Guides for sellers who mail letters
Guides to shipping cards and small orders in an envelope: what USPS charges, what TCGplayer, eBay and Mana Pool require, and what a letter's scans can tell you. Each one cites USPS or the marketplace with the date we checked, and we update them when a rule changes.
Shipping cards
- How to ship trading cards in a plain white envelopeSleeves, toploaders, envelopes, stamps, and when to switch to a bubble mailer.
- TCGplayer shipping rules for sellersThe $20, $49.99 and $250 lines, and the August 2026 Safeguard change.
- eBay Standard Envelope, and what to use above $20Prices, size limits, what its tracking shows.
- The nonmachinable surchargeWhat makes a letter cost $0.49 more, and lose its scans.
Tracking letters
- Can you track a letter?What USPS shows for a stamped letter, and the options.
- How to send a letter with trackingEvery option from a barcode to Certified Mail, with prices.
- What each USPS scan on a letter meansFrom the first plant to USPS's delivered estimate.
Free tools
- Letter checkerLetter or large envelope, machinable or not, and how many stamps.
- How long will a letter take?USPS's delivery days between any two ZIP codes, on a calendar.
Comparisons
- Tools that track stamped letters, comparedPrices, free allowances, imports and insurance in one dated table.
- LetterTrack alternativePigeonTrail for LetterTrack users.
- TCGTracking alternativePigeonTrail for TCGTracking users.
Track the letters you mail with a stamp
Your first 100 letters each month are free, and you don't need a card to start.