Ask HN: B2C CRM with email marketing integration?

@patio11 emphasizes doing frequent and appropriate mailings. It's good advice! It works well for us.

But what is a good B2C CRM able to be well-integrated wil email marketing?

We do detailed segmentation of our mailing list and I can't find a good B2C CRM that integrates sufficiently with an email mktg platform.

I'm currently looking into synching many more fields (needed for segmenting) from Zoho CRM to MailChimp via API with CloudWork/ItDuzzit/Zapier. Their defaults are useless (3-5 main fields), as we need complete contact info in order to segment well.