To enter Ukraine, citizens from some countries can get an e-visa.
However, to obtain it, in addition to the insurance policy and other documents, you must have a document that serves as the basis for entry, usually an invitation letter.
Without it, you will not receive a visa.
For different purposes, you can issue different documents:
Business e-visa
When applying for an electronic visa for traveling for business purposes, one of the following documents is submitted:
- invitation of a legal entity registered in Ukraine, executed in accordance with the established special rules;
- invitation of the state body, state institution, state enterprise, state organization;
- a document confirming the implementation of foreign investment in accordance with the legislation on the mode of foreign investment in Ukraine.
More information:
https://immigration-ukraine.com/invitation-for-e-visa-to-ukraine/