highlight the differences between this and protonmail?

Pros:
- It could be used on different operating systems, the app for example on Android and iOs
- It is open source so everyone can see how it works and may improve the code

Cons:
- none I can actually see

Pros:
Intuitive design, new tech.
Tutanota offers an open webmail service that is very easy to use.
All the encryption is taken care of automatically in the background.

Cons:
None I can see

Pros: 
Governments can't snoop over it's citizens
Encryption gives more power to the user

Cons: 
Might be used for illegal purposes, since there's no monitoring

Pros :
* It is an open source email service which means people can use it for free
* It can be an alternative email service
* It helps encrypt your data which makes it more secured
* Available on iOS and Android devices

Cons :
* Free version has a limited storage of 1 GB which i think is too small. You need to purchase on the upgraded version to avail bigger storage space

Pros:
* Ensured security of all data in users email which is the main concern of every users.
* It’s for FREE.
* Open Source
* Available for Andriod and iOS.

Cons:
* Free version has 1 GB Storage which is very limited. Users need to purchase to attain higher/ bigger storage.

Pros:
- Secure electronic communication facility.. 

Cons:
- Limited storage space

Pros
* Biggest advantage will be its end to end encryption as it is something we want today with data brokers doing their best to steal the data.
* Easy to use and simple graphical user interface is also appreciable.
* Security of data is the thing that is focused on mainly
* Provide a support for business organisations with different versions.
* It is an open source project will be free of cost forever

Cons
* Purchasing for extra storage and other features is something we can work on.

Pros:

Open source project
Tutanota automatically encrypts all your data on your device. Your mails as well as your contacts stay private.
Can easily communicate with any of your friends end-to-end encrypted. 

Cons:
none

Pros:
- Open Source (hooray!)
- Encrypted service
- Available for both Android and iOS

Cons:
- None that I can see

Great hunt!

Pros;
1. Being an open source product, it gives it more chance of growth and improvement through users suggestions
2. It gives highly reputable companies the opportunity to communicate privately to their clients.
3. It is fast and more flexible than the existing mail services. 
4. Being a cloud app, your data is secured and can't get lost. 

Cons:
1. The Storage allowed would limit users from picking it over other mailing service. 
2. The premium prices are high compared to the privacy service they are offering. 

Pros:
Open source
the encrypted email makes this the ultimate email service for those that want privacy
offers free services with the ability to upgrade
can be used on browsers as well as the app
works with iphone and Android devices

Cons
none that I can see

Pros : 
* Open source 👌
* Encrypt your email data which is secured
* compatible for both platforms ios & Android
* end to end encryption provide effective users privacy security, it is the most important thing today.
* Security of data is the thing that focused mainly

Cons : 
Storage is limited

Pros:
- The best thing about this is security. No one wants their private emails and messages' information being leaked.
- Of course, it is FREE and open to everyone who would like to improve the system
- Compatible with both iOs and Android.

Cons:
- The 1GB storage is quite small since today, almost all transactions are already done in emails. Paying for subscription fee would be costly

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Pros:
* Android & iOS
* Encryption (yaay, privacy)
* 1 GB storage for mail should be sufficient for most people
* Open source

Cons:
* None so far

Pros:

Open source service
Free to use
Encrypted and can be used as extra email service
Available for android and IOS

Cons:

None that I can actually see

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Pros:
* it automatically encrypts all the data on your device
* open source that enables security experts to check 
* forever free
* intuitive design and easy to use
* can be use with any web browser and also supports Android and IOS
Cons:
* 1 Gb is not enough storage for me

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Pros:
- Good for people not named Hilary Clinton
- Open Source, so people will always be working on making it better
- Also has mobile apps for their service.
- 1 GB Free Plan (Ok for basic text documents)


Cons:
- Limited storage to start with (Could be ok for some people)

Congrats on your first hunt @geekgirl!

Pros:

* It's Opensource. It's a community involvement in terms of its development.
* It's secure and cares about its user's privacy and confidentiality

Cons: A lot of them

* It's very limited in terms of its database capacity per user.
* And because of that, people will have the option to become a premium user or a pro user offered with much more bigger storage for data
* Not the first end-end encryption type of an email service. Sounds like Protonmail...

Good

Pros:
* Provides encrypted mailbox for free.
* It's an open source and forever free.
* It has a strong encryption type service
* You can easily communicate with any of your friends end-to-end encrypted. 
* It is available in web browsers so that you can view your mailbox anywhere and it is available in mobile apps both Android and iOs.

Cons:
* Bigger storage is available only in pro version.
* Nothing more I can see at the moment

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This is something most useful and usable thing in daily life. Everyone using email service with a concern of "security".
Now that the solution 'Tutanota'.

Pros:-
- open source service, anyone can creatively improve the codes.
- more user attracted as it is open source software.
- compatible for both of Android and iOS platform.
- end to end encryption provide effective users privacy security, it is the most important thing today.
- simple UI make it user friendly.
- all that great advantages are for free.

Cons:-
- limited 1 GB storage space. You have to pay for premium or pro service for more storage space and more facilities. (Well it's logical.)