Yes. The list of email addresses in your possession is seen as a register. To send survey invites to this list you have to ask for consent for this kind of action. You are obliged by the GDPR rules to also tell what you plan to do with the survey responses.
After 25th of May 2018, a register without any consent information concerning the use of that register is useless.
A consent for different types of actions need to be asked separately with e.g. multiple checkboxes. One checkbox that asks for different actions like newsletter, survey invites etc. is not allowed.