FixShip ‑ Logical Lettermail

Automate Lettermail rates and prevent rate stacking.

by FixShip · Launched: April 2026

5.0 (1) on Shopify

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Stop overcharging for shipping. FixShip hides Lettermail rates automatically if a parcel-sized item is in the cart. Improve checkout conversion today.

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About FixShip ‑ Logical Lettermail

High shipping rates kill conversions for small items. But standard Shopify settings double-charge customers by stacking Lettermail and Parcel rates at checkout, leading to even more abandoned carts. FixShip solves this instantly. Tag your lightweight products, and our logic does the rest: Lettermail pricing appears only when the entire cart is eligible. If a parcel-sized item is added, the Lettermail rate vanishes. Save your margins and your customers' experience. Improve conversions today!

Last verified: August 11, 2026 · Fresh

App details

Developer: FixShip
Category: Orders & shipping
Pricing: Paid
Launched: April 2026
Rating: 5.0 (1) on Shopify

Key features

Stop overcharging for shipping
FixShip hides Lettermail rates automatically if a parcel-sized item is in the cart
Improve checkout conversion today

Integrations with:

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1 plan · 14-day free trial

Standard Plan

$4.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 1 Shopify App Store reviews

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This app paid for itself in just 1 day of sales! We are a gift store with thousands of SKUs and many items we sell could be shipped by lettermail but others cannot due to their size. Our greeting cards and stickers are very popular and we needed a way to ensure those items have an affordable shipping option to reduce abandoned carts and customer concerns. Setup was very simple and it works se...

— Caribou Gifts Inc.

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