I can't stay/be in the office everyday.
其实还有其他更好的表达:
It's impossible for me to stay in the office every day .
I can't be in the office all the time(我不可能一直都待在办公室)
I can't be in the office all day long(我不可能整天都待在办公室)
言下之意即 我不可能整天在办公室等着你的邮件.