If you want to include additional documents, like your AGB, or a reciept, you can select and add one or more attachments by clicking on Browse under Attachments. The total volume of the e-mail may not exceed 5 MB. Permitted file types are .doc, .docx, .xls, .xlsx, .pdf, .jpg, .gif and .png. Please note that an attachment is only required if the e-mail is being sent via the Backoffice. If you are using your local e-mail program, the attachments from the Backoffice are not included for technical reasons.