E-Mail Article

📄️ ActiveSync does not sync past e-mails

If you connect your mobile device using ActiveSync, only current appointments and e-mails will by synchronized. This is a function of the design and concept of ActiveSync and is not related to our services. Normally, past e-mails are only synced by ActiveSync for a few days.

📄️ ActiveSync on Android Devices

You can sync your address book and calendars with your mobile device using ActiveSync or using CalDAV and CardDAV. Here we describe the process of syncing your information with ActiveSync.

📄️ ActiveSync on BlackBerry Devices

You can sync your address book and calendars with your mobile device using ActiveSync. We don’t recommend the usage of CalDAV and CardDAV on BlackBerry devices.

📄️ ActiveSync on iOS Devices

You can sync your address book and calendars with your mobile device using ActiveSync or using CalDAV and CardDAV. Here we describe the process of syncing your information with ActiveSync for iOS devices (iPhone, iPad).

📄️ Can I also use mailbox.org with POP3

Yes. Even if we often focus on using IMAP or IMAP servers for the sake of simplicity, you can also use the POP3 protocol to access your e-mails. The host name for this protocol is pop3.mailbox.org and it is naturally encrypted using SSL. E-mail programs should detect this as part of the automatic configuration and make the necessary settings.

📄️ Can I use sieve mail filtering?

This article has been updated for beta users. You can find the new version for beta users further below.

📄️ Customizing your mailbox.org spam filter settings

This article has been updated for Beta users. You can find the new version for Beta users further below.

📄️ E-mails are not being delivered. What to do

It’s likely that you have enabled your secure e-mail address in the mailbox.org Office settings. When you send e-mails from this address, you may receive error notifications such as this:

📄️ Ensuring E-Mails are Sent Securely

As we explained in our article on SSL/TLS-encrypted connections, we use such connections for exchanging e-mails with other providers whenever we can. This is largely subject to the other providers also supporting SSL/TLS connections. With most providers, there is no reliable way of telling whether a connection is secured this way. With us, there is!

📄️ Exclude individual e-mails from automatic encryption

All mailbox.org customers can enable the automatic encryption of e-mail messages on the account settings page (Select the option “Inbox encryption”). Once a public key has been provided by the user, any incoming e-mail messages will be automatically encrypted. Users can either leave the default setting in place which encrypts all messages or specify additional rules that exclude certain messages from encryption.

📄️ Folder permissions lost

If you try to delete a folder with subfolders from your e-mail box, you lose the access permissions of this folder. The subfolders can be found in the trash, but cannot be eliminated from there.

📄️ Help - Mail appeared to be spam or forged.

A friend is trying to send e-mails to my mailbox.org address, but I never receive them. This is the error message she receives:

📄️ How can I disable the mailbox.org Guard

If you have decided against using mailbox.org Guard and would like to disable this functionality, please send a request to our support team via e-mail. They will first verify that you are the account holder and if this is the case, disable the Guard functionality for your account.

📄️ How to integrate external e-mail accounts

This article has been updated for beta users. You can find the new version for beta users further below.

📄️ How to set up Mailvelope

About mailbox.org Guard and Mailvelope

📄️ How to use mail extensions

Use an unlimited number of e-mail addresses - even without aliases

📄️ HowTo - YubiKey NEO as PGP smartcard

Our tutorial explains how PGP software works and how you can use PGP to encrypt your mailbox.org e-mails. The reliability of the OpenPGP encryption depends largely on the secrecy and secure storage of your private key. If you use GnuPG on more than one device, someone else could create a copy of your secret private key, especially if you share the device with other users, and if any of them happen to have administrative permissions on the operating system.

📄️ iOS - push for new e-mails in subfolders

If you use mail-extensions or our mail filter to automatically sort emails in folders, then the messages might not get transmitted via push services to your iOS device.

📄️ Is there a limit on the amount of e-mails that I can send from my account

It is a matter of fact that any e-mail provider offering anonymous registration will also attract spammers and other criminals, who can easily acquire free demo accounts or use stolen credit card or Paypal information to create fake paid-for accounts.

📄️ Is there going to be transport encryption for my e-mail

mailbox.org checks security standard of e-mail recipients before sending

📄️ My recipient does not use PGP

If the automatic search for valid PGP keys does not yield any positive results, a green symbol will appear next to the recipient address, indicating that this person is a new Guard user.

📄️ My sieve mail filter does not work

If your filter rules do not work, there may be several reasons.

