Source: https://simsvip.com/the-sims-4-postcards-collectibles/
Timestamp: 2019-04-26 07:37:57+00:00

Document:
To collect postcards, Sims will have to meet and write to online pen pals. Sims will need to “Find a Pen Pal” using the “Socialize” interaction on the computer. Once a request has been sent, wait a few hours for a response. Check for responses using the same socialize interaction on the computer.
Once your Sim has successfully met a pen pal, send at least one letter to your pen pal using the Socialize > Write Letter To > Location interactions on the computer. This unlocks the ability to ask for postcards.
Considering the rarity of a few of the postcards, don’t expect to receive them in the mail just because you asked for one. The rare postcards may take a few extra letters, and a lot more asking. Once you have postcards to display, purchase the “Bunchapals Postcard Corkboard” to hang them up.
Enable Emotional Aura: Postcards will give off an “Inspired” Aura if you choose to enable it. This automatically guarantees the specified emotional state of all Sims who are near the postcards.
Isla Paradiso Rare §40 Fun in the Sun and Under the Sea! Relaxing at Tropical Isla Paradiso!
Dragon Valley Rare §25 Huzzah! Come tarry a while in Dragon Valley. Here be Dragons!
Barnacle Bay Uncommon §25 Ahoy! There be a fine breeze 'n plenty 'o plunder here in Barnacle Bay!
Midnight Hollow Uncommon §40 Eerie Greetings from Midnight Hollow, a Uniquely Eccentric Town.
Lunar Lakes Uncommon §40 Come experience Lunar Lakes! A place like nowhere else!
Champs Les Sims Uncommon §25 Bonjour! Enjoying find juice and frog legs in Champs Les Sims!
Littlehaven Common §10 Having a lovely holiday in Littlehaven. Wish you were here!
Bridgeport Common §40 Touring the bright lights of Bridgeport!
Riverview Common §10 Gone Fishin' in Riverview! Havin' a Reel Good Time!
Sunset Valley Common §40 Admiring the skies of Sunset Valley, where it all began!
Appaloosa Plains Common §40 Horsing around with furry friends! Come visit Appaloosa Plains!
Moonlight Falls Common §25 Moonlight Falls, home of all things Magical and Supernatural!
Lucky Palms Common §10 What happens in Lucky Palms, stays in Lucky Palms!
Twinbrook Common §40 Thinking of you from Twinbrook, where style is invented!
My Penpal Pal Plaque §0 Awarded to household when completing the "Postcards" Collection.

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