Using our Webmail

We are offering the Open Source Roundcube software as webmail client. Apart from reading and composing e-mails, this can also be used to make certain changes to your e-mail address, such as changing the password, configuring a forward, setting an Out of Office reply, or fine tuning your spam filter settings. This page highlights those options.


Logging in

To reach the webmail client, press "Login" and "Webmail" on our homepage. Fill out your e-mail address as username, type the password en press login. If logging in is not successful please contact your administrator to verify and/or reset your password.

Change password

Once logged in, you can change your password under "Settings". The new password should be at least 8 characters long. Please use a long, and strong, password, this makes it less likely the account will be hacked. We advise using random passwords in combination with a password manager.

It is advisable to regularly change your password yourself, especially if you just received the password from your administrator.

Out of Office

Setting an Out of Office reply can be done by logging into our Webmail and going to the "Settings" menu in the left pane. You can configure your message, and the period the message will be active for, under "Out of Office". Do not forget to turn the status on.

In most cases, there is no need to make changes to the advanced settings that are shown.


'E-mail forwarding' means that your incoming e-mail will automatically be forwarded to another e-mail address. This can be done if you want to forward to another e-mail address using the same domain name.

Forwarding can be done by logging into our Webmail as the e-mail user, going to the "Settings" menu in the left pane and then clicking on "Forwarding". You can select to send a copy, so the mail is delivered in both mailboxes, or to set a redirect (or alias). In the last case, the e-mail is only delivered to the target mailbox.

Do not forget to turn the status on.

It is technically possible, but we advise against forwarding to external addresses (such as Google or Microsoft addresses), since increased usage of SPF-records makes it likely for e-mails forwarded in this way to be refused by the ultimately receiving servers. As an alternative, many external addresses can be configured to fetch Greenhost mail using POP3 or IMAP.

Are you looking for an existing forward that is not showing up here? In some circumstances forwards can also be listed under "Filters".

Spam filter configuration

Greenhost automatically scans your e-mail for 'spam' messages. Our spam filtering software assigns a spam score to every e-mail based on many factors. Higher scores means the e-mail is more likely to be spam, lower scores means the e-mail is likely legitimate. These scores are then interpreted by the filters in your e-mail account. You can adjust the sensitivity of the spam filter for your e-mail address through Webmail.

Adjusting the spam filter

The spam filter is enabled automatically and configured with a default setting 5. This means that messages with a spam score lower then 5 pass through and end up in your Inbox. Messages with a spam score higher then 5 are filtered into your Spam folder. Messages with a spam score higher then 10 are refused altogether by our mail-server, and are sent back to the sender. If you find that too much spam enters your mailbox, you can lower the number, if legitimate e-mail is too often filtered out as spam, you can set the number a bit higher. Don't forget to click 'Save' after you made your changes.

Disable spam filter

It is possible to disable spam filtering for your e-mail address, but we advise against this.

Spam filter exception list

There might be some legitimate e-mail addresses that you want to exempt from the spam filter. These e-mail addresses can be added to the 'spam filter exception list' and will then reach your inbox regardless of the spam score (as long as it is below 10). To allow every e-mail address from a certain domain, just fill in the domain name and click 'Add'. An e-mail address or domain can be removed from the allow list by clicking the red 'x' behind it.

Tips to prevent spam

When leaving your e-mail address online

Spammers usually collect e-mail addresses from websites and forums or buy them from other parties. Therefore, do not leave your e-mail address publicly visible on a website or forum. If you still choose to do so, then post an image of the e-mail address or write it down in a convoluted way, such as: 'john A1 yourdomain dotcom'. Be careful when writing things like 'john[at]' as many programs understand the trick of substituting the '@' with '[at]' nowadays.

When registering for an online service

Do not use your main e-mail address to register for an online account or online services. Instead create one or more separate e-mail addresses to register, and consider using free temporary e-mail addresses for these purposes.

When receiving spam

Try not to open spam e-mails if your e-mail client is set to automatically load external content, which is often the default setting. In addition to that, never click on any elements in a spam message. When you load images or other content in an e-mail or when you click on a link, a spammer will receive a notification that your e-mail address is active. Also, do never reply to a spam e-mail.

Report a spammer

You could consider reporting a certain spammer at This organisation analyses the spam message and sends a complaint to the ISP who can then take steps towards the spammer.