The stages a product goes through during its time on the market. There are 4 stages: introduction, growth, maturity, and decline. The stage your product is in helps inform your marketing objectives and promotional mix. For example, raising awareness of a new product may be more important than raising awareness of a mature product.

Combining Email Marketing with Other Types of Marketing
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.