Blog Posts

Boost Unlimited FUP Plan Sales with Top-Up Feature

May 9, 2026

Boost your Unlimited FUP Plan sales with flexible day extension capability.

👋 Introduction

Hi Partners,

We’re excited to introduce a major upgrade to our Unlimited (Daily / Daypass) eSIM products:

🎉 Top-Up Function is now available for all Daily Plans
(covering 1000+ SKUs across 170+ global regions)

Now you can extend plan validity days anytime via top-up, without changing the daily high-speed data allowance.

🌍 About Unlimited (Daily) Plans

“Unlimited” eSIM plans refer to Data Per Day (Daypass) models:

High-speed data resets every day
After reaching the daily threshold, speed is throttled
(typically 256kbps–2Mbps depending on plan)
Number of days can be flexibly configured via:
- Console
- API (periodNum parameter)

📦 Supported Standard Daily Plans

Our standardized Unlimited (Daily / Daypass) SKUs include:

Standardized unlimited eSIM plans includes:
500 MB / Day or 500 MB 7Days for trial plans
1GB / Day FUP (256-512kbps or 1mbps / 2mbps )
2GB / Day FUP (256-512kbps or 1mbps / 2mbps )
3GB / Day FUP (256-512kbps or 1mbps / 2mbps )
5GB / Day FUP (384-512kbps )
10GB / Day FUP (384-512kbps )

🔖 SKU Slug Format

Examples:

CN_1_Daily / CN_1_Daily_1Mbps
CN_2_Daily / CN_2_Daily_1Mbps
CN_3_Daily
CN_5_Daily
CN_10_Daily

🔁 How Daypass Top-Up Works

The new Top-Up feature allows seamless extension of validity days:

✅ What it does

Extends validity days only
Days are stacked cumulatively
Works via API or Console

❌ What it does NOT do

Does NOT increase daily high-speed data (GB/day remains unchanged)
Does NOT restore speed if already throttled

⚠️ Important rules

Top-up must match the same base plan SKU
- e.g. CN_1_Daily → only CN_1_Daily can top-up
- CN_1_Daily_1Mbps → must top-up same variant

💰 Pricing Logic (Important)

Top-up pricing follows the same price structure as base plans.

If both exist:

CN_1_Daily
CN_1_Daily_1Mbps

👉 Top-up will follow CN_1_Daily_1Mbps pricing configuration

Pricing is aligned with daily discount coefficients.

📌Discount program for unlimited plans:

1 – 4 Days : 4% off ;
5 – 9 Days: 8% off:
10 – 19 Days: 11% off;
20 – 29 Days: 15% off;
30 – 365 Days: 18% off

🔌 API Integration Guide

To use Top-Up API, include the following parameters:

			
{  
  "esimTranNo": "26032612340001",  
  "iccid": "",  
  "packageCode": "CN_1_Daily",  
  "periodNum": "2",  
  "transactionId": "helentrialdaypasstopup"
}

		

Key Fields Explained

packageCode: SKU slug (same as base plan)
periodNum: Number of days (supports 1–365 days)
esimTranNo: Original eSIM transaction number

🔗 API Endpoint (supportTopUpType=3)

[API endpoint: TOPUP a Plan]

🖥 Console Support

Top-Up functionality is also available in the Console:

Go to action ➡️ topup a plan once a plan is purchased (Top-up can only be performed after successful plan purchase and when the eSIM status is Active (i.e., within its validity period and not expired).
View recharge history
Track updated validity period
Monitor plan status in real time

📢 Important Reminder (Travel Season Ready)

With rapid expansion of our global coverage, we recommend partners:

✅ 1. Sync packages daily

Use:

Get All Data Packages API

✅ 2. Track updates

Follow our changelog regularly: https://app.esimaccess.com/public/pricing-history

✅ 3. Subscribe to price alerts

Stay updated automatically:
👉 [Subscribe Here]

🚀 Summary

🎉 All Unlimited Daily plans now support Top-Up
📆 Extend validity days via API or Console
🌍 Works across 1000+ SKUs and 170+ regions
🔁 Fully compatible with existing eSIMs (even “New” status)
💰 Pricing follows base plan logic with discount tiers:

Discount Structure

1–4 days: 4% off
5–9 days: 8% off
10–19 days: 11% off
20–29 days: 15% off
30–365 days: 18% off

🤝 Let’s Build Better Connectivity Together

If you have any questions or need integration support, feel free to reach out anytime.

Best regards,
eSIM Access Team

🔗 Explore More

👉 Book a meeting and explore partnership opportunities.

Boost Unlimited FUP Plan Sales with Top-Up Feature