> 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/product-and-order-guide/envelope-options.md). # Envelope Options ### Personal Letter Envelope A personal letter envelope gives your mail a warm, polished feel. It resembles the type of envelope someone might use in everyday life, which makes it approachable and familiar. That familiarity encourages recipients to open it rather than dismiss it as marketing material.

Personal Letter Envelope - A6 Lavender Embossed

Personal Letter Envelope - A6 Blue Mosaic

Personal Letter Envelop - A6 White (Blue Font Phoenix)

Personal Letter - A6 Grey Herringbone (Blue Font Phoenix)

{% hint style="success" %} **Tip for use:** Best for follow-ups, thank-you notes, or softer outreach campaigns where the goal is to build rapport and trust with the recipient. {% endhint %} ### Professional Letter Non-Window Envelope This envelope is all about clean presentation. The address is printed directly on the envelope, creating a uniform and professional look. Unlike windowed options, it removes the sense of “bulk mailing” and instead communicates intentionality. For businesses, this detail can make correspondence feel more serious and official.

Professional Letter Non-Window - 10 Yellow Arrows

Professional Letter Non-Window - 10 Blue Hex

Professional Letter Non-Window - 10 Orange Mosaic

Professional Letter Non-Window - 10 White

{% hint style="success" %} **Tip for use:** Use this for contracts, proposals, or communications with clients and vendors where professionalism and credibility are critical. {% endhint %} #### Real Penned Personal & Personal Letter Envelopes A real-penned personal or personal letter envelope gives your mail a warm, polished feel while still standing out from standard marketing mail. It resembles something someone might send in everyday life, which encourages recipients to open it instead of dismissing it as marketing material. **Availability note:** The Navy Blue envelope style is available only on Real Penned Personal Letter envelopes. #### Real Penned Personal Envelopes

Personal Letter Navy Blue - Lexi Handwritten White Font

RP Personal Letter Envelope - A6 Grey Herringone

RP Personal Letter Envelope - A6 Blue Mosaic

#### Real Penned Professional Envelopes

{% hint style="success" %} **Tip for use:** Best for high-value leads, personal invitations, and relationship-focused campaigns where you want your mail to feel personal, trusted, and worth a closer look, whether you choose a Real Penned Personal or Professional Letter envelope. {% endhint %}