The Postables work against the clock decoding a letter to rescue a soldier in Afghanistan and reunite her with her family, while Rita competes for the national Miss Special Delivery title in Washington, D.C.
Unfortunately the movie Signed, Sealed, Delivered: The Impossible Dream is not yet available on HBO Max.
| Directing | Kevin Fair | Director |
| Writing | Brandi Harkonen | Writer |
| Writing | Martha Williamson | Writer |
| Production | Harvey Kahn | Producer |
| Crew | Brett Armstrong | Stunt Coordinator |
| Crew | Daniel Mallinso | Pilot |
| Crew | Crystal Dalman | Stunts |
| Production | Allen Lewis | Production Manager |
| Directing | Matthew Blecha | First Assistant Director |
| Directing | Lori K. Peterson | Second Assistant Director |
| Production | Steve Kinghorn | Assistant Location Manager |
| Camera | Dale H. Jahraus | Camera Operator |
| Camera | Lindsay George | Camera Operator |
| Camera | Randal Platt | Camera Operator |
| Camera | Monica Chai | First Assistant Camera |
| Camera | Emmanuelle Rousseau | First Assistant Camera |
| Camera | Tegan Kolodinski | Second Assistant Camera |
| Camera | Boris Martens | Second Assistant Camera |
| Camera | Molly Mackinnon | Camera Trainee |
| Camera | Kali Smith | Digital Imaging Technician |
| Camera | Bettina Strauss | Still Photographer |
| Sound | Sebastian Salm | Sound Mixer |
| Sound | Paul Novokshonoff | Boom Operator |
| Directing | Tahnee Curtis | Script Supervisor |
| Crew | Tamara Tulloch | Craft Service |
| Art | Mark Mcdonald | Set Decoration |
| Art | Liam Begley | Assistant Set Decoration |
| Art | Heather Ohlin | Set Dresser |
| Art | Michelle Allan | Property Master |
| Art | Tiffany Sheppard | Assistant Property Master |
| Art | Jannat Deol | On Set Props |
| Costume & Make-Up | Rebekka Sorensen | Costume Designer |
| Costume & Make-Up | Maria Tyson | Assistant Costume Designer |
| Costume & Make-Up | Ren Boggio | Costume Coordinator |
| Costume & Make-Up | Layne Beck | Costume Set Supervisor |
| Costume & Make-Up | Sarah Dalziel | Truck Costumer |
| Costume & Make-Up | Erin Mackenzie | Key Makeup Artist |
| Costume & Make-Up | Nicole Rhianne Wise | Key Hair Stylist |
| Costume & Make-Up | Riley Harvey | Assistant Makeup Artist |
| Costume & Make-Up | Maria Gleeson | Assistant Hairstylist |
| Lighting | Tyler Walzak | Gaffer |
| Lighting | Poya Reisi | Best Boy Electric |
| Camera | Mark H.W. Park | Key Grip |
| Camera | Tyler Klassen | Best Boy Grip |
| Camera | Corey Tremblay | Dolly Grip |
| Crew | Darcy Davis | Special Effects Coordinator |
| Art | Warren Schiewe | Construction Coordinator |
| Production | Miles Gorovich | Production Coordinator |
| Production | Lance Deyaeger | Assistant Production Coordinator |
| Production | Alexandria Bicknell | Assistant Production Coordinator |
| Directing | Erin Dixon | Third Assistant Director |
| Production | Svatia Sakarova | Accountant |
| Production | Lesley Cook | Production Accountant |
| Production | Nicola Eagen | Assistant Accountant |
| Crew | Dean Fitzpatrick | Transportation Coordinator |
| Crew | Brent Corbin | Security Coordinator |
| Production | Sara Brown | Extras Casting |
| Production | Doreen Ferreira | Extras Casting |
| Production | Alex Mcrae | Extras Casting Assistant |
| Crew | Dawn Knight | Post Production Supervisor |
| Editing | Jorelle Miranda | Assistant Editor |
| Editing | Michael Jacobsen | Assistant Editor |
| Production | Sepideh Merchant | Post Production Coordinator |
| Editing | Jimmy Hsu | Colorist |
| Editing | Jay Harada | Online Editor |
| Editing | Kevin Reid | Online Editor |
| Editing | Shaun Lang | Online Editor |
| Visual Effects | Barry Liu | Visual Effects Supervisor |
| Visual Effects | Tyler Mirecki | Visual Effects Coordinator |
| Sound | Angelo Nicoloyannis | Sound Re-Recording Mixer |
| Sound | Angelo Nicoloyannis | Sound Editor |
| Sound | Greg Stewart | Sound Re-Recording Mixer |
| Sound | Jeff Jackman | Sound Designer |
| Sound | Roger Morris | Dialogue Editor |
| Sound | Rick Senechal | Foley Recording Engineer |
| Sound | Don Harrison | Foley Artist |
| Sound | Ian Mackie | Foley Artist |
| Sound | Valerie Biggin | Music Supervisor |
| Crew | Crystal Dalman | Stunt Double |
