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Shippy Tape
shippytape.com › blogs › journal › poshmark-shipping-changes-ground-advantage
Can I Use My Own Packaging on Poshmark? Ground Advantage Rules – Shippy Tape
September 16, 2025 - Ground Advantage Box 2: 14-7/8" x 7-3/8" x 5-1/4" (Order in quantities of 25) Ground Advantage Padded Poly Envelope 1: 12-1/2" x 9-1/2" (Order in quantities of 10) Ground Advantage Poly Envelope 3: 14" x 17" (Order in quantities of 50) Ground ...
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Poshmark
support.poshmark.com › s › article › 160939138
What kind of box can I use to ship out my order?
Any box can be used to ship a Poshmark order as long as the box does not exceed the maximum parcel dimensions supported by USPS Ground Advantage.
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Reddit
reddit.com › r/poshmark › list of free ground advantage shipping supplies
r/poshmark on Reddit: List of FREE Ground Advantage Shipping Supplies
September 9, 2025 -

Got through to USPS (800-610-8734)

The representative I spoke to was well aware of the free "ground advantage" boxes and mailers. All the following come in packs of 25. I was able to order 75 of each box and 100 of the mailers. If you need more, you can, that's just how much I wanted to start off with.

Box 1: 12 x 12 x 8.5

Box 2: 14 x 7 x 5

Poly Padded Bubble Bag: 12.5 x 9.5

Paper Padded: 14.5 x 20,5

Polybag: 14 x 17

I was told it would take 7-10 days to arrive.

Of course, they will ask you for your Poshmark closet name. Hope this helps! I was hung up on about 10 times, and finally on hold for about 30 minutes, and had a very helpful and pleasant representative.

And according to the following link on usps website, ground advantage is eligible for free pickup

https://faq.usps.com/s/article/What-is-Package-Pickup#eligibility

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Reddit
reddit.com › r/poshmark › received ground advantage boxes & envelopes today
r/poshmark on Reddit: Received Ground Advantage Boxes & Envelopes today
September 12, 2025 -

I placed my order over the phone with USPS four days ago (September 8), and I received it today, except for the Poly Padded Bubble Bag (12.5 x 9.5), which is scheduled to arrive in three days.

I ordered 75 of each. So 4 days total from the time I placed the order is great.

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Poshmark
blog.poshmark.com › 2026 › 01 › 30 › getting-usps-supplies-just-got-easier
Getting USPS Supplies Just Got Easier - Poshmark Blog
February 27, 2026 - We’re excited to roll out a new update for our seller community: you can now order USPS Ground Advantage supplies directly within the Poshmark app in just a few taps. This new in-app feature makes it faster and simpler to get boxes and mailers for all your Poshmark orders, without phone calls ...
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Podscan.fm
podscan.fm › podcasts › the-i-love-to-be-selling-podcast › episodes › podcast-289poshmark-ground-advantage-boxes-for-ebay-yes-or-no
Podcast 289:Poshmark Ground Advantage Boxes for eBay—Yes or No? - The I Love to Be Selling Podcast - Podcast Episode - Podscan.fm
September 25, 2025 - You don't have to pay for a box. You don't have to pay for a mailer. Because with Poshmark, everything is priority. Now everything is run advantage. ... So what Poshmark did, very smart of Poshmark, they made an arrangement with the USPS for Poshmark sellers to get free. I'm going to say free. That's right. Free. Ground advantage shipping supplies. Not priority. Ground advantage. They're not flat rate. They're ground advantage. Two sizes of boxes.
Find elsewhere
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Reddit
reddit.com › r/poshmark › usps has no idea of the new free ground advantage packaging!
r/poshmark on Reddit: USPS has NO IDEA of the new FREE Ground Advantage packaging!
September 9, 2025 -

After calls dropped dozens of times I finally got through to a postal worker and she admitted that Posh sellers have been blowing up their lines today and they had NO CLUE of the update!

Poshmark has promised the following (I highlighted the important bits) https://blog.poshmark.com/ :

Poshmark has partnered with USPS to provide complimentary Ground Advantage shipping supplies exclusively for Poshmark sellers. Packaging options include a variety of polymailers, padded mailers, and boxes*.* 
To order your packaging supplies, please call 800-610-8734. Please note that you will need to provide your closet name to USPS to confirm you are a Poshmark seller.

Rest assured, USPS is prepared for this transition and ready to support requests from our community.

I particularly love the last line about USPS being prepared for this (REST ASSURED - ha!)!

I found out that the USPS customer service reps have an internal chat group where they can reach out to each other to help with information about things they are getting calls on and the supervisors and team were all in the dark on this.

