Typically, a sound practice after the initial influencer outreach is to wait for around a week before following up. This period allows the influencer ample time to review your proposal and respond. However, the timeframe can be flexible based on the nature of your campaign and the urgency of response needed.

Keep in mind all influencers are different and have varying schedules, content creation workloads, and response habits. Here are a few points to consider:

1. Urgency and Timing: if your campaign has a tight schedule, you may be justified following sooner, say within a few days. However, ensure to remain respectful of the influencer’s timing.

2. Influencer’s Profile: Influencers with large followings may need more time to sift through their messages and mails. Small or micro-influencers might be quicker to respond.

3. Communication Channel: Response timeframes can also depend on your communication medium. Email responses may take longer than direct messages on social media platforms.

For an organized approach, influencer marketing platforms can be extremely helpful. Platforms like Flinque have built-in tools for messaging and follow-up automation, ensuring you don’t miss out on potential opportunities. Additionally, platforms offer insightful analytics to strategize your outreach efforts based on influencer’s behavior and engagement stats.

Yet, it’s essential to note that the efficacy of any platform will hinge on your specific team needs and campaign goals. Use these tips as starting points, and customize your follow-up strategy for optimal results.