What is a good free email service for registering for webinars?

Question

Email

There is a need to conduct a series of free webinars. Tell me a good mail service, to which you can send and register up to 100 (and preferably 1000 people) for free without any conditions (like smartrespondera)

Answer 1

1. The initiator of registration must be a user, otherwise it is spam.
2. To register for webinars - use the form on the site.

to send an invitation to the webinar room to all subscribers at the right time.

3. This functionality is usually built into the webinar system. If not, write.
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