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Dear Posteo customers,

Starting today, we will be gradually releasing new features for you: Just in time for the beginning of spring we are bringing some color to your mailbox – we are now offering our user interface in 10 new variants. Additional updates include dark mode as well as two levels of contrast.

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Regardless if you prefer yellow, pink, red or neutral colors like beige, brown or blue: From now on, the color of the user interface can be adjusted in the settings. The selected color will be applied to all areas, such as the calendar, notes, the attachment browser or in the Posteo web app.

Each Color in Two Contrast Levels

It is also new that all color variations are now available in two contrast levels. If you regularly work several hours in front of a screen, a color and contrast selection tailored to their own needs can be much more pleasant. Please try it out!
The contrast toggle switch can be found in the settings directly above the color selection.

Dark Mode

Another update: Starting now, you can activate dark mode. The background will then be displayed darkened and the text brightened – in the color you have selected. dark mode is especially useful for reading emails in darker settings. Many people also consider this more pleasant on the eyes in general.

Additionally, you have the option to automatically control Light and dark mode based on your operating system settings: The Posteo interface will then adapt accordingly – also on smartphones using the web app.

There is a toggle switch for dark mode and auto dark mode directly above the color selection.

We will gradually release all new features over the next few weeks. As soon as they have been released for your account, you will find the new options in Preferences via “User Interface”. These features are available free of charge without any further action on your part.

Video and Help Guides

In our video, you will learn how to select your personally favorite color and contrast level – and how dark mode works. There are also versions of the video available in French and German.

You can find step-by-step guides in our help section here:
How do I change the color of the Posteo webmail interface?
How do I activate dark mode for my account?
How do I install the Posteo web app?

Best regards,
Your Posteo Team

Dear Posteo customers,

Perhaps you have already noticed that we have released a new feature: the deletion notification. The new security feature protects you from unnoticed data loss; for example, if you have accidentally deleted emails from your account. The new feature has proven to be successful in everyday use. That’s why we would now like to officially present the deletion notification in our blog.

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It is not so uncommon for customers to accidentally delete emails or an entire folder. We would like to provide you with the best possible protection for such cases: Posteo has always offered a special service of creating daily security backups of all email accounts and storing them 7 days for you. If needed, we can then restore these backups for you free of charge.

We have developed the new deletion notification because on a daily basis it was sometimes not satisfactory for us when customers would notice too late – after more than 7 days – that they – or the programs and devices they use – accidentally deleted many emails. We were then no longer able to help them.

With the new deletion notification, this no longer happens. Our system automatically sends a notification via email as soon as the amount of emails in your account is reduced by at least 50 emails within the past 24 hours.
And we can already say that the new feature is a complete success. Meanwhile, almost all customers that accidentally deleted emails contact us in time so that we can restore their data from our security backups. We have been happy to see the positive and relieved responses – thank you for this.

Unlocked cell phones, errors in local clients

The main reasons for accidentally deleting emails can be quickly listed:
Often customers report of “cleaning” gone wrong in their own account – or from smartphones that were not locked in a pocket or bag.

Deletions are more likely to go unnoticed when customers are unaware of deletion settings in their local email clients – such as in Apple Mail, Outlook or Thunderbird. Therefore, it’s generally worth it to check the deletion settings in external email programs. Also, when updating these email clients, errors can sometimes occur that cause emails to be deleted unexpectedly.

By the way, out of principle Posteo never deletes emails from your email account – not even if your storage quota has been filled. We often receive this question.

I received a deletion notification – what do I do now?

If you receive a deletion notification from us in the future, follow these steps:

If you intentionally deleted the emails, simply ignore the deletion notification.

If the messages were accidentally deleted, verify if apps or email clients on your devices are automatically deleting emails. Perhaps your email client (e.g. Apple Mail) automatically emptied the trash. This is sometimes set by default in some email clients. You can, however, change this setting retroactively if you do not want emails to be automatically deleted. For example, also check individual folders, such as the “Sent” folder or your archive.

We do not have any information whatsoever regarding which emails were specifically deleted. The deletion notification has been implemented in a privacy-friendly manner and is entirely generated from values when calculating storage space. We do not look into email accounts and we also do not log which emails were deleted.

Should you be missing emails that you still need and do not have your own backup, please request for us to restore a backup within the next 7 days. This can be done in your settings via “Restore emails”. The backup contains all of the data in your account before the time of deletion. Alternatively, you can request to restore a backup from our customer service via email.
If needed, you can also adjust the deletion settings in your external email client to prevent unwanted deletions in the future.

Adjusting or deactivating deletion notices

Another tip: You can specify in your settings via “Password and security” to receive a notification only when more emails are deleted. This setting is particularly useful for people who regularly delete a lot of emails. If you no longer wish to receive deletion notifications, you can also deactivate the feature there.

We also recommend regularly creating your own backups of all saved data.

Best regards,
Your Posteo Team

Dear Posteo customers,

we have a quick service reminder for you: Wednesday, March 8th, is a public holiday in Berlin. Therefore, we will not be able to process your support requests on Wednesday. We will be available again, as usual, on Thursday. We ask for your understanding.

Best regards,
Your Posteo Team

Dear Posteo customers,

Over the next few days we will update our main security certificate. Security certificates are only valid for a specified time period and need to be renewed from time to time. Because of this, we will be changing this certificate before February 14, 2023.

In most cases, you will not notice any change.
All clients like Thunderbird or Outlook will automatically find the new certificate. You do not need to do anything. However, should your client display a certificate error during this changeover process, please restart your client. This should fix the error.
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If you manage the trustworthiness of certificates manually, you can find the fingerprint for the new main certificate that we will shortly begin using below. You can also find complete fingerprints for all certificates in our legal notice.

New fingerprint for the TLS security certificate for posteo.de:

Geotrust:
SHA256: E8:E2:06:71:4D:15:6E:68:DF:24:CE:FD:7F:53:5D:EE:E1:FA:75:5A:87:14:6D:EC:36:76:15:70:E1:09:8F:92
SHA1: 27:CD:27:2F:23:5B:B8:1F:89:72:8A:71:9B:1A:A0:70:F6:8B:49:BE

Best regards,
The Posteo Team