BADREP / DUOLINGO EMAILS

How Duolingo writes email.

76 emails classified across 6 months, all sent through AWS SES. Tracked since Nov 2025. Every hook, framework, offer type and CTA — on the record.

Language Learning

Duolingo is one of 339 brands tracked in the BadRep vault, classified under Language Learning. We've indexed 76 emails from Duolingo since November 2025, sent at a cadence of roughly 12.7/month through AWS SES. Their program leans on Re-engagement sends with Problem hooks; below is everything BadRep has noticed about how they actually write to their list.

● WHAT WE NOTICED
  • Sends 2.5× more often than the median brand BadRep tracks (12.7 vs 5 emails/month).
  • Animated GIFs in 62% of emails — most brands BadRep tracks send zero (catalog median: 0%).
  • Re-engagement is the dominant program — 68% of all sends (52 of 76 emails).
  • Hook of choice: "Problem" — opens 36% of sends.
  • Subject lines average 30 characters, in the sweet spot for mobile preview (~30–50 chars).
  • Leans on emoji in subject lines — 53% include one, vs catalog median of 7%.
  • Latest send tracked: 4 days ago — Duolingo is currently active.
● LATEST EMAIL ON RECORD

Their freshest send — every angle dissected.

Duolingo email: We miss you! 💚Open in the Vault →
May 16, 2026Win-back

We miss you! 💚

Get back into learning Spanish.

HookProblem
FrameworkPAS
Funnel stageRetention
AwarenessProduct-aware
Words46
CTAs2
Primary CTAGet back on track
Psych triggers:
FOMOLoss AversionBelonging
Takeaway

Duolingo re-engages a lapsed user by reminding them of their Spanish learning goal and inviting them to complete a quick 5-minute lesson.

● THE PATTERNS

What Duolingo does on repeat.

12.7
emails/mo
6 active months
1%
personalized
merge tags + dynamic content
53%
with emoji 📨
avg subject: 30 chars
62%
with animated GIFs
motion in the inbox

Most-used email types

  1. 01Re-engagement68%
  2. 02Newsletter11%
  3. 03Win-back8%
  4. 04Transactional8%
  5. 05Welcome5%

Most-used hook types

  1. 01Problem36%
  2. 02Bold Claim18%
  3. 03Pattern Interrupt13%
  4. 04Direct Offer12%
  5. 05Question9%
● SEND CADENCE

The last 6 months of Duolingo.

Latest send tracked: 4 days ago. Peak month was Mar 26 with 32 emails.

2
Dec 25
0
Jan 26
10
Feb 26
32
Mar 26
18
Apr 26
2
May 26
● THE REST OF THE STASH

75 more emails inside. All searchable.

A peek at the back catalog. Subscribers see them in full — every screenshot, raw HTML, full classification.

May 2·Re-engagement
Duo’s not getting any younger… 🫠
Apr 25·Re-engagement
Duo’s not getting any younger… 🫠
Apr 21·Re-engagement
Your Spanish skills are getting moldy 🤢
Apr 20·Re-engagement
Hi ‎User Name‎! Got 5 minutes? Time for a tiny Spanish lesson.
Apr 19·Re-engagement
🥹 I’m not that upset! It’s allergies…
Apr 18·Re-engagement
I’m not above begging 🙏
Apr 18·Re-engagement
Are you still there? 💀
Apr 11·Re-engagement
👀 Hmm. Interesting.
Apr 11·Newsletter
This week’s progress: 😐
Apr 10·Re-engagement
‎User Name‎.
Apr 8·Re-engagement
Hi ‎User Name‎, take 5 minutes to practice Spanish today!
Apr 7·Re-engagement
‎User Name‎ + Spanish = ♥️
Unlock 63+ more Duolingo emails →
● COMMONLY ASKED

Duolingo email FAQ.

What email platform (ESP) does Duolingo use?
Duolingo sends through AWS SES, based on 76 emails analyzed by BadRep. ESP signals come from sending infrastructure (return path, DKIM, List-Unsubscribe headers) — not self-reported.
How often does Duolingo send marketing emails?
Duolingo sends roughly 12.7 marketing emails per month, averaged across 6 months of tracked activity. Peak send month was March 2026 with 32 emails.
What types of emails does Duolingo send?
Duolingo's most-used email programs are Re-engagement (68%), Newsletter (11%), Win-back (8%). The full classification covers 5 distinct email types across BadRep's taxonomy.
What hook types does Duolingo use to open emails?
Top three hook types in Duolingo's subject-line + opener combinations: Problem (36%), Bold Claim (18%), Pattern Interrupt (13%). BadRep classifies every email's opening hook to make stylistic patterns searchable.
How long are Duolingo's subject lines?
Average subject-line length for Duolingo is 30 characters across 76 emails. 53% include at least one emoji.
Does Duolingo personalize its marketing emails?
1% of Duolingo's emails show personalization signals — merge tags, dynamic content blocks, or first-person framing tied to subscriber attributes.
What category is Duolingo in?
BadRep classifies Duolingo under Language Learning. Niche tagging reflects the audience signal in the emails themselves, not the brand's own positioning copy.
Where do these Duolingo email examples come from?
Every email in this analysis was received, classified, and indexed by BadRep — a searchable email-intelligence vault. Subscribers can view full screenshots, raw HTML, and 20+ filter dimensions per email.
● ADJACENT TARGETS

Marketers studying Duolingo also dig into:

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148 emails →
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EWA Learn Languages
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