Most email sequences focus on what the sender wants to say about their product. The ones that convert best focus on what customers say. Embedding testimonials into your email marketing — strategically, not randomly — can meaningfully improve click-through rates and conversions at key sequence moments.
This guide covers where and how to use testimonials in welcome sequences, nurture emails, re-engagement campaigns, and pre-sale emails, with template structures for each.
Email recipients are skeptical by default. They've seen marketing copy before. A testimonial breaks the pattern — it's a different voice, a peer voice, and it carries credibility that your own claims cannot.
The goal is not to stuff every email with five testimonials. It's to introduce one well-chosen testimonial at the moment in a sequence when doubt is highest.
The best placement is email two or three — after the initial welcome, but before you make a strong sales ask. By then the subscriber has seen your brand once, and a testimonial from a customer like them reinforces that the product delivers on what the welcome email promised.
Avoid putting a testimonial in email one. That first email should focus on setting expectations and delivering on whatever was promised in exchange for the signup.
Welcome Sequence Template — Email 2:
Subject: Here's what [Customer Name] said after their first week
Body:
"[Specific, outcome-focused quote from a real customer.]" — [Name, Title, Company]
We've helped [customer segment] achieve [result]. This week, here's what we recommend you do first: [single clear next step].
[CTA Button: Get Started]
Nurture sequences are long-game emails that educate and build trust over weeks or months. Testimonials in nurture emails should be matched to the topic of that specific email.
If you're sending a nurture email about a specific feature, include a testimonial from a customer who used that feature. If you're sending a nurture email about a use case, include a testimonial from a customer in that use case. Relevance beats seniority — a relevant mid-market testimonial outperforms a Fortune 500 logo with no connection to the email's content.
Nurture Email Testimonial Block Template:
Don't just take our word for it:
"[Testimonial specific to this email's topic.]" — [Name, Role, Company or Industry]
Re-engagement emails target subscribers or customers who have gone quiet. The goal is to remind them of value they may have forgotten. A testimonial from a customer who started slowly and then found their footing can speak directly to that situation.
Avoid generic "we miss you" copy. A specific testimonial about outcome, ease, or a surprising benefit is more likely to restart engagement than a discount alone.
Re-Engagement Email Template:
Subject: "[Customer] said this changed how their team works — we think you'll relate"
Body: One of our customers, [Name], almost gave up after the first week. Then they tried [specific feature or workflow]:
"[Short testimonial about a turnaround moment.]"
If you haven't explored [feature], it takes about 10 minutes to set up. Here's where to start: [link]
The email immediately before a purchase request — the one that says "here's why this is worth your money" — is where testimonials carry the most weight. This is the moment of peak hesitation.
Use two testimonials in this email: one that addresses the primary objection (price, learning curve, switching cost) and one that highlights the primary outcome your buyer wants. Do not pad it with a third — keep the focus sharp.
Pre-Sale Email Template:
Subject: What [Name] said after switching from [Competitor/alternative]
Body: We know this decision isn't trivial. Here's what a few customers said when they were in the same spot:
"[Testimonial addressing price or switching hesitation.]" — [Name, Role, Company]
"[Testimonial about the primary outcome/result.]" — [Name, Role, Company]
[Your offer and CTA below]
Text testimonials within the email body are more reliable across email clients and render consistently in plain-text fallback mode. Image-based testimonial graphics look polished but can fail to load if a recipient has images disabled.
Use text-based testimonials with clear formatting (a blockquote style, different background, or italic attribution line) rather than images whenever possible.
One or two per email is the right ceiling. More than two and the email starts to feel like a pitch deck rather than a conversation. The power of a testimonial comes partly from its scarcity — it's a moment that stands out from the surrounding copy.
Yes, with permission from the person who wrote the testimonial. Reach out to ask if you can quote them in email communications. Most people who've written positive things publicly are happy to be asked.
Ask specific questions in your collection form. Instead of "What do you think of our product?", ask "What specific result did you see in the first 30 days?" and "What would you tell someone who is on the fence?" Specific questions produce specific testimonials.
When you can segment by industry, yes — this dramatically improves relevance. If you're sending to a mixed list, choose testimonials with widely relatable outcomes or problems.
Yes. Most email platforms support A/B testing on subject lines and body content. Test different testimonials in the same email position to find which resonates best with your list.
Use a left border (blockquote style), an indented box with a light background, or italic text with an attribution line below. The goal is to make it visually distinct from your prose so the reader knows it's a customer voice, not your own.
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