Samcart
Aims to be a simple, turnkey solution for marketers to sell their products online and create a professional looking shopping cart.
@samcartapp
Salesforce
Salesforce needs no introduction - but they also have a very full-featured email marketing platform, that integrates with Salesforce CRM data.
is not disclosed on their website.
Success stories:

Website: salesforce.com

ClickFunnels
Success stories:
Website: clickfunnels.com
Bold Upsell
Success stories:

Website: boldcommerce.comupsell
Mailshake
Mailshake is an outreach tool that allows you to send cold emails, send follow-ups, and track results.
They also have a cool AB testing feature.
- Basic $39/month
- Pro $59/month
- Omni $99/month
Success stories:
Website: mailshake.com

Back in Stock
Success stories:
Website: apps.shopify.com
Zoho CRM
Success stories:
Website: zoho.com
Bold Cashier
Success stories:

Website: boldcommerce.comcashier
SumoMe
Success stories:
Website: sumo.com

Upsell App
Success stories:
Website: apps.shopify.com
Infusionsoft
Success stories:

Website: infusionsoft.com
Proposify
Success stories:
Website: proposify.com
Shoelace
Success stories:
Website: shoelace.com

Ultimate Special Offers
Success stories:
Website: apps.shopify.com
Badger Maps
Success stories:
Website: badgermapping.com

RightMessage
Success stories:
Website: rightmessage.com
Hubb
Success stories:

Website: hubb.me
sendowl
Success stories:

Website: sendowl.com
Sales & Orders
Success stories:
Website: salesandorders.com

SentryKit
Success stories:
Website: sentrykit.com
Aplazame
Success stories:
Website: aplazame.com
Cleverific
Success stories:
Website: cleverific.com
Zotabox
Success stories:
Website: zotabox.com
CallPage
Success stories:
Website: callpage.io
Salesrabbit
Success stories:
Website: salesrabbit.com
Putler
Success stories:
Website: putler.com
Hermes BorderGuru
Success stories:
Website: hermesborderguru.com
Kartra
Success stories:
Website: home.kartra.com
nocrm.io
Success stories:

Website: youdontneedacrm.com

Scout
Success stories:
Website: apps.shopify.com