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The BillyPaid Blog

The research behind a better invoicing platform

We're constantly digging into payment benchmarks and data to make BillyPaid the best invoicing platform out there. This is where we share what we learn. Got a stat, a study, or a suggestion of your own? We'd love to hear it .

Email open rate by day of week, 2026 010203040%29.67Mon31.27Tue30.27Wed30.42Thu30.18Fri29.99Sat30.6Sun

Fig. 1: Email open rate by day of week

Most read

Best Day to Send an Invoice: Data Reveals All [2026]

Tuesday emails get opened at a 31.27% rate, the week's highest, according to Omnisend's 2026 analysis of roughly 26 billion sends. Full day-of-week and wording data for getting an invoice opened and paid.

Invoicing 10 min read Updated Sep 2026

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Getting Paid 10 min

Deposit & Upfront Payments 2026: Only 23% of Contractors Collect One [Data Study]

Only 23% of contractors always collect a deposit before starting a job, according to Levelset's 2020 National Construction Payments Report. Full 2026 data on legal deposit caps in California, New South Wales, and Victoria, plus what actually protects a business from a client who disappears before work begins.

Getting Paid 13 min

75% Have Had Retainage Withheld: Milestone Billing 2026 [Complete Guide]

75% of contractors have had retainage, money withheld from a progress or milestone payment until the work is verified, held back on at least one project, according to Levelset's 2022 Construction Cash Flow & Payment Report (519 companies). Full 2026 data on how milestone billing works and what's changing.

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Getting Paid 10 min

Early Payment Discounts 2026: 47% Offered, Only 24% Always Take Them [Full Data]

47% of businesses have received an early payment discount from a supplier in the past year, but only 24% take it every time it's offered, per a PYMNTS/Airbase survey of AP executives. Full 2026 data on discount terms, annualized returns, and why the money gets left on the table.

Getting Paid 11 min

92% of Invoices Are Paid Late: How Many Need a Reminder? [2026 Data]

92% of businesses say their invoices are typically paid after the due date, according to Chaser's 2026 Accounts Receivable Report, and only 8% land on time or early. The full 2026 breakdown of how many invoices need a reminder, and what closes the gap.

Getting Paid 12 min

78% vs 52%: Reminder Frequency After Due Date [2026 Data Guide]

A structured, escalating reminder frequency collects 78% of overdue invoices by day 15, versus just 52% for businesses with no defined schedule, per Chaser's 2026 Accounts Receivable Report. Full 2026 data on how far apart reminders should be spaced after an invoice goes overdue.

Getting Paid 11 min

WhatsApp Invoicing 2026 [Complete Guide]

WhatsApp Pay processed 167.89 million UPI transactions in India in July 2026, more than double the 74.6 million a year earlier, per NPCI data. Full 2026 data on how businesses are using WhatsApp to send invoices, collect payment, and follow up on what's overdue.