For SMS, the logs are stored on the devices, not with the providers. So providers have to take an extra effort to listen in. With Discord, it's already in a dat

For SMS, the logs are stored on the devices, not with the providers. So providers have to take an extra effort to listen in. With Discord, it's already in a database. E-Mail does keep logs around but many clients have features to delete mails older than N weeks/months/etc. In discord or telegram, you need to use third party tools for that.