Mini Envelope for ‘Emails’ Stickers – Vector Design Prompts

Create a series of clean, high-contrast vector mini envelope icons designed specifically for die-cut stickers. Each design should be minimalist, with crisp outlines and no shading or gradients, placed on a pure white background. Incorporate placeholder text such as [Email Subject Here], [Sender Name], or [Subject Line] to allow customization. These prompts focus on creating simple, recognizable, and adaptable envelope icons perfect for email or message-themed sticker sets.