Agile CRM is one of its kind, all-in-one customer relationship management software that comes with sales, marketing, and service automation. It's built considering the needs of small and medium-sized businesses and perfectly suitable for startups. It also offers amazing features like appointment scheduling, project management, 360-degree contact view, etc. and will help you manage your startup efficiently.
As you are looking for a free tool, Agile CRM is completely free for 10 users and you can manage up to 1000 companies and contacts in its free plan. To run robust email marketing campaigns, Agile CRM offers 5000 free emails in its free plan. You can always go ahead and purchase add-on email packs according to your requirements.
Read more about Agile CRM's world-class features: https://agilecrm.com/features