Skip to content
FREE Shipping on orders over $75 (Contiguous U.S. Only)
FREE Shipping on orders over $75 (Contiguous U.S. Only)

Grandma Knows 4" x 6" Post Card — Funny Heartfelt Grandma Humor Postcard

Original price $2.25 - Original price $150.00
Original price
$2.25
$2.25 - $150.00
Current price $2.25

Brighten someone’s day with the Grandma Knows 4" x 6" Post Card—a witty and charming postcard that celebrates the wisdom, humor, and unmistakable personality of grandmas everywhere. Printed on premium glossy cardstock at the classic 4″ × 6″ postcard size perfect for mailing, gifting, or framing, this postcard delivers * laughter and love with every send*.

Whether it’s a note to grandma, a keepsake to send with grandchildren, or part of a snail-mail surprise, this postcard is a delightful way to share laughs and memories. The durable glossy finish and vibrant print quality ensure that your message stands out and stays cherished long after it’s received.

💌 Why You’ll Love It

  • Classic 4″ × 6″ Postcard Size: Ideal for standard postcard mailing—no envelope needed and ready to send with a single stamp.

  • Funny & Relatable Theme: Perfect for anyone who appreciates grandma’s humor, life lessons, or that special “knows it all” charm that’s part of grandma magic.

  • Premium Glossy Print: Crafted with high-quality materials that make colors pop and images look great whether mailed or displayed.

  • Perfect for All Occasions: From birthdays and holidays to “just because” moments, this postcard is a thoughtful and fun way to send a smile.

🎁 Great For Gifting & Snail Mail Fun

Send it to grandma herself, slip it in a gift, or add it to a bundle for grandparents’ day—this postcard is sure to spark joy, laughs, and heartfelt stories that family members will treasure. Pair it with a loving message, and you’ve created a keepsake that connects across the miles.

Design Yourself: Please download the Print Guide below if you want to design yourself using PSD, AI, ID, etc. All files must be 300dpi and CMYK in PDF format for final printing.

  • Personalize
  • Print Guide
  • Delivery
  • Personalize these 4" X 6" Postcards adding your one-line personal messages on the front. Then add your text, images, logos or artwork on the back with our easy to use Personalizer.

  • Print Guide: Download this print guide if you want to design yourself.


  • Our normal turn around time is 1 - 3 business days to receive your proof for approval. Once approved by you 5 - 7 business days to ship your cards.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare