Conversion Services
Mail Call Letterpack

[ How It Works ]

Audio Conversion for Mail Call Letterpack to CD, DVD or mp3.

Mail Call Letterpack put an end to the silent letter by allowing users to send a recording of their voice by mail. This format was introduced in 1967 by Smith-Corona and offered Mail Call cartridges that were three, six or 10 minutes in length. These cartridges were reusable and played on an endless loop. A fiancé in another city, a child in college, or a son in the Army — many people made use of Mail Call Letterpack and sent letters containing the joy and warmth of the human voice.

Were you a lucky recipient of a Mail Call cartridge? Perhaps you have a cherished collection of cartridges from a sweetheart or one of your children. These compact cartridges may seem quite robust, but to really preserve and protect their precious cargo, you may want to consider having them converted to a digital format. We offer audio conversion services for many formats including Mail Call Letterpack and would be delighted to tell you more and how we can help you to listen to voices from the past on today’s devices.

Convert the Cherished Voices of Loved Ones to Digital

At Envision, we offer the highest standard in audio conversion services and we have been entrusted with many original Mail Call Letterpack cartridges over the years. These cartridges are processed under very careful conditions so that we preserve your original voice recording while also creating a digital version. You can choose to have your cartridge recordings converted to CD or MP3 and we can give you advice on which format to choose.

Bringing Your Spoken Letters Back to Life

We convert many different formats here at Envision, but it’s often the older formats that we get the most joy from. Mail Call Letterpack illustrates how many of today’s recording formats were inspired and are full of spoken memories that mean so much. Don’t risk losing those memories for good. Speak to experts today to find out how we can bring your spoken letters into the digital age. Let us tell you more about our audio conversion services and how we can assist.

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[ Popular Formats ]

Cassette transfer


lp vinyl transfer


reel-to-reel transfer


convert microcassette to digital


transfer digital recorder

Digital Recorders

convert wire recordings

Wire Recordings

convert mail call letterpack

Mail Call Letterpack

convert DAT tape

DAT Tape

[ Other Services ]


Let us transfer your favorite audio memories onto more durable and modern formats such as MP3 or CD. Once your audio has been digitized, it will be playable and shareable online and between compatible devices. That means you can send it to loved ones around the country. By transferring your audio to a more modern format, you will be extending its life and ensuring it can be played and shared for many generations to come.


If you have a cherished audio recording that you want to share with the world, our audio duplication services are the answer. Thanks to our expertise in all things audio, our fast turnaround and our high-quality services, you can put a smile on your loved ones’ faces every time they press the play button. From a child’s first words on cassette to sharing audio from a training class or seminar, we offer audio duplication for consumers and corporations alike.

Your memories matter and we're here to help.