How to prevent deleted e-mails from disappearing permanently

Posted on: March 27th, 2023 by

Last week our support team reported interestingly some similar questions from unrelated users circling around the topic: “I accidentally deleted some e-mails. Can I get them back?”

As often in complex support situations, the answer to this question is: It depends.. 🙂

Users were pointed to this knowledge base note. This answered the questions, though with some confusion. In this post we will lay out the options.

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Incident Report: Various Types of Failure Symptoms

Posted on: March 3rd, 2023 by

On Friday March 3rd, 2023, from approximately 01:00 UTC to approximately 14:40 UTC, numerous users of our service experienced a variety of issues.

A complete listing of the symptoms experienced is infeasible at this time, but logins will have failed to the web-client interface, the cockpit interface, and people will have not received emails in time.

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Update on the ongoing performance issue

Posted on: February 2nd, 2023 by

During the last 2 days Kolab Now has experienced a serious performance degradation issue. Users see that logins to- and operations in the webclient is taking a long time, and users connecting via desktop or mobile clients might not be able to perform synchronizations.

In the end of Wednesday it was thought that the root cause was found, and many users saw better performance for a while, but Thursday morning the performance dropped back to unacceptable levels.

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Announcing Service Window: More replacement of old infrastructure..

Posted on: January 20th, 2023 by

This Friday’s service window was being executed well, and while assisting in replacing some old infrastructure, it opened opportunities to proceed down the same track. With that in mind, the Kolab Now operations team will perform more maintenance on the infrastructure of the Kolab Now platform on Friday, 27th of January 2023 at 10:00 UTC.  The update will move more of backend services to newer infrastructure. No new features visible to end users will be enabled during this maintenance.

The service window is expected to last for no more than 4 hours, ending on Friday, 27th of January 2023, at 13:00 UTC.

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Incident report: ‘Gateway Timed-out’ at login

Posted on: January 14th, 2023 by

On Saturday January 14th, 2023, from approximately 03:47:12 UTC a group of Kolab Now users observed an error stating: “Gateway time-out” when trying to login to the webclient, the dashboard, or connect with any desktop or mobile client. The Kolab Now main page and all other services (Support, blog and knowledge base) were available with no issues for these same users.

The issue lasted until approximately 08:04:22 UTC, and was caused by a db server in one of the clusters being stuck in a large operation. The issue caused troubles with the login procedure, but had no impact on the mail flow. No mail was lost or delayed during the incident.

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Announcing Service Window: The death of old infrastructure..

Posted on: January 13th, 2023 by

On Friday, 20th of January 2023 at 09:00 UTC, the Kolab Now operations team will perform maintenance on the infrastructure of the Kolab Now platform.  The update will move a part of the backend services to newer infrastructure. The updates will bring more stability and better manageability to the backoffice systems. No new features visible to end users will be enabled during this maintenance.

The service window is expected to last for no more than 4 hours, ending on Friday, 20th of January 2023, at 13:00 UTC.

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The Annual Certificate Refresh

Posted on: January 2nd, 2023 by

Another year past and we needed to again refresh our certificates.

As in previous years, e.g. 2018, 2019, 2020, etc, we rolled over certificates across all systems over the last few days of the year.

The new certificate is in place, and applies to, imaps:// and smtps://

As in previous years, we publish the fingerprint here:






Kolab Now Rocks 2023

Posted on: December 16th, 2022 by

Ho ho ho,

what a wild, crazy and yet beautiful year we shortly leave behind us!

Again we want to express our deep thankfulness to all the users of Kolab Now – you guys rock and help us everyday to improve, refine and grow.

In the last year we had ups and downs, learned from mistakes, developed new paths where necessary and we say: respect for everyone going through this together with us and trusting in our expertise. Your feedback and use of our services made it possible for us to push Kolab Now to yet another higher level of quality. We can now with great pride say that:


In a year like 2022, one realize how important it is to be able to stay in contact with people in your close circle as well as the ones who are on a greater distance. Some people move away and some work in remote places. No matter how personal or professional the contact is, it is important that it can be kept private and secure.

Here is the perfect holiday present from us for the one with whom you want to stay in contact in 2023:

New Kolab Now sign-ups (individual and group accounts) will receive 3 months free usage when signing up before the 01.01.2023 with the voucher code KOLABNOWROCKS2023

Here is how it works step by step:

  1. Go to and choose individual or group account
  2. Enter your name and set an external e-mail address
  3. Receive the registration code at the external e-mail address
  4. Set your Kolab Now identity and enter the voucher code KOLABNOWROCKS2023
  5. Wait till your Mailbox is being created and start the journey

Merry Christmas and a Happy New Year from the Kolab Now team!


How do server side (sieve) filters work again?

Posted on: September 19th, 2022 by

Kolab Now offers a mail filtering feature. That makes it possible to apply a series of actions to specifically selected incoming emails, so that incoming mail meeting a certain criteria can be automatically processed by the server and handled/organized according to the defined actions. For example the server can move the message to a specified folder, redirect it to another account, send a reply, discard, delete, etc for as long as the defined criteria is fulfilled.

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Important: DNS settings @KolabNow

Posted on: July 13th, 2022 by

This goes out to those users who joined our service back in the days when it was still called MyKolab.

(Note: No emails were hurt during the writing of this blog post)

In 2015 our service changed its name from MyKolab to Kolab Now – as we know it today.

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