Toggle navigation
HELP CENTER
Contact Us
API Status
Visit Lob.com
Contact Us
API Status
Visit Lob.com
How can we help?
Lob Basics
Is there a way to upload a CSV of my address list and documents?
Can I track my mail?
How long until my mail is delivered?
View all »
Billing & Pricing
What are Lob's Platform Editions?
Do your prices include the cost of shipping?
I’ve updated my credit card - how can I pay outstanding invoices?
View all »
Postcards
What are these smudges on my postcards?
I can't cancel mail from my dashboard anymore. What can I do?
What are your mailing class options?
View all »
Letters
What is this vertical string of characters/QR code at the bottom left corner of my letters? Can I remove it?
If I send a letter double_sided, what will be the price of my letter?
Does Lob support custom envelopes?
View all »
Checks
Can I send a letter and check in the same mailing?
Can I add a custom signature to my checks?
When I send a check, does Lob debit funds from my account?
View all »
Address Verification
Do you have a Zip Lookup API?
Is your US Address Verification API CASS Certified?
What states does the US Address Verification API support?
View all »
Support
Send Physical Letters Using Webmerge And Lob
What can I do to prevent duplicate mailings from being created?
I am getting a “404 - FORBIDDEN” error. What does this mean?
View all »
Featured Articles
Is there a way to upload a CSV of my address list and documents?
Can I track my mail?
How long until my mail is delivered?
Is Lob available outside of the US?
What are Lob's Platform Editions?
Do your prices include the cost of shipping?