If you are a registered merchant you can contact at our hotline number 09612500500 (9AM- 10 PM) Or you can send an email to firstname.lastname@example.org If you are not registered, then you must register on our website ecourier.com.bd. and after your registration we will activate your account and our concern team will contact you regarding booster service. If you want to avail Masking service by using your company name , we will send you an email “DRAFT AUTHORIZATION LETTER”, you have to print it on your company letterhead pad and send us through email with your signature. We will active your account within 3-5 days. If you have no letterhead pad please inform us.