Subject Line Best Practices

• Instill Curiosity:
  Use teaser language that instills curiosity, but don’t be too vague.
• Provide Incentive, Promote Action:
  Tease offer (or mention directly if rich offer). If no offer, still use action words that inspire and instill a sense of urgency and incentive. 
• Short and Sweet:
  Focus on the composition of the first 2-3 words. Keep your character count under 50. Utilize preview text for more context.
• Personalization:
  Make the member feel special and unique. Utilize first name, but be sure the name flows well within the subject line. Also, use segmentation when possible.
• Avoid Spam:
  Keep consecutive capitalization and punctuation to a minimum. Many marketers use emojis; only use them when the context makes sense.