Permissions for using Email Template to send quotation

When sending quotation as an admin user via OpenERP "Send Email" function the form opens and I can specify the recipients and use a template for the email body. However when performing the same function as a user that has the See All Leads permissions, with read access rights setup for Email templates object and email.template system, the message form opens however none of the template text is visible even though the user can select the template from the dropdown on the left. The user's email also does not get sent when clicking the Send button, no errors are displayed - the email is just never delivered.

Any ideas? It sounds to me like a permissions problem, but I dont know what drives the access rights to use the send email and template functions.