I have no problems or issues with FastMail.fm GUI.
With the exception of a few nits:
1. I think that the columns' arrangement takes some getting used to >> "SUBJECT" field/column should be before the "FROM" field/column.
2. Columns should be adjustable to a certain degree >> The "DATE" field/column is unnecessarily too wide with too many useless white spaces at the end!
But I be not complaining!
