The visa can be applied for up to four days prior to entry and is valid for 30 days from the date of creation; In Saint Petersburg and the Leningrad region you can spend a total of eight days. Unlike the regular visa, applicants do not have to pay visa fees. However, such a visa does not allow entry to the train for technical reasons for a while yet.
A similar regulation applies for some time for the Kaliningrad region as well as for the Russian Far East. By 2021, Europeans should be able to enter Europe by e-Visa.