The short answer
Buy the card for the person, not for the display rack. Settle three questions before you shop: who will read it, how it gets delivered (handed over or mailed), and whether you want a printed verse or open space for your own words. A 5 x 7 inch card printed on 100 lb or heavier cover stock with a matched envelope handles most birthdays and still mails at the standard letter rate. Choose boxed sets if you send several cards a year, and single premium cards when the occasion calls for weight.
What to look for in a birthday card
- Paper weight and finish. Cover stock of 100 lb or more resists show through from the other side. Uncoated and matte stocks accept ballpoint, gel, and fountain pen ink. High gloss stocks can smudge.
- Envelope fit. The card should slide in without bending and the flap should seal flat. A snug envelope protects corners in the mail.
- Print method. Letterpress, foil stamping, and embossing read as premium. Digital print on textured stock is the practical middle range and holds up well.
- Interior format. Printed verse sets the tone for you. Blank interiors leave room for a real note. Many cards now print a short line and leave the rest open.
- Size and postage class. Rectangular cards under 6.125 x 11.5 inches and under one ounce usually travel as a standard letter.
Parameter bands worth knowing
- Size: 4.25 x 5.5 inches for a compact note, 5 x 7 inches as the default, 8 x 8 inches or larger for group signing.
- Paper: 80 lb text feels thin, 100 lb cover is the solid baseline, 110 to 120 lb cover and cotton rag feel substantial.
- Extras: foil, glitter, die cuts, pop ups, and inserts. Each adds cost and can add handling problems.
- Quantity: singles for one important card, boxed sets of 8 to 20 for routine sending.
Pitfalls that spoil a good card
- Thin stock that lets writing ghost through the front.
- Square envelopes, which fall outside standard letter pricing and cost more to mail.
- Loose glitter that sheds onto hands, clothing, and the inside of envelopes.
- Undersized envelopes that crease card corners before they arrive.
- Generic verse that fights the message you want to write.
FAQ
Blank or printed message?
Blank works when you know what you want to say. Printed verse works when the card says it better than you would, or when time is short. Read the verse in the store before buying, since tone varies widely between brands.
How much postage does a birthday card need?
Most rectangular cards under one ounce ship at the standard first class letter rate. Oversized, square, rigid, or heavy cards need extra postage. Weigh the finished envelope at the counter if you are unsure.
How far ahead should I buy?
Buying a boxed set in advance saves a rushed trip. Single cards for a specific person are better chosen close to the date, when you know what is worth referencing.