Vote-by-Mail Solutions - We make Vote-by-Mail envelopes and mailing to your stakeholders as easy as a phone call (434-984-0006) or email (sales@msvonline.com). More details below. Each set has 3 envelopes: One Outer Envelope that carries all the Vote-By-Mail materials. The outer envelope (OE) can have a window of almost any size in a runnable position if required whether on the front, back or both front and back. [largest envelope] One Reply Envelope to bring the “ballot box” envelope back to the precinct. [2nd largest envelope] One “oath” envelope that actually holds the voter’s ballot and provides secrecy. [smallest envelope] Envelopes can be printed in one or two colors on the front and back (same colors on both).