Even though it is perfectly acceptable and is a common practice to use the 8_stage classic model for the e_marketing plan as well, you might want to consider the simplified version proposed by Chaffey, who identifies four major steps to build the e_marketing plan:
Establishing current objectives: it is essential for the organization to try to determine with preciseness the objectives to be reached. These objectives, in order to be viable, must be SMART. SMART is an acronym and stands for "Specific", "Measurable", "Attainable", "Realistic" and "Timed". The objectives must also convey the general organizational mission.