No, the Starter plan does not support sending 25k emails per month. The Starter plan is available in two credit quantities:
** 24K credits per year (2K credits per month)
** 36K credits per year (3K credits per month)
For your needs, you may want to consider the Explorer plan which offers higher credit quantities:
** 120K credits per year (10K credits per month)
** 168K credits per year (14K credits per month)
* 240K credits per year (20K credits per month)