Spanish phrase
No estoy convencido de ~.
Meaning
I am not convinced by ___.
When to use it
Indicates doubt about the merits of something. Commonly used to raise objections gently in meetings or emails and to ask for more evidence or alternatives.
Example dialogue
¿Qué opinas del plan de marketing?
What do you think of the marketing plan?
No estoy convencido de la estrategia tal como está.
I am not convinced by the strategy as it stands.