FixShip ‑ Logical Lettermail

Automate Lettermail rates and prevent rate stacking.

by FixShip · Launched: April 2026

5.0 (1) on Shopify Built for Shopify

Manage this app

Verify your developer profile to earn a badge and build trust for your app.

Stop losing sales to high shipping costs: offer fair Lettermail rates for small items.

Get it on Shopify →

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! Smart Rate Hiding: Lettermail rates available only if all cart items eligible Fast setup: Add lettermail rates & product tags and you're set Non-intrusive: Shopify-native performance invisible to customers Zero-conflict logic: No stacking of shipping costs for mixed carts Show more Show less

Last verified: July 21, 2026 · Fresh

App details

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

Key features

Stop losing sales to high shipping costs: offer fair Lettermail rates for small items

Integrations with:

Checkout

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

Use the arrows to read individual reviews

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.

Overview 1 / 1