How Duolingo writes email.
108 emails classified across 9 months, all sent through AWS SES. Tracked since Nov 2025. Every hook, framework, offer type and CTA — on the record.
Duolingo is one of 973 brands tracked in the BadRep vault, classified under Language Learning. We've indexed 108 emails from Duolingo since November 2025, sent at a cadence of roughly 12/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.
- Sends 2.2× more often than the median brand BadRep tracks (12 vs 5.5 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 (75 of 108 emails).
- Hook of choice: "Problem" — opens 30% of sends.
- Subject lines average 31 characters, in the sweet spot for mobile preview (~30–50 chars).
- Leans on emoji in subject lines — 52% include one, vs catalog median of 8%.
- Latest send tracked: 2 days ago — Duolingo is currently active.
How Duolingo stacks up in Language Learning.
Against the Language Learning field, Duolingo runs a more broadcast style than peers (2% personalized vs 25%), and writes far shorter emails than the norm (60 words vs 252).
| Metric | Duolingo | Language Learning median | Read |
|---|---|---|---|
| Emoji in subject | 52% | 39% | 1.3× niche |
| Personalization | 2% | 25% | 8% of niche |
| Median subject length | 30 chars | 35 chars | 14% shorter |
| Median body length | 60 words | 252 words | 76% shorter |
Benchmarks computed from 850 emails across 48 Language Learning brands in the BadRep vault.
What Duolingo does on repeat.
Most-used email types
- 01Re-engagement69%
- 02Win-back9%
- 03Newsletter9%
- 04Transactional6%
- 05Welcome4%
Most-used hook types
- 01Problem30%
- 02Bold Claim23%
- 03Pattern Interrupt18%
- 04Direct Offer9%
- 05Question7%
The last 6 months of Duolingo.
Latest send tracked: 2 days ago. Peak month was Mar 26 with 32 emails.
107 more emails inside. All searchable.
A peek at the back catalog. Subscribers see them in full — every screenshot, raw HTML, full classification.
Duolingo email FAQ.
What email platform (ESP) does Duolingo use?
How often does Duolingo send marketing emails?
What types of emails does Duolingo send?
What hook types does Duolingo use to open emails?
How long are Duolingo's subject lines?
Does Duolingo personalize its marketing emails?
What category is Duolingo in?
Where do these Duolingo email examples come from?
Stop screenshotting Duolingo emails.
Just search them.
Every email, every brand, every classification. $19/mo. Cancel anytime.
Browse the vault — free