sendMail

fun <T : CSActivityView<*>> T.sendMail(emails: List<String>, subject: String, body: CharSequence, attachment: File)

fun <T : CSActivityView<*>> T.sendMail(emails: List<String>, subject: String, body: CharSequence, attachments: List<File>)

fun CSActivityView<*>.sendMail(picker: String, to: String, subject: String? = null, body: String? = null)

fun CSActivityView<*>.sendMail(pickerTitle: String, to: Array<String> = emptyArray(), cc: Array<String> = emptyArray(), bcc: Array<String> = emptyArray(), subject: String? = null, body: String? = null)