Where can I see the number of subscribers and their sources?

In the Analytics section, scroll down to the Subscribers section. By selecting a date, you can observe the growth trends of your subscribers during the chosen period.

Within the Contacts tab, you'll find the overall count of your subscribers. Additionally, you can utilize filters and segments to analyze subscribers based on various criteria, including the source they subscribed from.

To view subscribers based on their subscription source, you can create a segment using the "Source" condition. This enables you to filter and examine subscribers who joined from specific sources, such as a custom subscription form, a particular web form, or other sources.

For example, you can build the segment to see people, who subscribed less than 180 days ago but more than 90 days ago and they came directly to you website.