The first open
Timestamped to the minute, so you know exactly how long your invoice sat before anyone looked at it.
Read receipts for invoices
Know the moment
your invoice is opened.
Upload the PDF you already have. Important Invoice turns it into one link you can text or email — and prints you a receipt every time your client opens it, how long they stayed, and whether they hit print.
Free to use · No card required · Your PDF stays your PDF
Invoice 0412
HENKE ROAD DESIGN CO.
Site build — phase two1,800.00
Copy & asset pass420.00
Hosting, 12 months180.00
Amount due$2,400.00
Receipt#0412
“I never got it” stops being a thing anyone can say.
YOU SENT IT AT 9:02. THEY OPENED IT AT 9:06. A LINK FROM IMPORTANTINVOICE.COM IS HARD TO SCROLL PAST.Three steps, about a minute
Your invoice, your PDF, one link that reports back.
We don't build the invoice for you — keep using whatever you already use. It handles everything that happens after you hit send.
Upload
Drop in the PDF
Drag the file into your console and add the client's name, the amount, and a due date. That's the whole form.
Send
Share one link
You get a clean link to copy, text, or paste into the email you were already writing. It opens instantly on any phone.
Watch
Read the receipt
The card goes from Sent to Opened the second they land on it, and keeps a running log of every visit after that.
What lands on your tape
Enough to follow up without guessing.
Every open after that
Four visits in one afternoon usually means it's moving through an approval chain. One visit and silence means something else.
Time on the page
Six seconds is a glance. Two minutes is someone reading line items and checking your math.
Print and download
A print is the strongest signal you'll get short of payment — it usually means it's headed to whoever cuts the checks.
Device and browser
Opened on a phone at 7am, reopened on a desktop at 9. Tells you when you're actually reaching their desk.
Withdraw anytime
Sent the wrong version? Pull the link and the page goes dark immediately, without deleting your record of it.
Straight answers
Questions people actually ask.
Does my client have to sign up for anything?
No. They tap the link and the invoice is right there with a print button at the top. No account, no app, no download prompt.
Does the client know I'm tracking opens?
Yes — a short line at the bottom of the invoice page says the sender is notified when it's opened. We'd rather be upfront than clever about it, and in practice nobody minds.
What if they open it twice by accident?
Every visit gets its own line on the tape with its own timestamp and how long it lasted, so a stray double-tap is easy to tell apart from a real read.
Can I send the same invoice to two people?
You can, but the receipts will blend together. Upload it twice and send a separate link to each person if you need to tell them apart.
What happens to my PDF?
It's stored on your own Firebase project and served straight to the person holding the link. Delete the invoice and the file goes with it.
Send the next one through Important Invoice.
Takes about a minute, and you'll never have to open with “just checking you got this” again.
Open the console