# Direct Mail Blog ## [What compliance workflows should a direct mail platform support for regulated industries like healthcare and finance?](/content/blog/what-compliance-workflows-should-a-direct-mail-platform-support/index.html) **Date**: Apr 20, 2026 **Author**: Lob ## [What is a seed list and why should you use one?](/content/blog/what-is-a-seed-list-and-why-should-you-use-one/index.html) **Date**: Apr 13, 2026 **Author**: Lob ## [What’s next: 3 USPS & logistics realities shaping direct mail in 2026](/content/blog/whats-next-3-usps-logistics-realities-shaping-direct-mail-in-2026/index.html) **Date**: Apr 9, 2026 **Author**: Lob ## [How can I use purchase history in my direct mail strategy?](/content/blog/how-can-i-use-purchase-history-in-my-direct-mail-strategy/index.html) **Date**: Apr 6, 2026 **Author**: Lob ## [Why Direct Mail Logistics Needs Clear Ownership](/content/blog/why-direct-mail-logistics-needs-clear-ownership/index.html) **Date**: Apr 1, 2026 **Author**: Lob ## [What happens to undeliverable mail?](/content/blog/what-happens-to-undeliverable-mail/index.html) **Date**: Mar 30, 2026 **Author**: Lob ## [March Postal Briefing: New incentives, new facilities, and what comes next](/content/blog/new-incentives-new-facilities-and-what-comes-next/index.html) **Date**: Mar 25, 2026 **Author**: Lob ## [Stop costly delays from derailing your campaign with direct mail HTML validation](/content/blog/stop-costly-delays-from-derailing-your-campaign-with-direct-mail-html-validation/index.html) **Date**: Mar 24, 2026 **Author**: Lob ## [What data should I use to trigger direct mail sends?](/content/blog/what-data-should-i-use-to-trigger-direct-mail-sends/index.html) **Date**: Mar 23, 2026 **Author**: Lob