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Lob's API documentation is designed to be completely self-serve, but that doesn't mean we don't love hearing from you. Whether you're new to Lob, or you're continuing to integrate with our services, we want to provide you with expert help. Take a look at the FAQs below, send us an email, or purchase a Premium Support plan for a dedicated phone line and further support.

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Top FAQs

What are Lob's Platform Editions?

Lob's Platform Editions are recurring subscriptions that give you access to our Print & Mail API platform and features. Each Lob Edition corresponds with a different set of platform features and mailing capacity.

Is there a way to upload a CSV of my address list and documents?

Lob currently does not offer a method to bulk upload addresses or mailings via the Lob dashboard. If you are looking for a tool to use our service without integrating with our API directly, we encourage you take a look at our various integrations and partner applications.

Can I track my mail?

Each First Class postcard, letter, and check sent through Lob has a unique IMb barcode that gets scanned by USPS as it travels through the mail stream. You can access this scan event data via our API or Dashboard, or get notifications for them by creating webhooks. Below is a breakdown of each scan event label and description:

  • In Transit - The mailpiece is being processed at the entry/origin facility.
  • In Local Area - The mailpiece is being processed at the destination facility.
  • Processed for Delivery - The mailpiece has been greenlit for delivery at the recipient's nearest postal facility. The mailpiece should reach the mailbox within 1 to 2 business days of this scan event.
  • Re-routed - The mailpiece is re-routed due to recipient change of address, address errors, or USPS relabeling of barcode/ID tag area.
  • Returned to Sender - The mailpiece is being returned to sender due to barcode, ID tag area, or address errors.

For First Class Mail, you will usually see your first scan event around 3 business days after the piece has been scheduled to go out.

Please note that IMb tracking data cannot be accessed via USPS's website and IMb tracking data not available for the following products:

Do your prices include the cost of shipping?

Yes - the prices you see on Lob.com are all-in costs; they include the cost of printing, postage, and delivery.

How long until my mail is delivered?

Delivery times will vary depending on product and destination. Domestic delivery times are listed below:

  • Letters - 4 to 6 business days
  • Postcards - 4 to 6 business days
  • Area Mail - 6 to 10 business days
  • Checks - 4 to 6 business days

International mailings will take an additional 5 to 7 days.

*Delivery times above are estimates; Lob uses USPS as our primary carrier and USPS experiences delays from time to time. To see the most up-to-date status of your mailing, check the tracking information of your particular mailing through a GET request or on your Dashboard.

Is Lob available outside of the US?

Lob can mail all over the world. International mailings originate from the US and are mailed via USPS First Class Mail.

If you are looking to originate mail in a different country, please contact us.

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