1st class mail vs priority mail

1st class mail vs priority mail is a frequent comparison for sellers choosing between two USPS services. First-Class Mail is ideal for packages under 13 oz and is cost-effective but slower and without built-in insurance. Priority Mail is faster, supports heavier packages, and includes tracking and $100 of insurance. The choice impacts both delivery speed and cost structure. Fulfillment centers that offer both services can automate the selection process, ensuring that each order is shipped via the most appropriate method based on weight, value, and urgency.