| Subject | English | Slovak |
| comp., MS | digital envelope | digitálna obálka (Private messages encrypted using the recipient's public key. Enveloped messages can only be decrypted by using the recipient's private key, allowing only the recipient to understand the message) |
| comp., MS | envelope journaling | denník s prílohami (A type of message journaling in which the original unaltered message is included as an attachment in the journal report) |
| fin. | financial envelope | finančné krytie |
| transp., avia. | flight envelope | letová obálka |
| comp., MS | message envelope | obálka správy (" The information contained in an e-mail message that is required to send and deliver a message between messaging servers by using SMTP protocol commands. The message envelope contains the sender e-mail address and the recipient e-mail address information. Recipients never see the message envelope, because it is not part of the message content, and it is discarded when the message reaches its destination. The X.400 messaging standard equivalent to the message envelope is called the "P1 header." The message envelope is often referred to as the "P1 header.") |
| comp., MS | message transfer envelope | prenosová obálka správy (A MAPI message that holds the delivery information for a message) |
| transp., avia. | operational envelope | prevádzková obálka |
| commun., el. | peak envelope power | špičkový výkon obálky |
| commun., el. | peak envelope power of a radio transmitter | špičkový výkon obálky |
| hobby, agric. | straw envelopes for bottles | obaly |