Hi @Csepi
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Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client, and not much is known about scripts and third-party tools, and the following suggestions are for reference only. Thank you for your understanding!
To automatically send an "accepted" response with a specific summary activity, it is recommended that you create a rule with a specific response template. Here are the steps:
1.Create a Template: Before setting the rule, create a template for your response. Go to Home > New Email. Write your “accepted” response and save it as a template by clicking File > Save As and choosing Outlook Template.
2.Create a Rule: Go to Home > Rules > Manage Rules & Alerts. >Click on New Rule. >Select Apply rule on messages I receive and click Next. >Set conditions to match the event details, such as specific words in the subject or body.>Click Next and choose Reply using a specific template.
By the way, for Outlook development-related issues, you can get more professional advice in this tab: Office Development.
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