Priority Mail from Flint, MI is typically delivered in 2 - 5 days. You can get a better estimate for your priority mail letter by using the postal calculator tool found here: https://postcalc.usps.com/ServiceCommitments. Enter 48509 as the originating zip code into the delivery calculator. Priority Mail delivery within those timeframes is not guaranteed.

Priority Mail® orders placed before noon Eastern are printed and mailed the same day (or next day if it's a Sunday!). 

750 sheets of paper will fit into the Priority Mail Flat Rate box. This means your document can be 750 single-sided pages or 1500 double-sided pages.

Guaranteed next day service is available for most major metropolitan ZIP Codes. Delivery guarantees for destinations outside of urban areas typically reflect two day delivery and up to three days for rural destinations. If you have questions about Priority Mail Express delivery guarantees for specific ZIP Codes, please contact Customer Support at 866-665-2787 or support@click2mail.com. Our hours of operation are Monday - Friday, 9 AM to 8 PM Eastern.

Orders placed by 10 AM Eastern on a USPS business day are printed and mailed the same day. Orders placed after 10 AM Eastern on a USPS business day and orders placed on a nonbusiness day are printed and mailed the next USPS business day. USPS business days are Monday - Saturday with the exception of USPS holidays.

Yes. Signature confirmation is available on all Priority Mail Express® letters for an additional fee.