> Started an upgrade but it still shows pending? Find your open invoice, pay by card or PayPal, and get your new plan active.

Source: https://mailbux.com/blog/email-guides/finish-pending-upgrade-unpaid-invoice

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# Upgrade Pending? How to Finish an Unpaid Invoice

November 9, 2026•4 min read
When you start an upgrade, the dashboard creates an invoice for it. The upgrade is applied once that invoice is paid. If you closed the payment window, the card was declined, or you didn't finish in PayPal, the invoice is still unpaid. Until it is paid, your service stays on its current plan.
This guide shows how to spot a pending upgrade, find the open invoice and pay it, so your new plan becomes active.

## How to tell an upgrade is pending

- A yellow **Payment due** banner at the top of the dashboard says you have an unpaid invoice, with **Pay now** and **View invoices**.
- On your plan page, the **Upgrade** button now says **Complete payment**.

Mailbux dashboard with a yellow Payment due banner and the Pay now and View invoices buttons
Plan page where the Upgrade button has changed to Complete payment

## Step 1: Find your open invoice

Click **View invoices** in the banner, or open **Invoices** from the dashboard. The page shows your total due and how many invoices are unpaid.
Invoices page with a Pay outstanding button and one upgrade invoice marked Payment Pending (amounts hidden)
Open the upgrade invoice. Its line reads "Upgrade ... to ..." and its status is **Payment Pending**.
Unpaid upgrade invoice with the status Payment Pending, a Pay button and a Cancel this invoice link (invoice number and amounts hidden)

## Step 2: Pay it

Click **Pay** on the invoice. You can also use **Pay now** in the banner, **Pay outstanding** on the Invoices page or **Complete payment** on your plan page. They all lead to the same payment window.
Payment window with Credit Card (Recommended), PayPal and Credit Card one-time payment, and a Pay Now button
Choose:

- **Credit Card (Recommended)**: saves the card for automatic renewals.
- **PayPal**: a one-time payment.
- **Credit Card, one-time payment**: pays this invoice only.

Click **Pay Now**. If your bank asks you to confirm the payment, for example in its app or with a code, finish that step before you close the window.
Tip: if you're not sure an email is really from us, sign in at [dash.mailbux.com](https://dash.mailbux.com) yourself and pay from **Invoices**. See also [how to check a link before clicking](https://mailbux.com/blog/email-security/check-link-before-clicking-email).

## If you paid with PayPal but the invoice still says unpaid

Refresh the invoice page. Still **Payment Pending**? Open a support ticket with the invoice number. Don't pay twice.

## If your card was declined

Check the card number, expiry date and billing details, and that the card allows online payments. Then try again, or pay with PayPal instead.

## Step 3: Check the plan is active

When the invoice is paid, the **Payment due** banner is gone, the invoice shows as paid, and your plan page shows the new plan name.

## What if I don't pay it?

Until it is paid, your service stays on its current plan.

## Changed your mind?

Open the invoice and click **Cancel this invoice** under the Pay button. Cancelling the invoice also cancels the upgrade. Your service stays on its current plan.

## Need help?

Starting from scratch? Read [how to upgrade your Mailbux Free plan to a paid plan](https://mailbux.com/blog/email-guides/how-to-upgrade-free-to-paid-plan). For anything else, open a support ticket from your dashboard and include your invoice number. New to Mailbux? [Create a free account](https://dash.mailbux.com/register).

## Put this guide to work

Business email on your own domain, free to start — unlimited business mailboxes on paid plans, no per-mailbox pricing.
[See pricing](https://mailbux.com/pricing)

## Related guides

[4 min read ### How to Upgrade Your Mailbux Free Plan to a Paid Plan Ready to move from Mailbux Free to a paid plan? Follow each screen: click Upgrade, choose a plan and billing cycle, pay by card or PayPal, and check the new plan is active.](https://mailbux.com/blog/email-guides/how-to-upgrade-free-to-paid-plan)

[6 min read ### Invoice Fraud: What to Do When a Supplier Emails New Bank Details A supplier email says their bank account has changed. Learn how the invoice fraud scam works, the red flags, the call-back check that stops it, and what to do fast if you already paid.](https://mailbux.com/blog/email-security/invoice-fraud-bank-detail-change-email)

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[5 min read ### How to Fix Email Not Receiving on Custom Domain Troubleshoot and fix common reasons why your custom domain email isn't receiving messages, from DNS issues to full mailboxes and spam filters.](https://mailbux.com/blog/email-guides/fix-email-not-receiving-custom-domain)

[7 min read ### How to Set Up CalDAV Calendar Sync with Mailbux (Any Device) Managing a busy schedule across multiple devices can be frustrating. You add a meeting on your phone, but it does not appear on your laptop. You update an event on your desktop, but your tablet still shows the old time.](https://mailbux.com/blog/email-guides/caldav-calendar-sync-setup-guide)

[9 min read ### How to Block Spam and Phishing Emails with Mailbux Filters (Step-by-Step Guide) Spam and phishing emails are more than an annoyance — they are a genuine threat to your business. Every day, attackers send millions of fake emails impersonating companies like Meta, PayPal, banks, and shipping carriers.](https://mailbux.com/blog/email-guides/block-spam-phishing-emails-mailbux-filters-guide)

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