There is no specific number of marketing campaign strategies that exist, as new strategies and tactics are continuously being developed and innovated. However, some common marketing campaign strategies include:
Email marketing
Social media marketing
Influencer marketing
Content marketing
Search engine optimization (SEO)
Pay-per-click (PPC) advertising
Affiliate marketing
Event marketing
Referral marketing
Direct mail marketing
The best marketing campaign strategy for a business will depend on its target audience, goals, budget, and resources, among other factors. It is often best to use a combination of several strategies in a holistic marketing approach to achieve the best results.