Send sibling birthday ecards

Show your sibling just how much they mean to you with a custom online birthday card from CardSnacks. Whether you're living under the same roof or miles apart, our wide variety of

fun and heartfelt online cards makes it easy to send a birthday message instantly in a perfect brother birthday card or the perfect sister birthday card. With designs that are sweet, silly, or sentimental, it’s never been easier to create a perfect card that truly fits your sibling's style for their birthday.

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Happy Birthday Sista ecard

Happy Birthday Sista

Shiny SiSTAR ecard

Shiny SiSTAR

Hey Big Sis ecard

Hey Big Sis

Bro Birthday Gift ecard

Bro Birthday Gift

Birthday ecards

Siblings: Friends From Birth, Family for Life
Siblings are your very first friends—partners in crime, co-stars in every family story, and the ones who’ve known you longer than anyone else. From childhood mischief to adult milestones, that bond only grows stronger over time since they are your lifelong friends. A birthday is the perfect moment to celebrate that one-of-a-kind relationship and remind your sibling that no matter how old you get, you’ll always be there for each other as a constant friend.

Send a Virtual Birthday Card That Feels Personal
From childhood adventures to inside jokes that only the two of you get, your sibling has been there through it all. Their birthday is the perfect time to remind them just how awesome they are—and how lucky you are to have them in your life.
With an online birthday card from CardSnacks, you can send a message that’s funny, emotional, nostalgic—or all three. Whether sharing funny messages or something a little more heartfelt, we have exactly what you need to make a fun birthday ecard. Here are some creative ways to make your sibling’s card unforgettable:
Custom Messages Just for Them Write a funny, light-hearted message, share a favorite memory, or remind them of the impact they made on you during a difficult time. Whether it’s sweet or sarcastic, your words will hit home.
Photos and Videos from Your Best Moments Upload hilarious throwback pics, vacation snapshots, or goofy selfies to make this birthday card as memorable as your bond.
Voice or Audio Greetings Say “Happy Birthday!” in your own voice—add a loving message or maybe even a sibling-style roast (you know they’d expect nothing less).
Fun Animations, Stickers & GIFs Personalize your card with vibrant visuals that match their vibe—whether they love pop culture, memes, or just something goofy. Just browse our categories of fun images in our stickers and gifs section on the app.

Wherever you are, CardSnacks makes it easy to celebrate any special occasion, especially for your sibling's birthday!

Creating a Birthday Card for Your Sibling is Easy:
Download the free CardSnacks app on iOS or Android
Browse our collection of birthday ecards for siblings
Customize with your own heart-felt message, photos, videos, and more
Add a digital gift card, if you want to make it special gift, from top retailers
Choose your delivery method (text or email)
Send it right away or schedule it for their birthday with plenty of time


It’s that easy! If you need happy birthday cards to send in a text or via e-mail, look no further than CardSnacks to brighten someone’s day! Also check out some of our other categories of ecards, including belated birthday ecards, friendship ecards, birthdays en Español ecards, and thank you ecards.

FAQs

Is CardSnacks a greeting card company?
Yes, CardSnacks is a digital greeting card company that lets you customize your own card for any occasion and add a gift card. You can easily send the card instantly or schedule for later.

How do I send a digital birthday card?
Just choose a card whether cards for sister or brother, personalize it with your message, and send it by text or email. You can send it instantly or schedule it in advance as long as you have the recipient info. No worries about delays when you send your online birthday card with CardSnacks since the recipient will get the card in plenty of time.

Can I include a gift card?
Yes, we have a variety of gift options between digital gift cards and physical gifts! After writing your message, simply add a digital gift card from hundreds of popular stores or add a physical gift to make it the perfect card.

How can I share a sibling birthday ecards on social media platforms?
Yes, you can utilize our share link feature to share to your social media platforms.

Can I invite others to sign a birthday group ecard?
Absolutely. You can create a digital brother birthday group card or a digital sister birthday group card and send to others so everyone can share their own message. Virtual group cards have never been easier.

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