Click2Mail lets you send Certified Mail from your computer, no need to go to the post office. You get a receipt of mailing and proof of delivery; plus you can see the name and signature of the person who accepted the mail. You can even require the addressee to sign for the package with the Restricted Delivery service. Certified Mail is a requirement in many businesses – for example, for doctors, lawyers, and accountants. For an additional fee (less than the Green Card), an electronic version of the Return Receipt is sent via e-mail with a PDF attachment that includes an image of the recipient’s signature or an approved hand-stamp. No Minimums. Pay for what you use. Just upload and send.