Integration of Flodesk Mailing Service

We used Flodesk for email marketing.  I would like people to be able to sign up for our mailing list when they checkout in our online store.  I would also like our blog posts to automatically be sent to our mailing list.  The only options seem to be Squarespace's in-house option and MailChimp.  Any help would be appreciated.  Thank you!

I have already integrated a Flodesk email list sign up for my pop-up and an inline email list sign up form.  

I'm commenting to so I can follow this. We are in the same situation and request that Flodesk be incorporated into SquareSpace! 

Any answers to this? We are using another mail service but considering Flodesk. 

We are in the same situation, too.  We use ActOn and our partners use Salsa.  Please extend this feature, Squarespace!