Logo Formats

When sending a logo to a client, what formats should I send them in?
I have worked with other designers through work and I noticed that when you request a logo, they send it in multiple formats. I would like to do the same for my clients.
Thanks!

I send the logo as pdf’s, jpegs and as png’s.

The way I do it is send the full logo, in colored, black and white, and on a color background… and also just the icon colored, b&w, and on a background, and just the text etc. Basically I give them all different files so that they should have what to use for whatever they need, and not have to come back to me every time. Hope that helps!

sometimes they will ask for .eps as well