Sorry but VBOUT is my autoresponder. You might want to look into adding them. Their market share is surpassing MailerLite and others.

From the perspective of Teachify's development stance, we look forward to continually increasing our support for more 3rd-party integrations. This is not only our commitment but also the goal we are constantly striving for. However, considering our limited resources, we must carefully allocate and prioritize our product development plans. We anticipate significant progress in the second half of the year, hoping that we can gain more resources and systematically enhance this aspect of our capabilities. Thank you for your suggestions and information. Personally, I will definitely include VBOUT as part of our future plans.