Mailbutler is the best CRM tool for solopreneurs currently on the market. It comes with an impressive set of features that can help freelancers and solopreneurs better manage their customer relationships and interactions. Some of the most important ones are:
1) Contacts — Helps you manage your email contacts
2) Notes and tasks — Acts like your second memory
3) Send later — Lets you schedule emails to be sent later
4) Email tracking — Notifies you when, where, and how many times your emails have been opened