Skip to main content
Postmarkr

USPS First-Class Mail Guide (2026)

Navigate current USPS postage rates, delivery speeds, and mailing rules for First-Class letters—or skip the post office entirely.

Need to send a First-Class letter right now? Upload a PDF and Postmarkr prints, stamps, and mails it for $2.05.

Send Your First Mail
Page 2 of 5

ARTICLES

LETTERS ·

How to Send a Rent Increase Notice (With a Letter Template)

What goes in a rent increase notice's envelope, who gets one, how to send it the way your lease names, when to mail it so it arrives in time, and what to keep.

Editorial illustration of envelopes, a red letter sorter and bundled correspondence.

LETTERS ·

CC on a Letter: Where It Goes and How to Write It

Where the cc line goes on a printed letter, how to write it for one name or several, how bcc works on paper, and how each person you copy gets their own mailed copy.

HOA ·

HOA Dues Increase Letter: Template and How to Mail It to Every Owner

A dues increase letter with fields for each owner's unit, new amount and start date. It also covers what goes in the budget mailer, what to post online, and how to mail it to every owner from a spreadsheet.

HOA ·

HOA Special Assessment Letter: Template and How to Mail It to Every Owner

A copy-ready HOA special assessment letter with a payment stub, and the mailing job behind it: one spreadsheet row per owner, each owner's unit, share and due date filled in by mail merge, batches of up to 100 by First-Class Mail, and a record of the mailing.

LEGAL ·

Law Firm Mail Merge Letters: From Word, Clio or Outlook to the Mailbox

Word and Clio merge the letters; neither mails them. Two routes from a merged client letter to a USPS First-Class envelope without the office printer: one PDF per client in Cart, or a letter template plus a CSV for up to 100 clients per batch, with the columns, the proof and the record.

HOA ·

HOA Annual Meeting Notice: Template and How to Mail the Packet

What goes in an HOA or condo annual meeting packet, a copyable meeting notice and proxy cover letter, how to mail the packet to every owner who still gets paper, when to mail it, what to keep, and where to find the official state pages.

LEGAL ·

Notification by Trustee in California: What to Mail, to Whom, and How

The paralegal's mailing job for a California Probate Code 16061.7 notice: who gets one, the required contents and 120-day warning in a copyable notice, the first-class mail line in section 1215, the 60-day timing, the record to keep, and how to mail a dozen from a laptop.

LEGAL ·

Illinois Notice to Heirs and Legatees: Cook County Form Index, Envelopes and Proof of Mailing

The Cook County probate notices a paralegal mails, by form number: who gets each one, what is stapled behind it, the clock printed on the form, the CCP 1000 proof of mailing, the counter checklist for the heirs packet, and creditor notices in one batch from a laptop.

LEGAL ·

Attorney Leaving Firm Letter to Clients: Three Templates and How to Mail One to Every Client

Three client letters for when an attorney leaves the firm, the office moves or the practice closes, written as mail-merge templates with a reply-by date, plus the batch job: build the client CSV, save the template, approve one proof, mail up to 100 per batch, log the replies and keep the record.

LEGAL ·

Demand Letter Template, the Unpaid-Invoice Version, and How to Mail It

A copyable demand letter template and an unpaid-invoice version, how to mail one or several First-Class from a laptop, what to check before you mail (the contract, any statute the lawyer named, the court form), how to set a deadline that survives mailing time, and what to keep in the file.

Showing 11-20 of 41 posts

Turn the guide into a mailed letter

Send your first mail in under 2 minutes.

Send Your First MailWhat a letter costs