How to invite partners to a platform/marketplace?

Here is a list of approaches to invite partners to your platform:

• Utilize social media groups, forums, and communities
• Directly reach out vendors after finding their details via Online Business Listings, Merchant Associations, Trade fairs
• Use the Email marketing 
• Write blogs to attract vendors
• Provide a free digital service which available when they claim their page
• Optimize your listing for SEO so that traffic is routed to pre listed vendors
• Ensure that your partner sign up process is easy and there is appropriate support available in case they issue