Hi @Marvy, welcome to the Community! 

I’d actually recommending setting this up as a campaign, and just cloning it every month and then excluding a segment of users who have clicked on an email with that subject line over all time if the content is going to remain the same. Generally you want to keep this sort of monthly ‘newsletter’ as a Campaign, with adjustments to the content to keep it fresh for your list - if someone isn’t clicking month after month it’s probably a good idea to change it up rather than sending the same email hoping they’ll eventually engage.

Any reason you’re wanting to set it up as a flow? Potentially with a little bit more information about the use case I might be able to recommend a flow set-up that aligns with what you’re hoping to achieve.

@Marvy 

I can think of 2 ways 

If you want people to receive same email every month then you should do this

1. Create backend flow triggered by master segment (all people who are your subscribers at that moment) back-populate it (or click on add past profiles) and all this flow will do is add new property to people with date value of 1st of October 2024… then use this date property to trigger a flow and set it to repeat monthly. And add flow filter clicked email where flow is this flow zero times over all time

The second option is if you want to have different emails every month

2. Create a flow triggered by empty list. Add different emails for each month starting from October I guess. Once this flow is ready and set live, download all the people from your master segment and upload them into the empty list that is trigger for this flow probably best to do this on 1st of October to make sure your flow starts then because list triggered flows start when people are added to list. Then you can simply add 30 days time delay for the rest of the emails and they will be sent out each month. Also have the same flow filter as in the previous suggestion.. clicked email zero times over all where flow is this flow