Issue with another plugin

Hello

I have an issue with a plugin call “subscribe to comments reload” and after few search it may involve your plugin:

https://wordpress.org/support/topic/hundreds-of-emails-sent-to-subscribers?replies=9

Users received 600+ emails notifications

I have installed on my wordpress both plugins.

Could you help me to solve this situation ?

Thank you

https://wordpress.org/plugins/postman-smtp/