Postcard & Mailer Guides

All Postcard Mailer Guides

Direct to Door Mailing Explained, From EDDM Routes to Door Hangers

Direct to Door Mailing Explained, From EDDM Routes to Door Hangers

Direct to door mailing compared: EDDM carrier routes, addressed lists and hand-delivered door hangers, with the size rule, the mailbox law and real print costs.

Marcus Chen
How Double Sided Postcard Printing Works, Front to Address Side

How Double Sided Postcard Printing Works, Front to Address Side

How double sided postcard printing works: what 4/4 means, the address side rules USPS enforces, the coating that blocks addressing ink, and two sided file setup.

Marcus Chen
EDDM Pricing in 2026 and What Each Piece Actually Costs

EDDM Pricing in 2026 and What Each Piece Actually Costs

EDDM Retail postage is $0.260 per piece as of July 12, 2026. See how postage, printing, design and prep add up, and what a full carrier route costs to mail.

Emma Davis
How EDDM Retail Works, What It Limits and What It Costs

How EDDM Retail Works, What It Limits and What It Costs

EDDM Retail needs no mailing permit, caps you at 5,000 pieces per ZIP Code a day, and requires a flat-size piece carrying the printed EDDM Retail indicia.

Tobias Reed
Event Postcards for Invitations, Announcements and Fast RSVPs

Event Postcards for Invitations, Announcements and Fast RSVPs

Event postcards as invitations and announcements: which size to print, when to mail versus hand out, how to word the RSVP, and where the QR code can safely sit.

Jordan Kim
Graduation Announcement Postcard Wording, Sizes and Design That Prints Clean

Graduation Announcement Postcard Wording, Sizes and Design That Prints Clean

Ready-to-edit graduation announcement postcard wording, the sizes that keep the postcard rate, and the design rules that survive a 6 by 4.25 inch card.

Sofia Ramirez
How to Choose a Postcard Printer That Handles Stock, Postage and Mailing

How to Choose a Postcard Printer That Handles Stock, Postage and Mailing

The stock, sizes, postage tiers, mailing services and turnaround terms to check before you pick a postcard printer, with the questions that expose a weak one.

Sofia Ramirez
How to Choose a Variable Data Printing Company That Gets Every Record Right

How to Choose a Variable Data Printing Company That Gets Every Record Right

Variable data printing merges your list into one template. How the merge works, what to ask a VDP company about blank cells, proofs and who mails the job.

Marcus Chen
How to Create Advertising Mailers That Convert

How to Create Advertising Mailers That Convert

Pick the advertising mailer format that fits your postage budget, design the offer side for response, respect the USPS clear zone, and print and mail on one order.

Marcus Chen
How to Design Comment Cards That Customers Actually Fill Out

How to Design Comment Cards That Customers Actually Fill Out

Comment card questions, scales and layouts that get answers, plus the coating and thickness rules that decide whether a mail-back feedback card works or costs extra.

Sofia Ramirez
How to Get a Postcard Sample Before You Print a Full Run

How to Get a Postcard Sample Before You Print a Full Run

Three ways to get a postcard sample: a free stock and finish pack, a free digital proof of your own file, and a short printed run you can hold and mail.

Marcus Chen
How to Get Postcards Printed Overnight Without a Reprint

How to Get Postcards Printed Overnight Without a Reprint

How to get postcards printed overnight: the size that keeps postage cheap, the file setup that avoids a reprint, and where the turnaround clock really starts.

Nadia Petrov
Nadia Petrov
Nadia Petrov Customer Education Writer at 4OVER4.COM

Direct mail still lands when the size, the list, and the offer line up, and stumbles when any one of them is off. These guides cover building or renting a mailing list, EDDM rules, adding a QR code, and the postcard formats that clear USPS and actually get opened.

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