Choose the Right ESP: Building Your Requirements Brief

Selecting the right Email Service Provider (ESP) is the foundation of a successful 90-day email funnel. As a business owner, marketer, or creator aiming to drive revenue and engagement, your ESP should fit your unique goals and workflow—not the other way around. Here’s a step-by-step guide to help you create a prioritized requirements brief.

1. Rank Your Needs by Importance

Let’s break down the five key categories every robust ESP should be judged by, and why each matters:

1. Automation Depth

Ask: How advanced are the automation workflows? Can you set up if/then branching, trigger actions based on user behavior, or perform personalized sends?
Why It Matters: Deep automation lets you send the right message at the right moment, keeping prospects on the perfect path to purchase. Think beyond welcome series—imagine trigger-based upsells or re-engagement drips for at-risk subscribers.

2. Segmentation Features

Ask: Does the ESP give you powerful list segmentation and tag-based organization? How granular can you get?
Why It Matters: Segmentation is what turns bulk email into relationship-building, revenue-driving marketing. The more specific you can be (by interest, purchase behavior, engagement), the better your results.

3. Analytics & Reporting

Ask: What metrics are tracked (open rate, click rate, conversions, revenue)? Can you visualize automations’ performance?
Why It Matters: Without actionable data, you can’t optimize. Look for platforms that make it easy to track each email’s ROI and troubleshoot drop-offs along the funnel.

4. Deliverability Tools

Ask: Is the ESP known for high deliverability rates? Does it provide tools for list hygiene, spam testing, and compliance?
Why It Matters: Even the best email can’t convert if it lands in spam. Great deliverability is non-negotiable.

5. Integrations

Ask: How easily does the ESP connect with your CRM, e-commerce, opt-in tools, or analytics platforms?
Why It Matters: Your funnel works best when your tools talk to each other, ensuring subscriber data is synced and triggers fire smoothly.

Sample Requirements Table

Feature	Must-Have	Nice-to-Have
Automation Depth	X
Segmentation	X
Analytics	X
Deliverability Tools	X
Integrations		X

Tip: Use this table as a living document. Have your team score or discuss each feature based on your business’s specific goals and resources.

Next Steps

Shortlist 2–3 ESPs that best align with your priorities.
Test drive them with real scenarios. Don’t just rely on specs; try mapping out a key workflow in each platform.
Pay attention to support resources and community—these can be lifesavers as you scale.

When chosen thoughtfully, your ESP becomes the backbone of your entire 90-day funnel, powering automation, insights, and revenue for every email you send.

Up Next: Once you’ve chosen your ESP, we’ll begin designing your email sequences and automation structure for maximum engagement and conversion.

Clarify the Offer and Outcomes