What is Saturation Mail?
Saturation mail is a postage discount tier for businesses that mail to at least 90% of residential addresses or 75% of total addresses on a given mail carrier route. Unlike EDDM Retail, it requires a mailing list and a USPS postage permit, but it often yields the absolute lowest postage rates available.
Maximum Savings
The lowest possible cost per piece for high-volume mailers.
Broad Reach
Perfect for national or regional "blanket" coverage.
Key Differences at a Glance
Postage Rate
EDDMVery Low (Retail Flat Rate)
SaturationLowest Possible (Standard Mail)
Address Requirements
EDDMNone (Uses 'Local Mail Customer')
SaturationMailing List Required ('Resident')
Daily Limits
EDDM5,000 pieces per Zip Code
SaturationNo daily limits
Permit Required
EDDMNo (Retail) / Yes (BMEU)
SaturationYes (Standard Mail Permit)
Preparation
EDDMSimple (Bundles of 50-100)
SaturationComplex (Full Sorting/Traying)
Which One Should You Choose?
Choose EDDM if...
- You are a local small business.
- You want to avoid list and permit costs.
- You are sending under 5,000 pieces per day.
- You want to handle the drop-off yourself.
- Simple preparation is a priority.
Choose Saturation if...
- You have a USPS mailing permit.
- You are mailing high volumes (10k+).
- You need the absolute lowest postage rate.
- You are mailing multi-zip code campaigns.
- You use a mail service provider (like Catdi Printing).
Frequently Asked Questions
Common questions about EDDM and Saturation mailing logistics.
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Serving Communities Nationwide
Printing and direct mail services available across Texas and the United States