USPS Informed Visibility

How We Get Your USPS Mail Scans Delegated to Us

To track your mail through USPS Informed Visibility, your mail owner account needs to delegate scan visibility to BulkMailTracker / Millennium as your tracking provider or mailing agent.

What delegation means

USPS mail tracking uses business identifiers called a CRID and MID.

CRID — Customer Registration ID
MID — Mailer ID

Most mail owners already have these if they use gateway.usps.com (USPS Business Customer Gateway), PostalOne!, permits, nonprofit authorization, or a mailing vendor.

Delegation allows us to receive scan data for the mailings we are tracking. It does not give us control of your USPS account — it simply allows the scan data needed for tracking and reporting to flow to us.

What you need before we can receive scans

Your Business Customer Gateway login

Your CRID

Your MID

Permission to delegate Informed Visibility scan data

The company/account you want to authorize as your tracking provider

How USPS data delegation works (CRID first, then MID)

USPS Informed Visibility delegation is set up by locating your CRID (Customer Registration ID) for the permit or business location first. After your CRID is found in USPS systems, the mail owner selects which MID(s) (Mailer IDs) should be added to the tracking feed.

BulkMailTracker does not start delegation by searching for a MID alone — we need your CRID and the MID(s) printed on the mail you want tracked.

Find your CRID in USPS Business Customer Gateway (account or permit profile). This identifies your business/location in USPS systems.
List every MID (6 or 9 digits) you use on mail jobs you want tracked. View Mailer IDs at mid.usps.com after signing in.
Use the same MID(s) encoded in your Intelligent Mail barcodes for those mailings — scan data only lines up when the delegated MID matches the MID on the mail.
Submit the delegation request form below (or the first-campaign sign-up on the home page).

Multiple MIDs? Enter each one separated by commas or spaces. We will add every MID you list to our IV feed after your CRID is confirmed.

Not sure of your CRID or MID? Submit the form below and check I need help finding or setting these up — you can submit without CRID/MID values.

Open Business Customer Gateway Open mid.usps.com

Request USPS data delegation

Provide your CRID and Mailer ID(s), or tell us you need help locating them. We will follow up by email.

Company name Contact name Email Phone CRID used for your permit or business location Your CRID identifies the business/location in USPS systems. This is usually the first value needed when setting up data delegation. Mailer ID(s) used on your mail jobs USPS delegation usually starts by locating your CRID first. After we find the CRID, we select the MID or MIDs that should be added to our tracking feed. Enter every MID you use for the mail jobs you want tracked. Permit number (optional) Permit city / state (optional) Notes / questions (optional)

I do not know my CRID

I do not know my MID

I need help finding or setting these up

No postal sorting software? See your tracking options