GUIDE

We mail cards and letters to our grandkids in another state. How do we keep a back-and-forth going when they can't write yet?

By the seenow! teamLast updated:

Make replying something a preschooler can do without writing. Tuck a stamped, self-addressed envelope and a half-finished reply page into each letter, with boxes to draw in, stickers to place and one word to trace. Keep the reply envelope flat and rectangular so a single Forever stamp covers it, and keep every letter in one place.

Note: This article reflects information available at the time of publication. Programs and services may change, so please check official sources for the latest details.

WHY

Why this happens

Letters are one of the few ways a grandparent in another state can be part of a young child's week without a screen. A card in the mailbox with their own name on it is exciting at three or four. The trouble is the other direction. A preschooler cannot write a letter, the parents are busy, and a reply means finding an envelope, the address and a stamp. Most weeks, nothing goes back, and after a while it feels like writing into a void.

The fix is to move the work of replying to your side of the mail. If everything the child needs comes in the envelope, from the paper to the postage, the parents only have to hand over crayons and drop the reply in the mailbox. And if the reply page asks for drawing, pointing and stickers instead of sentences, a 3-year-old can do most of it alone.

Postage rules matter more than you would expect here. Kids' mail tends to be square, lumpy, or stuffed with treasures, and USPS charges extra for envelopes that cannot go through its machines. A little planning keeps one stamp enough for the trip back.

HOW TO

What you can do starting today

  1. Send a reply kit with every letterNo app needed

    Fold a plain rectangular envelope with your address already written on it and a Forever stamp on the corner into each letter. USPS's letters page lists the Forever stamp at $0.82 as of November 10, 2026, so one stamp per letter is the whole cost of the reply. The parents never have to look up your address or find a stamp, which is usually where replies stall.

    Source: USPS: Send Letters and Cards

  2. Write half the reply yourselfNo app needed

    Instead of a blank sheet, include a reply page with prompts: "Draw what you ate for breakfast." "Circle the weather today: sun, rain, snow." "Put a sticker on your favorite animal." Leave one dotted word to trace, such as their name or yours. A parent can add a line of what the child said while drawing. Over months, the tracing turns into real letters, and you will see it happen.

  3. Keep the envelope flat and rectangular going both waysNo app needed

    USPS says a letter has to be rectangular and paper, no larger than 11-1/2 by 6-1/8 inches and no more than 1/4 inch thick. Square envelopes, or envelopes that are rigid, lumpy or closed with clasps or string, count as nonmachinable and cost $0.49 more. That rules out square greeting cards, a single coin, or a puffy sticker sheet in the reply envelope. Flat paper stickers and folded drawings are fine.

    Source: USPS: Send Letters and Cards

  4. Try one journal that travels back and forthNo app needed

    Some families use a thin notebook instead of loose letters: you write a page, mail the notebook, the child draws on the next page and it comes back. All the letters stay in order in one book. Keep it slim enough to stay under the 1/4-inch thickness limit, or send it as a package once it grows.

  5. Give the letters one homeNo app needed

    Ask the parents to keep a single box or folder where your letters go after they are read aloud, and keep the child's replies the same way at your house. Write the date on each one. When the child is old enough to read, both sides of the conversation are there.

WITH SEENOW!

Doing it with seenow!

seenow! is a family app for short videos, about 2 seconds each, in a private group you invite people into. Paper stays the heart of this tradition, but a clip can show you what the letter could not.

  • The parents can take a 2-second clip of your grandchild opening your envelope or holding up a drawing before it goes in the mail. You get a notification when it is posted, so you know the letter arrived days before the reply does.
  • Only the family members you invite can see the clips.

What seenow! can’t do

  • seenow! cannot send or track mail, and it does not replace the letters themselves.
  • Scans or photos already saved on a phone cannot be posted. To share a drawing, the parents need to take a new photo or clip of it with the seenow! camera.

POINT

Things to watch for in this situation

Check the postage before each batch

Stamp prices change, and USPS lists current prices on its letters page. The prices on this page were checked on November 10, 2026. Check again before you buy postcard stamps or extra postage for a large batch.

Do not expect a reply every time

Even with a full reply kit, some weeks nothing comes back. Keep writing anyway. To a young child, the letters arriving matter more than keeping score.

FAQ

Frequently asked questions

How much does it cost to mail a letter to my grandchild?

As of November 10, 2026, USPS lists a First-Class Mail Forever stamp at $0.82 for a standard letter. Square, rigid or lumpy envelopes cost $0.49 more. A standard postcard stamp is listed at $0.65.

Can I mail a square card or a small toy in an envelope?

You can, but USPS treats square, rigid or lumpy envelopes as nonmachinable and charges $0.49 extra. Anything thicker than 1/4 inch no longer counts as a letter.

What can a 3-year-old send back?

A drawing, a sticker page, a traced name, or a page where a parent writes down what the child said. The point is a reply in the child's own way, not a written letter.