In this section, you will learn details about whitelisted file types, the maximum file size used within sessions or in emails, and last but not least, file storage length within mluvii is listed at the end.

List of whitelisted documents

We collected the file types based on the usage pattern of our current customers and screened each one for possible security risks, which determined the whitelist below.

  • Office [".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".odt", ".ods", ".odp", ".txt"];

  • Image [".png", ".gif", ".bmp", ".jpg", ".jpeg", ".jpe", ".jif", ".jfif", ".jfi"];

  • PDF [".pdf"];

  • VideoUrl [".mp4url", ".videourl"];

  • YoutubeUrl [.youtube];

  • Video [".mp4"];

  • Audio [".mp3", ".m4a", ".aac", ".oga", ".flac", ".wav", ".pcm", ".aiff"];

Maximum file size


Each file has a 25 MB limit.


  • Uploaded files

    • The maximum size in case of uploading a file by an operator is 10 MB

    • If you add an attachment to an email via API, the maximum size is 25 MB

  • Files received

    • When receiving emails, each file has a limit of 25 MB.

The sum of uploaded files has a 10 MB limit when sending e-mails. While receiving e-mails, each file has a 25 MB limit.

Standard file storage period in mluvii

Several types of files are stored within mluvii. Here you can find their standard retention time.

The amount of stored recordings (phone calls) is limited to 25,000 minutes (approximately 417 hours).

Retention of telephone recordings beyond the limit and retention of Audio/Video recordings will be subject to individual pricing.

The average A/V recording size is approximately 2 MB/minute at low resolution and 3.25 MB/minute at high resolution.

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