> For the complete documentation index, see [llms.txt](https://help.openletterconnect.com/olc-help-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.openletterconnect.com/olc-help-docs/mailing-and-delivery.md).

# Mailing & Delivery

- [Why some postcards arrive smudged or marked?](https://help.openletterconnect.com/olc-help-docs/mailing-and-delivery/why-some-postcards-arrive-smudged-or-marked.md)
- [Do letters get damaged too?](https://help.openletterconnect.com/olc-help-docs/mailing-and-delivery/do-letters-get-damaged-too.md)
- [Printing Quality & Standards at OLC](https://help.openletterconnect.com/olc-help-docs/mailing-and-delivery/printing-quality-and-standards-at-olc.md)