Contact PostKid

PostKid is a small, independent, ad-supported site — there is no support team standing by, but a real person reads what comes in to support@postkid.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the postage calculator, mail delivery time estimator, envelope & paper size matcher, pen-pal time-zone helper, letter reading time, or stamp quantity calculator— and what you entered); a tool or letter-writing topic you wish existed on the site; an out-of-date fact or broken link in the blog, learn section, or the Postal & Writing Museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. If a question is really about the exact postage on an important package or a specific postal rule, the post office or your carrier will have a more authoritative answer than this site can give; PostKid’s tools produce general, curated estimates for planning and teaching, not official postal quotes, and the site isn’t affiliated with any postal service or stationery brand.

Before writing in about a tool result, it can help to double-check the numbers you entered — a letter’s weight, the stamp value, or a city’s time zone are the most common source of a surprising answer. If it still looks wrong after that, that’s exactly the kind of message worth sending.