Straight flap envelopes

(255 products)

Straight flap envelopes feature a clean, linear design and a secure seal, crafted from premium 80–160 g/m² paper or cardstock to safeguard your mailings. Available with self-adhesive or gummed closures, they’re ideal for business correspondence, wedding invitations, invoices, and greeting cards. Choose from multiple sizes, finishes (matte, glossy, pearlescent), and window or non-window options to match any branding or personal style. Their sleek appearance and versatile functionality make them perfect for corporate mail, event stationery, and high-volume mailings—shop now for bulk discounts, fast shipping, and professional-grade packaging!