BADREP / DUOLINGO EMAILS

How Duolingo writes email.

97 emails classified across 8 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 549 brands tracked in the BadRep vault, classified under Language Learning. We've indexed 97 emails from Duolingo since November 2025, sent at a cadence of roughly 12.1/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 (12.1 vs 4.9 emails/month).
  • Animated GIFs in 62% of emails — most brands BadRep tracks send zero (catalog median: 0%).
  • Re-engagement is the dominant program — 69% of all sends (67 of 97 emails).
  • Hook of choice: "Problem" — opens 32% of sends.
  • Subject lines average 31 characters, in the sweet spot for mobile preview (~30–50 chars).
  • Leans on emoji in subject lines — 54% include one, vs catalog median of 11%.
  • Latest send tracked: yesterday — Duolingo is currently active.
● LATEST EMAIL ON RECORD

Their freshest send — every angle dissected.

Duolingo email: Duo’s not getting any younger… 🫠Open in the Vault →
July 4, 2026Re-engagement

Duo’s not getting any younger… 🫠

It’s been ‎15‎ days since your last lesson…

HookPattern Interrupt
FrameworkBAB
Funnel stageRetention
AwarenessProduct-aware
Words169
CTAs1
Primary CTACONTINUE LEARNING
Psych triggers:
Loss AversionFOMOPersonalization
Takeaway

Duolingo uses anthropomorphic guilt and social comparison to re-engage a lapsed user, leveraging the mascot's 'aging' and peer progress to drive immediate return.

● THE PATTERNS

What Duolingo does on repeat.

12.1
emails/mo
8 active months
2%
personalized
merge tags + dynamic content
54%
with emoji 📨
avg subject: 31 chars
62%
with animated GIFs
motion in the inbox

Most-used email types

  1. 01Re-engagement69%
  2. 02Win-back9%
  3. 03Newsletter9%
  4. 04Transactional6%
  5. 05Welcome4%

Most-used hook types

  1. 01Problem32%
  2. 02Bold Claim24%
  3. 03Pattern Interrupt15%
  4. 04Direct Offer9%
  5. 05Question8%
● SEND CADENCE

The last 6 months of Duolingo.

Latest send tracked: yesterday. Peak month was Mar 26 with 32 emails.

10
Feb 26
32
Mar 26
18
Apr 26
7
May 26
15
Jun 26
1
Jul 26
● THE REST OF THE STASH

96 more emails inside. All searchable.

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

Jun 29·Re-engagement
Your last reminder from me
Jun 28·Win-back
‎You have a message. ‎
Jun 27·Re-engagement
🥹 I’m not that upset! It’s allergies…
Jun 27·Re-engagement
Duo’s not getting any younger… 🫠
Jun 21·Re-engagement
Your Spanish skills are getting moldy 🤢
Jun 20·Re-engagement
I’m not above begging 🙏
Jun 20·Re-engagement
😅 You show up for Spanish. Sometimes.
Jun 19·Re-engagement
I’ll try anything
Jun 16·Re-engagement
🆘 Last chance to save your streak!
Jun 14·Social Proof
🤔 Guess who? It’s ‎Kseniia‎!
Jun 13·Onboarding
💪 Spanish stats looking strong
Jun 6·Newsletter
You’re crushing Spanish ✨
Unlock 84+ more Duolingo emails →
● COMMONLY ASKED

Duolingo email FAQ.

What email platform (ESP) does Duolingo use?
Duolingo sends through AWS SES, based on 97 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 12.1 marketing emails per month, averaged across 8 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 (69%), Win-back (9%), Newsletter (9%). 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 (32%), Bold Claim (24%), Pattern Interrupt (15%). 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 31 characters across 97 emails. 54% include at least one emoji.
Does Duolingo personalize its marketing emails?
2% 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

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