As per the subject, I have tried many Android APPs to find an alternative to GMAIL that works well with SmarterMail (I have tried Spark, Spike, BlueMail, Newton, Aqua and some others), but it seems that all of them have malfunctions or limitations ...
The ideal app, in addition to emails, must have the ability to synchronize AT LEAST the calendar and contacts (if possible also Activities and Notes).
The only App that I have found and that works quite well is NINE (also for Activities and Notes!), which unfortunately is a paid app.
The question is: do you have an alternative android APP that works well with SmarterMail mail, calendar and contacts (no Gmail and no Outlook...)?