Customer Services
If you need to send files in a secure manner to Grontmij employees, please click here to use our Large File Exchange service. With this service you can send large files which cannot be sent via e-mail.
Employee Services
These services are for employees only and require a username and a password.
Webmail
Large File Exchange for Grontmij Employees
Change Password
iShare
BST
Service Announcements
If you cannot login to Webmail or iShare, your password may be expired. Use Change Password to resolve this.