Is it possible to get Platinum from daily login rewards?

[TofuDieb [profile in progress]]

And are there any other ways to get platinum besides paying ?

[brassejector]

what i usually do is do relics and get prime part blueprints and sell them for platinum. I sometimes get rare ones worth 40 plat.

[Tigerlight]

Originally posted by LordJulius:

And are there any other ways to get platinum besides paying ?

Platinum itself does not drop in Daily Rewards, only discounts (unless the new login reward system changed that which I do not believe it did).

Relics give you Prime parts which you can trade with other players for Platinum.
Rivens from Sorties or some Alerts can be traded.
Almost any mod in the game can be traded and several are in high demand.

But...trading. A subject on which there are literally HUNDREDS of guides and posts.