From my experience, the maximum number of addressees on a Gmail is 500, but it’s not just about the number.
If you’re sending to a ton of people at once, Gmail might temporarily block you. Happened to me twice.
Workaround? Use something like Mailjet or just send in chunks.
If you’re sending to a ton of people at once, Gmail might temporarily block you. Happened to me twice.
Workaround? Use something like Mailjet or just send in chunks.