Comparison

CUNCR iGreen vs Encrypted Email

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CUNCR iGreen

Features
Read full description

i-Green Carbon Footprint Offsetting In our daily living we are producing carbon every day. If we drive an 12000Km per year we are producing an average of 1890Kg of carbon per year. If we take a flight from Tokyo to Paris, we are generating 696Kg of carbon. If we are a family of 3 and live in an apartment in New York, we are producing 13,770Kg of carbon annually. The best way to achieve carbon neutrality and mitigate climate change is by changing our lifestyles as individuals and in our business and industry practices so we produce less carbon, but second-best practice is to offset the carbon we produce. This can be done by industrial means or with the nature-based solutions of turning carbon to oxygen. Simply by planting trees in a reforestation or community setting. This is what the CUNCR, Youth Climate Ambassadors YCA do around the world. The tried-and-tested practice of reforestation, afforestation, and restoring mangroves and marshlands, as the nature’s solution, as the best way to offset carbon and help biodiversity. AIR TRAVEL FORMULA CUNCR uses the UN-International Civil Aviation Organization ICAO methodology to calculate your CO2 offset. The formula considers the distance between departure and destination airports, the average number of seats based on the aircraft types, average fuel consumption and load factors and whether economy or business class, and if the flight is round trip. Based on these parameters carbon emissions and offsets are calculated. CO2 per passenger = 3.16 * (total fuel*pas-to-freight factor) / (number of seats*pas load factor) HOUSEHOLD FORMULA CUNCR primarily uses the USA Environmental Protection Agency EPA standards and averages for its modeling to calculate your household carbon offset. We further divide the 193 countries of the world to different categories according to their income per capita, based on World Bank data, to measure their impact more realistically on emissions. LAND TRAVEL FORMULA CUNCR uses and adaptation of the USA Environmental Protection Agency EPA to calculate land travel emissions. We further divide the vehicle types to different sizes we also take public transportation, trains and buses into consideration. How precise are these formulas, and what is your impact? Calculating carbon generation because of a human activity is extremely complex. For example, in a flight many variables such as direction of travel, the type of aircraft, the wind factor, the load factor and the class of your travel, all impact the CO2. In offsetting, the species of tree being planted, in what region, the age of tree and the season when measuring is performed, and what is the life expectancy of the tree all affect sequestration calculations. With this complexity, you should consider your contribution as a donation rather than the precise modeling of your footprint. We will continue to improve our formulas and rest assured that your money goes a long way in both CO2 conversion to oxygen, but also your donation also supports the youth in the ground. The YCAs will in turn provide youth employment and training, UN Sustainable Goals SDG awareness, and activism in support of other local youth and indigenous people, to become the future guardians of our planet. Triple win: you go green, the youth benefit, and the planet breaths. About US CUNCR is an independent thinktank focused on the UN in its dealings with the global challenges, promoting the constitutionalization of the UN and of international law, with the aim of legitimizing global governance, including governance of climate, and affirming the global rights of "We the Peoples". The Youth Climate Ambassadors, YCA, inspired by CUNCR, are a network of youth climate activists from different corners of the world acting in unison, planting trees, educating youth, and building a future for a sustainable planet and good global governance of the climate. CUNCR is an international non-profit and contributions in your country may be tax-deductible.

About

Encrypted Email

This app provides a secure and private email service with integrated cloud storage, calendar, and contacts. It offers end-to-end encryption and password-protected emails for enhanced privacy. Ideal for individuals and businesses seeking a secure communication and collaboration platform.

Highlights
  • OpenPGP encrypted emails
  • Password-protected emails
  • Integrated cloud storage (Drive)
  • Shared calendars and contacts
  • Workspaces for collaboration
  • No tracking or ads
Features
Read full description

