Words that go togetherReply to
Answer a message, letter or person.
Please reply to my email when you can.
Not usual
reply me
✗ Please reply me soon (not usual).
Remember: Reply needs "to" before the person or message: reply to me, reply to the letter. Answer needs no "to": answer me.
Short lessonWords that go togetherSome words naturally team up with certain other words. These partners are called collocations.