We apologize for the inconvenience! We are going to support that in the future. Please stay tuned!
If it helps, we also wanted to emphasize that Partiko is a free software and we don't take a cut on authors' earnings. By adding the signature and telling more people about it, our users are essentially helping us grow and growing together with us!
Posted using Partiko Android
That's great, it should be an option for usability, otherwise is noisy spam. There are better ways to promote the project, which is great btw. Thanks!