Send email at specific time intervals
I've attached a reminder page that I use for a 6 month comparison that sends 2 reminder emails when the 6 months is approaching. I trigger a daily test with a cron job to see if 5 or 6 months has elapsed since the last time a member has logged in and hen take the appropriate action.
There are a number of recipes in the CMSB Cookbook on how to compare time and execute an action (send an email) if certain criteria are met.
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Hope it helps,
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