DocuPost vs Lob Address Verification

DocuPost lets users upload or compose documents online and have letters, postcards, and checks printed and mailed. Letters can be sent individually or in bulk, in black-and-white or color and single- or double-sided, with mail-merge tokens. The letter service accepts documents up to 500 pages. Mailing options include USPS First Class, Standard Class, international mail, Certified Mail, return receipts, and Priority Mail Express, described as arriving in as little as 1–2 days. Tracking options include USPS Tracking, Certified Mail, Priority Mail, and return receipts. DocuPost describes its letter service as HIPAA-compliant with a signed BAA, while its privacy policy says it cannot guarantee the safety or security of personal information. Listed integrations include Zapier, Clio, FileVine, HubSpot, QuickBooks Online, Xero, Google Docs, and a developer API. The Free plan has no send limits but charges per mailpiece, includes DocuPost branding on cover letters, and retains documents for 90 days. Premium costs $9.95 a month; Enterprise costs $99.95 a month.

Lob Address Verification checks address data to help determine whether addresses can be delivered. Its APIs validate one address or a batch, and Lob says it can also check and standardize addresses while customers enter them on a website. Results can add delivery and geographic details, including ZIP+4, carrier route, address type, latitude and longitude, plus a confidence score based on its mail delivery data. The product page lists delivery data for more than 240 global territories and USPS CASS certification. Integrations include AV Elements, Shopify Address Cleanser, Airtable Address Cleanser and Zapier; the interactive demo provides examples in cURL, TypeScript, Node, Ruby, Python, PHP, Java, Elixir and C#. Lob says it encrypts data in transit with TLS 1.2+ and at rest with AES-256, and provides automatic redaction and data retention policies. Developer has no subscription fee; listed paid pricing starts at $20/mo (annual). A 30-day Enterprise trial is available for high-volume senders; print and postage are billed separately at discounted Enterprise rates.