Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Codat - Codat works with lenders, banks, insurers and software providers to provide integrations with the accounting and other financial softwares.

mlist - Email newsletters, outside of the inbox

Pulse by Bench Accounting - See the financial health of your business in real-time.

TL;DR Email - Send short emails & read emails as fast as you read Facebook

Wealthbox - Smart CRM for financial advisors