A business email does not mean it’s paid.
Lark has many problems, the biggest problem is that it doesn’t go to certain mailboxes, like the one you are encountering now. I use Oracle SMTP for 100,000 emails per month at a cost of 80 RMB. Most of the time, I only use 10,000 emails per month, which is 8 RMB. If you are unwilling to spend money, then you should use free services that have problems.
Sent via Discourse Meta notifications@meta.discoursemail.com on Sunday, November 16, 2025 at 16:41: