Automation emails based on creation date + X days

Automation emails based on creation date + X days

Hello,
In Zoho CRM, it's possible to set up email alert based on the creation date of the lead with the option to add + X days. It is very useful to re-contact a lead who is not yet an opportunity. Unfortunately, because of the quota limits (50 by user), I choose Zoho campaign to send emails.
Unfortunately, in Zoho campaign, you can only choose a date on not a period (like mm/dd/yyyy +X days after creation time) to set up a worflow process.

Do you have any idea how can I solve this issue?

Many thanks,

Antoine