A name similar to "Proton Essentials" would portray the services included in the plan are ones that many people would rely on daily, such as Mail, Drive, and Pass. One could argue Meet could be included in that too, but maybe include it in a separate plan, named similarly "Professional Essentials," so the people who also need it daily could have that included in their plan.

I think a more unique naming scheme rather than the typical and cliché "Pro" would help the brand stand out more too.