📄️ No ActiveSync for macOS and Windows

Data synchronization with ActiveSync only works with mobile devices such as the iPhone or iPad, Android devices, and BlackBerry. It is not officially possible to use ActiveSync to synchronize data with Windows PCs or Mac computers. ActiveSync was not developed for this purpose.

📄️ No connection to SMTP - POP3 - IMAP-Server

A number of users have complained that they are unable to connect to our mail servers even though they have entered the correct access data and server name. This problem is almost always associated with a locally installed antivirus protection software that monitors the Internet connection and (for whatever reason) blocks the connection to our mail server.

📄️ No synchronization of external inboxes

Note: The features mentioned in this article are available in all packages except the Light package.

📄️ Read encrypted e-mails with Guard

The decryption of messages sent to you by others requires your private PGP key. This key is kept safe on our servers and can only be accessed with an additional password that only you, the account user, knows. We, the server operators, do not have this password and therefore no access to your private key.

📄️ Read encrypted e-mails with webmail client

You may use the mailbox.org Guard to read PGP encrypted emails in the webinterface.

📄️ Send encrypted e-mails with Guard

When drafting an e-mail with mailbox.org, simply click on the padlock symbol in the upper-right corner above the composer window. This makes sure your message will be sent with OpenPGP-encryption. Alternatively, open the security settings and tick the corresponding checkbox to enable encryption.

📄️ Sending e-mails with non-registered mail addresses - Sender address rejected not owned by user

When sending a message with senders other than aliasses used by you, you receive a non-delivery-report with this message:

📄️ Setup with K-9 Mail for Android

You have a number of different options for accessing your e-mails using your smartphone with mailbox.org:

📄️ Setup with Mail.app for iOS

Set up your new e-mail account as follows for devices with the iOS operating system (iPad, iPhone):

📄️ Setup with Mail.app for MacOS X

How to set up your e-mail in the MacOS X Mail.app

📄️ Setup with Mozilla Thunderbird

Our servers are configured such that when you type in your mailbox.org e-mail address, Mozilla Thunderbird will recognise the required settings automatically.

📄️ SMIME supported with encrypted mailbox

You can also integrate S/MIME encryption if you are using our service through your standard e-mail program. For technical reasons, our completely encrypted mailbox currently uses only PGP encryption. We are planning to integrate S/MIME, but we cannot yet provide a timeframe for this development.

📄️ Tabs for your webmail inbox

It is possible to group e-mails in the inbox according to different categories and have them displayed together – many will know this feature from services like Gmail. mailbox.org offers five tabs for this: Whereas General, Social, and Purchases are pre-defined, Favorites and Newsletter are customisable tabs.

📄️ Temporary mailbox for external users

Note: to use the features described in this article, you must have the mailbox.org Guard enabled.

📄️ The mailbox.org HKPS key server

When using the mailbox.org web interface in combination with Guard, any OpenPGP keys needed for securely communicating with other Guard users can be retrieved automatically.

📄️ Tip - How can I setup an alias for iOS

Note: You can use a maximum of 3 aliases in the Light package. In the Standard package you can use up to 10 aliases and up to 25 aliases in the Premium package. If you are using your own domain with mailbox.org you can use 25 aliases in the Standard package, and 100 aliases in the Premium package.

📄️ To set up a vacation notification

1. Log in to your mailbox.org Office and open the Settings.

📄️ Using an alias with Outlook 2016 under Windows

Note: You can use a maximum of 3 aliases in the Light package. In the Standard package you can use up to 10 aliases and up to 25 aliases in the Premium package. If you are using your own domain with mailbox.org you can use 25 aliases in the Standard package, and 100 aliases in the Premium package.

📄️ Using catch-all alias with own domain

Note: The features mentioned in this article are available in all packages except the Light package.

📄️ Using e-mail addresses of your domain

Note: The features mentioned in this article are available in all packages except the Light package.

📄️ Where can I find the PIN for external users

If you forgot the PIN that is needed for external users wanting to access a temporary mailbox, do the following: Go to your e-mails, open the Sent objects**_ folder, and select **the first e-mail** that was previously sent to the temporary mailbox. Open the context menu of that e-mail and find the menu option that says Check assigned PI_**N to display the number.

📄️ Will e-mails get deleted automatically?

No, of course not.

📄️ Windows Phone 8.1 - Error when synchronizing

Many users have complained that they have problems when synchronizing contacts, calendar, and e-mails via ActiveSync.

📄️ Your encrypted mailbox

With mailbox.org, users have the option to automatically encrypt both outgoing and incoming emails using a PGP key. This ensures that access to messages in one's inbox is only achievable with the corresponding private PGP key and password.