Stripe Invoice Automation: Step-by-Step Tutorial

Stripe's Native Reminders Are Good. But They're Not Great.

If you use Stripe for invoicing, you know it has built-in payment reminders. They work. They're free. And they're limited.

Stripe sends reminders on two occasions:

When you issue the invoice
One day after it's due

That's it. Two reminders. No customization. No flexibility.

Here's the problem: one reminder doesn't collect invoices faster. Studies show you need 3-5 touchpoints to convert a late payment. Stripe gives you two, then you're on your own.

This guide walks you through setting up Nudgexa with Stripe to get the reminders that actually work—without the limitations.

Stripe invoice automation is most valuable when the reminder sequence can keep going after the first overdue notice.

Stripe invoice automation works best when you need more than one overdue touchpoint.

Why Nudgexa + Stripe Beats Stripe Alone

Feature	Stripe Native	Nudgexa + Stripe
Reminder schedule	2 (issue date + 1 day late)	5+ (custom: 3 before, day of, 3/7/14 days after)
Customization	None	Full flexibility
Escalation	None	Aggressive post-due sequence
Setup time	0 (built-in)	5 minutes
Cost	Free	$19-39/month depending on plan
Flexibility	Fixed schedule	Fully customizable

The value: More reminders + customization = faster collections. Better cash flow for just $228-468/year.

Prerequisites

Before you start, make sure you have:

✅ A Stripe account (with invoicing enabled)
✅ A Nudgexa account (sign up free at nudgexa.com)
✅ Admin access to both accounts
✅ 5 minutes

That's it. No coding. No technical setup required.

Step 1: Get Your Stripe API Key

This is the most technical part, but it's actually extremely simple.

Log in to your Stripe dashboard → Go to https://dashboard.stripe.com
Click "Developers" in the top menu
Click "API keys" in the left sidebar
Copy your "Secret key" (the one that starts with sk_live_ if you're on live mode, or sk_test_ for testing)
Keep this safe — don't share it or put it in public places

This key is what Nudgexa uses to read your invoices from Stripe.

Step 2: Connect Nudgexa to Stripe

Log in to Nudgexa → Go to your dashboard
Click "Integrations" or "Settings" → Find "Add Integration"
Select "Stripe"
Paste your Secret key into the field
Click "Connect"
Verify the connection — Nudgexa will test it and confirm it's working

Done. That's the whole integration.

Step 3: Configure Your Reminder Schedule

Now the magic happens. This is where Nudgexa beats Stripe's native reminders.

Go to "Reminder Settings" in Nudgexa
Choose your schedule. Here are the recommended options:

Default Schedule (What We Recommend)

3 days before due date — "Hey, invoice #1234 is due soon"
Day of due date — "Friendly reminder: payment due today"
3 days after due date — "Just checking in: invoice #1234 is now 3 days overdue"
7 days after due date — "We need to discuss this: invoice #1234 is 7 days overdue"
14 days after due date — "Urgent: invoice #1234 is 14 days overdue. Let's resolve this ASAP."

Why this works: Pre-due reminders get invoices in front of clients before they forget. Post-due escalation kicks in when it matters.

Aggressive Schedule (For High-Priority Accounts)

Same as above, but add reminders at day 1 and day 10 after due date
Use this for your biggest clients or recurring payment issues

Minimal Schedule (For Relationships)

3 days before due date
Day of due date
7 days after due date

Use this for clients you worry might take offense.

Customize reminder message — Nudgexa lets you set your own email copy. Make it professional but personal.
Click "Save"

Step 4: Test It

Before this goes to real clients, test it with yourself:

Create a test invoice in Stripe (make it small, like $1)
Set the due date for tomorrow
Wait — Nudgexa will send your first pre-due reminder tomorrow
Check your email — Make sure it looks good and your branding is visible
Adjust if needed — Don't like the wording? Go back and change it

Step 5: Go Live on Real Invoices

Once you're happy with the test, enable it on all real invoices:

In Nudgexa settings, toggle "Enable automated reminders"
Choose which invoices get reminders (new invoices, all invoices, specific clients, etc.)
Review your schedule one more time
Click "Activate"

That's it. From this point forward, every Stripe invoice created will automatically get reminded on your schedule.

Best Practices

✅ Do This

Customize your message — Don't send generic reminders. Add your company name, a personal touch.
Monitor your DSO — Track your days sales outstanding before and after. You should see improvement in 2-3 weeks.
Test your schedule — Some businesses find that early reminders (5 days before) work best, while others prefer more aggressive post-due follow-up. Pick your schedule, test it for 2-3 weeks, then measure DSO improvement.
Keep escalation professional — Your tone should get firmer but never hostile.
Follow up manually too — Automation handles 80%. The last 20% needs a human conversation.

❌ Don't Do This

Don't change your schedule constantly — Give each schedule 30 days to show results.
Don't use only pre-due reminders — You need post-due escalation to really move the needle.
Don't copy-paste our templates word-for-word — Make them yours. Clients spot generic reminders.
Don't ignore follow-ups — If a client says they'll pay Friday, follow up Friday. Automation isn't a set-and-forget tool.
Don't remove Stripe's native reminders yet — Start with both, then decide if you want to disable Stripe's once Nudgexa is working.

What to Expect

Week 1

Invoices start getting Nudgexa reminders
Your team stops manually sending follow-ups
Setup is done; reminders are running automatically

Week 2-3

Early reminders catch invoices before they go overdue
Post-due escalation begins for any late invoices
Pattern starts to show: which timing works best for your clients

Week 4-6

You notice the flow of incoming payments becoming more predictable
Fewer invoices aging past their due date
You have data on which reminder times get the best response

Month 2-3

Collection patterns stabilize
Your team has freed up time previously spent on manual follow-ups
Cash flow becomes more predictable

Stripe Settings to Know About

While Nudgexa handles reminders, Stripe has a few settings worth knowing:

Stripe's native reminders: Can be left on or turned off (your call). Nudgexa will send reminders regardless.
Payment links: Stripe can embed payment links in invoices. Keep this on so clients can pay from the email.
Automatic retry: Some payment methods have Stripe retry on failure. Leave this on (Nudgexa handles reminders for unpaid, Stripe retries for failed card charges).

Troubleshooting

"I'm not getting any reminders"

Check that Nudgexa's connection to Stripe is still active (Settings → Integrations)
Verify your reminder schedule is enabled
Make sure the invoice's due date is set correctly in Stripe

"Reminders are going to spam"

Email deliverability issue. Check your sending email address in Nudgexa
Add your sending email to your DNS SPF records (we have a guide for this)
Consider using your company domain instead of a generic email

"I want to stop reminders for a specific invoice"

In Nudgexa, there's a per-invoice toggle. Turn it off and that invoice won't get automated reminders.

Comparing to Alternatives

Stripe's native reminders: Free, minimal (our alternative)

Chargebee: $299+/month, overkill if invoices are your only need

Wave: Free with Wave invoicing, but relies on Wave's limited reminder features

Nudgexa: $19-39/month, purpose-built for exactly this problem

Using a different payment processor? Nudgexa supports Stripe, Square, QuickBooks, and Wave — the setup process is similar across all platforms.

Next Steps

Gather your Stripe API key (5 minutes)
Sign up for Nudgexa (1 minute)
Connect the integration (2 minutes)
Configure your reminder schedule (5-10 minutes)
Create a test invoice (1 minute)
Go live on real invoices (1 minute)

Total time investment: 15-20 minutes

Expected payback period: 2-4 weeks

Start your 7-day free trial with Nudgexa. Credit card required. Cancel anytime.

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