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By Definition - Birthday Card

This fun birthday card is the perfect way to send birthday greetings to friends and family! This card reminds the recipient what birthdays are all about: judgment-free fun! This is a cheeky and fun 'happy birthday' card to send to someone and let them know you're thinking of them.

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Customize everything from your card to the email your recipients open with colors, logos, and text boxes.


Add a Photo Gallery or Video Block to share more fun moments with your loved ones.

Closed envelope

Easily add recipients from your address book or upload them in seconds.


Send via email, text message, or shareable link instantly, or schedule ahead of time.

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No more return-to-sender: Track deliverability and opens instantly.