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Finance

Direct mail guides for financial services, invoicing, billing, and accounts receivable.

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Printed invoice partially inserted into a window envelope beside a calculator.

FINANCE ·

How to Mail a Paper Invoice, Step by Step

A step-by-step guide to mailing a paper invoice: what to print for check payers, where both addresses sit in a #10 double-window envelope, the fold, postage by weight and when to mail it.

Laptop with an illustrative accounting screen beside a printed invoice and window envelope.

FINANCE ·

How to Mail Invoices From QuickBooks Online (and Xero, FreshBooks or Wave)

QuickBooks Online, Xero, FreshBooks and Wave email invoices but don't mail them. Print and mail them yourself, or save one PDF per invoice and upload it. Then mark each one sent so its status matches what you mailed.

Illustration of invoice envelopes in a green mail tray beside a calculator.

FINANCE ·

Postage Options for Mailing Invoices Every Month

Stamps, Stamps.com, a postage meter or a mailing service: what each one costs a month from 10 to 1,000 invoices, and where one starts to beat the next.

Editorial illustration of an envelope tray and paper records beside a calculator.

FINANCE ·

Mailed vs Emailed Invoices: What Each Costs and When to Mail

Emailing an invoice costs almost nothing; mailing one costs $0.92 if you print and stamp it yourself, or $2.05 through Postmarkr. What each costs, and which invoices are worth a paper copy. USPS prices effective July 12, 2026.

An invoice slipping toward a spam folder beside an envelope labeled paper backup.

FINANCE ·

QuickBooks Invoices Going to Spam? 5 Fixes and a Backup Plan

Find out what QuickBooks invoice statuses tell you, check the email route, and confirm the customer has the bill. Includes customer and IT follow-up notes.

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