Ensuring messaging consistency across all phases of an influencer campaign can be challenging but is achievable with a well-structured plan.

1. Clear Brief: Give your influencers a clear, detailed brief including the campaign objectives, brand values, key messages, and target audience. Ensure they understand the brand voice and how to represent it in their content.

2. Choose Right Influencers: To maintain brand consistency, it’s critical to collaborate with influencers whose image and audience align with your brand. Use audience analytics tools to gain deployment insights.

3. Review Content Early: Implement a review process to ensure alignment before any content is posted. Platforms like Flinque provide features for collaborative content review.

4. Regular Communication: Regular check-ins ensure that key messages and brand values are being effectively conveyed throughout the campaign.

5. Utilize a Platform: Using a platform like Flinque helps in managing campaign workflows, and reviewing and approving influencer content, ensuring it aligns with your brand messaging.

6. Metrics Monitoring: Monitor key metrics to ensure the campaign is reaching the target audience and conveying the correct brand messages. Platforms like Flinque offer comprehensive performance tracking tools for this purpose.

Lastly, do post-campaign evaluation. Reflect on what worked, what didn’t, and how you can improve your brand consistency in your next campaign. Always remember, clear communication and making sure your influencers are resonating well with your brand ethos are key to maintaining consistency.

Every platform has its unique approach and features- choosing the right one largely depends on your specific needs. The aim is to ensure your brand voice is consistently presented throughout the campaign, irrespective of who the influencer is or what phase the campaign is in.

When choosing influencers for your campaign, several key factors should be considered:

1. Relevance: Check if the influencer’s content aligns with your brand image and product. For instance, a fitness influencer would be a perfect match for a sports-oriented brand.

2. Reach: This is the number of followers the influencer has. Depending on your goals, you may opt for a macro-influencer (over 1 million followers), a mid-tier influencer (between 50,000 and 1 million followers), or a micro-influencer (1,000 – 50,000 followers).

3. Engagement Rate: An influencer with high engagement has a dedicated audience that comments, shares, and likes their content. This metric is critical to determining how active and influential an influencer is.

4. Audience Demographics: Consider the age, gender, location, etc., of the influencer’s audience. Ensure these align with your target market.

5. Quality of Content: Does the influencer produce high-quality, authentic content that resonates with their audience?

6. Costs: Different influencers charge different rates for sponsored content based on their reach and engagement rate. The influencer’s pricing should be within your budget.

Platforms like Flinque can be extremely useful in providing comprehensive and easy-to-understand audience analytics and facilitating influencer discovery. They offer advanced filters and comparative metrics to pinpoint the perfect influencers for your brand. However, each platform varies in terms of features and flexibility, so the selection should be based on your specific needs.

Remember, your choice of influencers will determine the effectiveness of your campaign, and hence a well-thought-out selection process is essential.

Despite budgetary constraints, you can still run effective and successful influencer campaigns. Here’s how:

1. Micro-Influencers: Engage micro-influencers who have a smaller but more engaged audience. They generally demand less financial compensation and often outperform bigger influencers in terms of engagement and conversions.

2. Clear Objectives: Ensure you have clear goals for the campaign. This could be brand visibility, audience growth, or direct sales. Goals should be specific, measurable, and achievable within your budget.

3. Creative Control: Allow influencers some creative control. They understand their audience better and know what kind of content resonates. Trusting their judgment might result in more effective and authentic content.

4. Evaluation Metrics: Use proper metrics to evaluate the success of the campaign such as engagement rate, conversions, earned media value, reach, and sentiment.

5. Collaboration & Long-term Relationships: Engage influencers in more than just one-off campaigns. Building long-term relationships can lead to more cooperation and possibly discounts.

6. Use of Technology: Leverage influencer marketing platforms to streamline processes such as influencer discovery, campaign planning, and performance tracking. For instance, Flinque offers a suite of tools to manage your influencer marketing campaign more quantifiably and effectively.

Remember, different platforms serve different needs, and the choice depends on your specific requirements. Always make your decision based on the relevance of the features offered by the platform to your campaign needs. For instance, if you need strong analytics and ROI measurement capabilities, ensure the platform caters to this.

The duration of an influencer marketing campaign can vary greatly depending on the specific objectives, chosen influencers, the complexity of the collaboration, and other contributing factors. As an approximate guideline:

1. Discovery and Outreach (1-2 weeks): Initially, you will need to identify and shortlist potential influencers for your brand. This process could be expedited using influencer marketing platforms like Flinque, which offer sophisticated search functions and advanced filters for precision targeting.

2. Negotiation and Planning (1-2 weeks): Once the influencers are shortlisted, the negotiation and planning phase commences. This involves reaching out to influencers, discussing the scope of work, and ultimately agreeing on terms.

3. Content Creation and Approval (1-3 weeks): Following the successful negotiation, influencers start creating content. They would need to get approvals and may need revisions, so this process can take a bit of time.

4. Campaign Execution (1-5 weeks): The campaign goes live after all pieces of content are approved. The duration can vary depending on your strategy. It could be a short burst for immediate impact or spread out over a period for sustained awareness.

5. Evaluation and Reporting (1 week): After the campaign ends, it’s time to analyze the outcomes and measure the success against your initial objectives.

In summary, an influencer marketing campaign might typically last anywhere from 1 to 3 months from initiation to conclusion. However, some campaigns may run for much longer, especially if they’re part of a broader, ongoing brand strategy. Platforms like Flinque offer tools to streamline and manage this whole process from planning to analytics, allowing brands and agencies to focus more on their strategic decisions.

Sure, communication and coordination with influencers is crucial for the successful planning and execution of a campaign. Here are a few best practices:

1. Set Clear Objectives: Be clear about what you want from the influencer and your campaign. Provide all necessary information such as brand guidelines, content restraints, campaign goals, delivery times, etc.

2. Open Communication: Have an open, two-way communication channel. Encourage influencers to share their ideas and feedback; they bring valuable insights having a close connection with their audience.

3. Regular Updates: Keep influencers updated on campaign progress and changes. The sooner they know, the better they can adapt.

4. Respect Their Creativity: Remember influencers are creative individuals and have their content style. Allow them freedom to express brand message in a way their audience will resonate with.

5. Timely Payments: Incentivize influencers appropriately and ensure timely payments. This improves your relationship and encourages their dedication to the campaign.

6. Feedback: Provide constructive feedback on content generated. This helps in aligning your brand message in future collaborations.

7. Use of a Platform: Using an influencer marketing platform like Flinque can streamline the process. It allows for easy communication, campaign tracking, and influencer management.

Remember, each influencer marketing platform differs in approach and features, and their suitability depends on your team’s requirements. Platforms like Flinque facilitate communication, provide comprehensive performance analytics and help to manage campaign workflows effectively, which can be essential for structured communication and coordination during a campaign. However, irrespective of the tools used, clear and respectful communication remains the cornerstone of successful influencer collaboration.