Lob's API documentation is designed to be completely self-serve, but that doesn't mean we don't love hearing from you. If you can't find what you're looking for, we're here to help. Take a look at the FAQs below, send us an email or a tweet, and we'll get back to you well within one business day.Get In Touch
Delivery times will vary depending on product and destination. Domestic delivery times are listed below:
International mailings will take an additional 5 to 7 days.
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:
Please note that IMb tracking data cannot be accessed via USPS's website and IMb tracking data not available for the following products:
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.
Yes - the prices you see on Lob.com are all-in costs; they include the cost of printing, postage, and delivery.Can I cancel a mailing after it's been submitted?
Once you send a piece of mail to Lob, it is sent immediately - think of our product like email.
Before you start sending any live mailings, we recommend you first test using your test API key. The test API key is intended to allow you to experience the API without actually having anything printed/mailed.
Lob's pricing plans are recurring subscriptions that give you access to our API and advantageous pricing.View All FAQs
If your question isn't answered here, please use the contact form below.