Advert for different uses

Graphic Design
#1

Client wants me to create an advert that she will use through email, whatsapp, and then adjust and use for print

  1. For email and whatsapp: Do I save it at 72ppi?
  2. Can I create a standard print size such as A4, or is there a specific size for WhatsApp?

Thank you so much

#2

For whatsapp the size should be 1080x1920 px (not inches!)
I’d recommend doing a regular print size as well, rather than telling her to adjust it. Whatsapp size is more narrow than a regular paper

#3

Thank you so much, and is it 72ppi? RGB?

#4

I would do 150 but yes, rgb

#5

Thank you so much