Digital Marketing Agency

Hello,

I've been ramping up business with a digital marketing agency. I'd like a CRM that allows for separate sections and forms to fill in custom fields on the separate section.

For example, if Johnny wants SEO services, I'd like to be able to send him a form asking questions like demographics, keywords etc and in his profile on the CRM, it has an SEO section with fields for those questions.

I'm ok to use gravity forms and zapier or an api to populate the fields.

Any recommendations? Smaller budget preferred as I'm still growing.