Wanderlust World Wanderlust World Standard USPS First-Class Mail: 2–3 business days.
| Service | Typical Time | Tracking | Best For |
|---|---|---|---|
| First-Class Mail (letter/flat) | 2–3 days | No (unless add-on) | Letters, bills, cards ≤13 oz |
| Priority Mail | 1–3 days | Yes | Packages, faster letters |
| Priority Mail Express | 1–2 days (guaranteed) | Yes | Urgent, time-sensitive |
| Ground Advantage | 2–5 days | Yes | Heavier packages, economical |
For certainty, use USPS Service Standards Map or buy tracking/insurance.