Yes, though it's not about taking precedence but about sampling frequency. So for example, if you have 1 GB emails, 10 GB external data, you can instead sample

Yes, though it's not about taking precedence but about sampling frequency. So for example, if you have 1 GB emails, 10 GB external data, you can instead sample your emails twice as much and effectively change the ratio of what the model was trained on from 1:10 to 2:10.