Call lines are open M-F 7am - 11pm (1-800-610-8734). Lets help each other out and report back if anyone has any success getting the free packaging Poshmark is promising. Otherwise, this means the discounted shipping makes selling MORE EXPENSIVE because we are now providing shipping materials from our own pockets.

****--------------------------------------------------------------------------------------------****

10:15pm EST Update - Finally got through and the phone system seems to have been fixed to not drop calls since the prompts seemed to be different. The rep said they have been overloaded by Posh sellers but they are working through to get to everyone quickly.

Supplies options includes different polymailers, bubble mailers and boxes. Limited selection but its better than nothing.

I asked what they do with our closet info and she said they are supposed to look us up to verify that we have a closet.

I said that the Posh community is generally really great and that I hoped everyone was being nice and patient with them and she said yes, most were lovely. SOOOO ---- lets represent our community well and let them know how appreciative we are of what they do to support us in our sales!

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JustAnswer
justanswer.com › software › tvgms-poshmark-shipping-boxes-usps-advantage-ground.html
Order Shipping Boxes for Poshmark: USPS Help & Guide
I had been using the priority boxes. I need a variety of sizes, about 3 of each size to start. Technician's Assistant: I see you're interested in getting Advantage Ground boxes and need a mix of sizes.
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Linn's
linns.com › news › us-stamps-page › poshmark-offers-exclusive-usps-ground-advantage-packaging-as-it-shifts-shipping-to-cut-costs
Poshmark offers exclusive USPS Ground Advantage ...
September 11, 2025 - Scott Stamp LLC provides authoritative stamp catalogs, philatelic publications, and digital tools, advancing the study and enjoyment of stamps since 1868.
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Poshmark
blog.poshmark.com › 2025 › 09 › 08 › lower-shipping-starting-september-12th
Lower shipping starting September 12th 🚚 - Poshmark Blog
December 17, 2025 - Poshmark has partnered with USPS to provide complimentary Ground Advantage shipping supplies exclusively for Poshmark sellers. Packaging options include a variety of polymailers, padded mailers, and boxes. To order your packaging supplies, please call 800-610-8734.
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Reddit
reddit.com › r/poshmark › anyone running into issues using the ground advantage boxes?
Anyone running into issues using the ground advantage boxes? : r/poshmark
November 18, 2025 - There is nothing on the box specifying Poshmark only. I used one yesterday for an Ebay sale. My postman picks up at my house, so I will see how it goes. And yes, I reuse boxes all of the time. If it is Ground Advantage, it should be allowed. ... Not gonna lie I’ve been dipping into my victory packaging boxes for other platforms when I haven’t had something else that worked better 🫣 but I’ve only done this a couple of times where I was really struggling to find the right size fit.
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Poshmark
support.poshmark.com › s › article › What-is-PoshPost
What is Posh Post?
Shipping Rates Poshmark provides a flat rate of $6.49 for shipping on all orders. This shipping fee is paid for by the buyer. *Based on shipping a 5 lb package using USPS Ground Advantage. Learn more about Posh Post shipping: How to ship a sale What kind of box can I use to ship out my order?
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Reddit
reddit.com › r/ebayselleradvice › free usps ground advantage shipping boxes
r/eBaySellerAdvice on Reddit: Free USPS Ground Advantage Shipping Boxes
September 23, 2025 - I never buy less than 1000 of any size poly bag to get the best deal. ... Ground Advantage. Misuse may be a violation of Federal Law. Please allow 7 to 10 days for delivery. Thank you for choosing the United States Postal Service.” · Nothing at all about them being just for Posh, paid for by Posh…and like free Priority supplies, they are ”property of the United States Postal Service”. And the boxes themselves say nothing at all about Poshmark...
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Poshmark
blog.poshmark.com › 2020 › 04 › 16 › the-poshmark-shipping-packaging-guide
The Poshmark Shipping & Packaging Guide - Poshmark Blog
March 23, 2026 - Once you’ve made a sale, a prepaid, pre-addressed shipping label will be immediately emailed to you. This label, paid for by the buyer, is a USPS Ground Advantage shipping label that covers a package of any size up to 5 lbs.
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TCGPlayer
valueaddedresource.net › poshmark-usps-ground-advantage-shipping-update
Poshmark Strikes USPS Contract Deal, Will Switch Shipments To Ground Advantage For Lower Rates
September 18, 2025 - What’s changing Orders will ship via USPS Ground Advantage, with delivery in 2 to 5 business days. This means that starting September 12, USPS Priority Mail packaging can no longer be used to ship Poshmark orders. If used for orders sold after October 12, a $5 USPS fee will apply. If you already use your own packaging, there’s nothing you need to change. If you’ve been using Priority Mail materials, simply switch to any standard box ...