Skip to main content
Postmarkr

Letters

Guides for printing and mailing business letters including invoices, notices, and correspondence.

Page 1 of 3

ARTICLES

Business letter in an envelope beside a navy case folder and fountain pen.

LEGAL ·

Letter to Opposing Counsel and Client Letters: Six Templates and How to Mail Them

Six law-office letter templates (cover letter and meet-and-confer letter to opposing counsel, an Illinois Rule 201(k) letter, an engagement checklist, a closing letter with a file-retention notice, and a letter of representation to an insurer), each with the rule behind it, and how to mail them.

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.

Letter and envelope beside a laptop in a British home office.

LETTERS ·

Sending a Letter From the UK to the USA

Royal Mail price and delivery aim for a letter to the USA, the address line it needs, and when a copy printed in the US is the simpler route.

Stack of security envelopes beside illustrative payroll forms and a green folder.

SMALL BUSINESS ·

How to Mail W-2 Forms to Employees: Who Gets Paper, Which Pages, and by When

Who still needs a paper W-2, which pages of the IRS PDF go in each employee's envelope, the Monday, February 1, 2027 furnishing date for tax year 2026, what the IRS requires when an envelope comes back, and what stays in your files.

Envelope beside a laptop and globe showing North America.

LETTERS ·

How to Send a Letter to the USA from Abroad

Choose between posting your original envelope internationally and having a document printed inside the US. Check the return address, full cost and mailing records before deciding.

Editorial illustration of blank document sheets beside two envelopes and a green paper clip.

SMALL BUSINESS ·

How to Mail 1099 Forms to Contractors From the PDFs You Already Have

Which pages of a 1099-NEC go in each contractor's envelope, how to make one clean PDF per contractor so the form doesn't print blank, and a tax year 2026 mail-by calendar with Copy B due Monday, February 1, 2027.

Editorial illustration of a blank letter and envelope beside a model townhouse.

LETTERS ·

HOA Violation Letters: One for Each Step, From Courtesy Note to Closure

Five HOA violation letters, one for each enforcement step: a table to pick the right one, fill-in text for all five, and a field map for mailing a batch from your inspection log.

Editorial illustration of a blank letter and envelope beside a key and unnumbered calendar.

LETTERS ·

Late Rent Notice: What to Send Before a Pay-or-Quit Notice

Unless your lease or the law says otherwise, a late rent notice is a courtesy letter you can word and send however you like. Here's how to tell which one you're sending, set a pay-by date the mail can meet, and send one letter or a whole building's worth.

Illustration of a letter in an envelope beside house keys and a green pen.

LETTERS ·

Letter to Landlord Templates: Repair Request, Follow-Up and Notice to Vacate

Copy-ready letters to your landlord for a repair, a follow-up when nothing happens, and a notice to vacate. Check your lease and state rules, then mail each one with the record you need.

Showing 1-10 of 28 posts

Turn the guide into a mailed letter

Send your first mail in under 2 minutes.

Send Your First MailWhat a letter costs