How to Choose the Best Email Marketing Agency for Your Brand in 2025
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How to Choose the Best Email Marketing Agency for Your Brand in 2025
Finding the best email marketing agency in 2025 isn’t just about great design or copy—it’s about choosing a strategic partner who can grow with your brand.
As DTC ecommerce becomes more competitive, email is no longer a nice-to-have—it’s a critical revenue channel. The right agency will help you increase conversions, automate lifecycle journeys, and unlock customer LTV. But not all email agencies are created equal.
This guide will help you evaluate potential partners and choose the right fit for your goals.
1. Look for Ecommerce-Specific Experience
If you’re on Shopify or selling DTC, you need an agency that understands ecommerce behaviors, product cycles, and conversion metrics. A B2B-focused email firm or a generalist creative agency won’t bring the same insights to the table.
Ask:
- Have they worked with brands in your vertical?
- Do they understand ecommerce metrics like AOV, repurchase rate, and CAC payback?
- Do they have platform expertise in tools like Klaviyo?
Learn more: Sticky Digital Email Strategy
2. Evaluate Strategy + Execution Capabilities
Some email agencies only offer creative or campaign management. Others build flows but leave strategy behind. The best partners do both.
A strong agency will:
- Audit and optimize your entire lifecycle
- Build high-performing flows (welcome, post-purchase, winback, etc.)
- Design and copywrite campaigns that align with your goals
- Test subject lines, CTAs, send times, and segmentation
3. Ask About Testing and Reporting
If your agency isn’t testing, they’re guessing. The best firms will have a plan for A/B testing subject lines, creative layouts, and segmentation strategies—and they’ll report clearly on results.
Ask to see:
- Testing calendars
- Reporting dashboards
- How they measure performance beyond open rate (hint: focus on clicks, conversions, and revenue per send)
4. Consider Platform Fluency (Especially Klaviyo)
In 2025, Klaviyo remains the most powerful email tool for Shopify merchants. Your agency should be fluent in:
- Flow automation logic
- Dynamic product blocks
- Integrations with loyalty, SMS, and subscriptions
- Deliverability best practices
If they also understand Yotpo, Attentive, and Recharge? Even better.
5. Prioritize Fit and Communication
The best email agency isn’t just a vendor—they’re an extension of your team.
- Will you have a dedicated strategist and designer?
- Do they offer weekly or biweekly syncs?
- Is their communication proactive and transparent?
- Are they thinking ahead or just taking orders?
Behind the scenes: Why Brands Switch to Agencies
6. Bonus: Make Sure They Think Beyond Email
Retention doesn’t stop at the inbox. A top-tier email agency will help you integrate with SMS, loyalty, and on-site personalization for a full-funnel experience.
Learn more about the role of email in the broader mix: Email vs. SMS
Work With a Team That Lives and Breathes Email
At Sticky Digital, we’re not generalists. We’re a dedicated email and retention marketing agency built for DTC brands. We handle everything from flow optimization and A/B testing to copy, design, and performance strategy—so your emails not only look good, but drive revenue.