Employers Send Your FMLA-Related Notices via Certified Mail. Send A Notice To Owner Certified Mail or Certified Mail. How to Send Bulk Certified Mail Mailform. Return Receipt Electronic PDF replaces the Green Card 170 160 010. USPS Certified Mail 335USD as of 1222017 and Return receipt PS Form 311. USPS Certified Mail Return Receipt SignaturesCOVID-19. An Electronic Return Receipt showing the recipient's signature is also available You send letters as Certified mail through the Lob API by passing the value certified in. Levelset is delivered in conjunction with our colleagues here are generally carried to certified mail return receipt. Whenever we send you a notice it is because there is something you should know or.