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computer science

Kolab Now

Kolab Now is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kolab Now rather than just read about it. In short: Kolab Now is a web-based email and groupware service, based completely on free and open-source software. It is owned and operated by Kolab Systems AG and was formerly known as MyKolab.

Kolab Now — main illustration
Kolab Now — illustration

Key takeaways

  • Kolab Now belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Kolab Now to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Kolab Now from memory before moving on to harder problems.

Reference excerpt

Kolab Now is a web-based email and groupware service, based completely on free and open-source software. It is owned and operated by Kolab Systems AG and was formerly known as MyKolab.

Kolab Kolab Systems AG is the company behind the Kolab groupware suite. Founded in 2010 in Zürich, Switzerland, Kolab Systems has taken the place of the Kolab Konsortium which initially provided Kolab services primarily in German speaking areas from 2004 to 2010. It is also the largest contributor to the Roundcube web mailer project. The company's board of directors is composed of CEO Georg Greve, the founding president of Free Software Foundation Europe, CTO Jeroen van Meeuwen, Michael Moser, CCO and co-founder of Switzerlands leading Open Source Integrator Adfinis AG, and Philipp Koch, co-founder of Swiss hosting company Nine.ch.

Background Kolab Now, under the original name "MyKolab", was launched in January 2013 as a public beta release and became fully available later that year on August 1, as a paid service. After documents detailing United States and British government mass surveillance programs like PRISM and Tempora were leaked by Edward Snowden in May 2013, US-based companies Lavabit and Silent Circle, under pressure of government agencies, decided to shut down their email services rather than run the risk of having to disclose personal data of their users. In turn, Pamela Jones, author of now-defunct legal site Groklaw, revealed her use of MyKolab in her farewell post. Jones' endorsement increased demand for MyKolab. Based outside of the United States, Kolab Systems received media attention as one of the few and most secure alternatives still in operation.

Privacy of customer data Hosted in Switzerland, Kolab Now claims the benefit of strict privacy laws; it uses exclusively free or open source software, guaranteeing transparency. Because the service is subject to the national laws of Switzerland, Kolab Now states that there will be no access to a user's data by third parties without a duly authorized warrant issued by a Swiss judge. It is also stated in the terms of service that only the minimum of logs, necessary for debugging and improvement of the service, is kept.

Requests from government agencies Like any company, Kolab Now can be obliged to provide access to lawful interception requests. However, the Swiss authorities are generally reluctant to make such requests for access, and the government publishes anonymised statistics of all such lawful interceptions along with the rationale. As of 1 September 2015, Kolab Now reports having granted only one request from a government agency for data concerning a customer, and they note that this was an "administrative request", i.e. a request for information about a customer rather than a request for access to the customer's data. Kolab Now received two further requests but denied them because they came from an agency with no jurisdiction in Switzerland (both were from U.S. local police). In 2012, in all of Switzerland, there were only 20 cases of real-time internet wire-tapping and a further 26 for retroactive communication meta-information. Swiss Federal Intelligence Service traditionally have no mandate to operate within the country. A controversial revision of the law, effective 1 September 2017, has recently given them wider license, in particular wholesale monitoring of cross-border traffic. According to Kolab Now, not much will change for its customers, however.

Email encryption Kolab Now chose not to provide server-side encryption, and recommends using Kontact or Mozilla Thunderbird with Enigmail for proper end-to-end encryption. With server-side encryption, the encrypted data, the key, and the passphrase would need to pass through the web interface and be available on the server. Holding all three, the provider would have access to all the data despite the encryption.

Account types Kolab Now offers 2 types of accounts: Individual and Group manager accounts.

Individual account It is aimed at the individual who wishes a more secure and private alternative to free email services, with full groupware functionality. There's the option of a Lite version, which offers the email service only and do not include the groupware synchronisation feature. Standard storage size for this account type ranges from 2 up to 100 GB, with cost incurring accordingly.

Group Manager account This account type provides the customer with an administration login, used purely to set up the actual groupware account within a domain under the customer's control, and to administrate users existing within that domain. It is also possible to use an own SSL Certificate for that domain. Cost is incurred per user in a similar fashion to the individual accounts.

Features

Synchronisation with mobile devices The ActiveSync option allows to synchronize emails, contacts, events and tasks from Kolab Now to a mobile device. This works with all devices that support ActiveSync, such as Android, iPhone or Blackberry Z10. Alternatively, it is possible to use CalDAV and CardDAV capable clients to synchronise data.

Native desktop client for all platforms The Kolab Client runs on all modern operating systems such as Linux, Windows and MacOS. It supports different applications such as Mail, Address Books, Calendars, ToDo Management, Journals, Notes and offers many detailed features for each of them. It is based on Kontact and uses the Qt Technology to be fully portable.

Server-side mail filtering It is possible to define the criteria for emails to be filtered into different mail folders. The filtering will happen on the server right after the mail is received. This way emails are the same on all devices. Users can edit the filters as SIEVE scripts directly.

Free/Busy Information for Planning Allows to see whether the participants of events are free or busy without revealing any information about what they are doing during these times. This allows to schedule appointments and ensure that everybody is able to participate. Other available features:

Threaded mailview Task management File storage Customisable webclient Set up multiple identities Multiple calendar folders and views

Payment and pricing Kolab Now currently supports PayPal and Bitcoin as well as credit card as payment methods for monthly subscriptions and wire transfer for yearly payments only. The current monthly price for individual accounts with standard groupware functionality is 8.99 CHF, and for the email-only version, 4.55 CHF.

… excerpt ends here. Continue reading the full article.

Illustrations

Kolab Now illustration

Worked examples

Example 1 — a first encounter with Kolab Now

Start with the simplest possible case. Write down what Kolab Now claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kolab Now before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kolab Now ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kolab Now

In research
Kolab Now appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Kolab Now in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Kolab Now is common in secondary-school and first-year university syllabi. It links to neighbouring topics Email clients, Free groupware, Free software for cloud computing, so understanding it makes those chapters shorter.
In everyday life
Look for Kolab Now outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Kolab Now in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Kolab Now means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Kolab Now out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kolab Now in simple terms?

Kolab Now is a web-based email and groupware service, based completely on free and open-source software. It is owned and operated by Kolab Systems AG and was formerly known as MyKolab.

Why does Kolab Now matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kolab Now?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kolab Now.

Tags

  • Email clients
  • Free groupware
  • Free software for cloud computing
  • Privacy in the United States
  • Privacy of telecommunications

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