Mailfence is an encrypted email service that offers a secure and private Email suite with Drive and Workspaces. Restore Privacy says : "Mailfence is a fully-featured alternative to Gmail. Whether you are a regular privacy-conscious user or managing a business team, Mailfence can cater to your needs." The Mailfence app consists of different tools all integrated in an easy to use interface. Messages: • Create a @mailfence.com or @mf.me email address • Send and receive emails • Send and receive OpenPGP encrypted emails • Send Password-protected Emails to anyone • Switch between multiple mailboxes • Keep your inbox tidy and clean with folders, labels and swipes • Receive new email notifications • Your Mailfence email account can also be accessed in POP, IMAP & SMTP via third party email clients Drive / Cloud Storage: • Access your private and shared documents • Manage them with folders and labels • Share your documents with Mailfence users via workspaces / groups • Share documents by making them accessible publicly • Your Mailfence Drive can also be accessed in WebDAV via third party clients Calendar : • Access your private and shared calendars • Create and accept meetings • Layer different calendars • Share your Calendar publicly • Get reminders by email • Your Calendar can also be accessed through CalDAV or ActiveSync via third party clients Contacts / Address book : • Access your private and shared contacts • Manage your contacts with labels and comments • Search in your private and shared address books • Access your mailing lists • Your Mailfence Contacts can also be accessed through CardDAV or ActiveSync via third party clients Why use Mailfence? • No tracking : No ads, no spams, no trackers, no solicitations, no backdoor, free from government surveillance. • Privacy protection : State of the art security features protect your email privacy at all times. • An integrated suite of tools : Messages, Documents, Groups. • Legal protection : Belgian privacy protection law is strong. Only local judges can request information and they must have a court order. It rarely happens. • Workspaces : Share mailboxes, drives and collaborate in shared workspaces. Advanced sharing rights managed by group administrator. • Interoperable : User decides whether to encrypt emails or not. Interoperable with any other OpenPGP encrypted email. • Standard protocols : Interoperability with standard clients : Outlook, Mac Mail, Thunderbird,…. • Individual or teams : Ideal for individual users or professionals. Mailfence in the press: • In an article Kim Komando of Fox News wrote about Mailfence, "It's a great option for small business owners and ordinary users alike." • Lifehacker wrote, "Mailfence is a solid choice with office apps, it's more email- and calendar-focused compared to the comprehensive app suite of Kolab Now." • The ProPrivacy's Ray Walsh mentions in his article “Mailfence is a solid and easy-to-use email provider that is ideal for beginners." • Restore privacy's Sven Taylor wrote, “Mailfence has all the features and options that you are likely to need, whether you are looking to manage the mail for an entire organization, or just want great service for personal use” • Lifewire writes : “Mailfence is a security-centric email service that features end-to-end encryption to ensure nobody but you and your intended recipient can read your messages." For more information, check : • site : https://mailfence.com • support site : https://kb.mailfence.com • blog: https://blog.mailfence.com

Screenshots

CUNCR iGreen3 screens
Encrypted Email4 screens

Verdict

The call

The clearest difference is update cadence: CUNCR iGreen at monthly against Encrypted Email's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CUNCR iGreen ships an update monthly, Encrypted Email every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 9 level
CUNCR iGreen versus Encrypted Email: the parameters behind the verdict, then further details
ParameterCUNCR iGreenEncrypted Email
PriceFreeFree
Rating—3.9 (111 ratings) — better
Positive reviews—41.5% of reviews
Number of ratings—111 — better
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better13.4
Further details — not scored
Size136 MB34 MB
Age rating4+4+
DeveloperCenter for United Nations Constitutional ResearchContactoffice Group

Bugs and requests

CUNCR iGreen

Not enough reviews yet to summarise bugs or requests.

Encrypted Email

Reported bugs

15 issues
  • Unable to reach servers on phone app
  • App scrolls text off screen while typing
  • Emails going to spam folder
  • Login failures on iOS
  • App doesn't recognize login/password after update
Show 10 more
  • Account deactivated too quickly
  • Cannot sign up with valid recovery email
  • Account hacked
  • Cannot delete account
  • iPad app glitch: page scrolls up while typing
  • Notifications not working
  • Cannot send emails with attachments
  • Spam notifications even for spam emails
  • IMAP connectivity issues
  • App logs out from all devices frequently

Requested features

12 requests
  • Allow account creation with VPNs/privacy tools
  • More specific error messages during signup
  • Grace period and human review for signup false positives
  • Ability to mark emails as 'not spam'
  • Folder creation within the app
Show 7 more
  • Improved dark mode rendering
  • Sender icons
  • Landscape mode on iOS
  • Printing from mobile app
  • Calendar and notes integration in mobile app
  • Block sender feature
  • Ability to add other email providers

In-app purchases

None

CUNCR iGreen

No in-app purchases

None

Encrypted Email

No in-app purchases

Questions

Is CUNCR iGreen free?
CUNCR iGreen is free to download, with no in-app purchases.
Is Encrypted Email free?
Encrypted Email is free to download, with no in-app purchases.
Do CUNCR iGreen or Encrypted Email have ads?
Neither CUNCR iGreen nor Encrypted Email shows ads.
Which is updated more often, CUNCR iGreen or Encrypted Email?
CUNCR iGreen ships an update monthly, and Encrypted Email every 2 months. Most recently, CUNCR iGreen was updated on October 25, 2026 and Encrypted Email on October 24, 2026.

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