When Is Certified Mail Legally Required?
Know when certified mail is legally required vs recommended. Complete guide to IRS, employment, consumer protection, real estate, and state law requirements.
By Postmarkr Team
Blog
Tips, guides, and insights about sending physical mail online.
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EDDM Retail vs BMEU: What's the Difference?
Understand the differences between EDDM Retail and EDDM BMEU including volume limits, permit requirements, costs, and which option fits your business.
By Postmarkr Team
Certified Mail for IRS: Protect Your Filing Deadlines
Use certified mail to prove IRS filing dates under Section 7502. Essential for tax returns, appeals, and responses.
By Postmarkr Team
Certified Mail for Landlords: Legal Compliance Guide
When landlords should use certified mail: evictions, security deposits, lease notices. Protect yourself legally.
By Postmarkr Team
Certified Mail for Eviction Notices: State Requirements
State-by-state eviction notice requirements for certified mail. Learn when certified mail is legally required, optional, or insufficient for proper service.
By Postmarkr Team
How to Track Certified Mail (+ What Each Status Means)
Track certified mail using your 22-digit number on USPS.com, the mobile app, or by text. Complete guide to tracking statuses and what each one means.
By Postmarkr Team
Payment Terms for Mailed Invoices: Net 30 and Discounts
Set effective payment terms for mailed invoices. Covers Net 30 vs shorter terms, early payment discounts, late fees, and how to communicate terms clearly.
By Postmarkr Team
Past-Due Invoice Letters: Collection Notice Templates and Timing
Write effective past-due invoice letters that get results. Includes collection notice templates, escalation timing, and tone guidance for maintaining relationships.
By Postmarkr Team
EDDM Requirements Checklist: Everything You Need Before Mailing
Complete checklist of USPS EDDM requirements covering size specifications, indicia, addressing, bundling, paperwork, and drop-off procedures to ensure acceptance.
By Postmarkr Team
Why Businesses Still Mail Invoices: Compliance and Payment
Discover why businesses still mail paper invoices. Learn about compliance requirements, proof of delivery benefits, and when mailed invoices outperform email.
By Postmarkr Team
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