Letter of Invitation
Whether you are required to have a Visa or not to travel to France, the letter of invitation provided by the conference organizers may be useful for agents at Ports of Entry to determine that a person is a legitimate visitor that intends to attend the conference.
Per the conference policy, only duly registered participants (authors and attendees) may get an invitation letter.
Should you need a letter of invitation to apply for your visa, this needs to be requested on the registration website when registering for the conference.
Please check again when the registration website opens next.