You should include the name of the host, formal expression, the event purpose, date, time, and venue, contact details, and RSVP. Each person requesting an Invitation Letter must fill out a separate form.All letters will be sent in PDF format to the email address provided. You must be an active AIS member and your conference registration must be completed and paid in full before the letter will be prepared. Be an author of an accepted submission (oral presentation, poster presentation, panel member); Have paid the registration fee, in full, for this conference. Do you want to invite someone to speak at your meeting or conference? Whatever your event is, the following will help you write an effective invitation. We created three free templates you can use as a starting point. Need a visa invitation letter to travel to the United States for the 2025 BIO International Convention in Boston, MA? Conference registration is scheduled to open in early January.