And as a reminder, USPS first class mail letter rules are:
up to 3.5oz in weight
Minimum Size: 3½ inches by 5 inches
Maximum Size: 6⅛ inches by 11½ inches
Thickness: 0.009 inch to ¼ inch
First-Class Mail Flats (Large Envelopes) rules:
Maximum weight: 13 ounces – Additional ounces above one ounce have a separate per ounce price
Flats that are for the round-trip mailings of a disc and that weigh up to 2 ounces can be mailed at the postage price of a 1 ounce Flat. Round-trip mailing of a disc is mailing, under specific criteria, from a mailer who expects to receive the disc back from a subscriber.
Large Envelopes (Flats) that exceed 13 ounces are mailed at the Priority Mail® rate
Size Requirements:
Minimum Size: 6⅛ inches by 11½ inches
Maximum Size: 12 inches by 15 inches
Thickness: ¼ inch to ¾ inch
You will need to slice the eggs in order to place them in the envelope.
And as a reminder, USPS first class mail letter rules are:
up to 3.5oz in weight Minimum Size: 3½ inches by 5 inches Maximum Size: 6⅛ inches by 11½ inches Thickness: 0.009 inch to ¼ inch
First-Class Mail Flats (Large Envelopes) rules: Maximum weight: 13 ounces – Additional ounces above one ounce have a separate per ounce price Flats that are for the round-trip mailings of a disc and that weigh up to 2 ounces can be mailed at the postage price of a 1 ounce Flat. Round-trip mailing of a disc is mailing, under specific criteria, from a mailer who expects to receive the disc back from a subscriber. Large Envelopes (Flats) that exceed 13 ounces are mailed at the Priority Mail® rate
Size Requirements: Minimum Size: 6⅛ inches by 11½ inches Maximum Size: 12 inches by 15 inches Thickness: ¼ inch to ¾ inch
You will need to slice the eggs in order to place them in the envelope.