Growth · alternatives · 2026
24 alternatives to Zefyr
Insights about the people / companies you're emailing
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Zefyr launched in 2016; newer entries below may have overtaken it.
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Free crowdsourced database of business emails
2017 · leadsfinder.io · its alternatives →
- 2
Reviewik▲209Customer emails into insights: topics, keywords, sentiment
2024 · darulamanperdana.my · its alternatives →
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Stratechery▲83Daily email analysis on tech biz and strategy
2015 · stratechery.com · its alternatives →
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Dr Mogul▲76Personalized emails checking in on your startup progress
2016 · drmogul.com · its alternatives →
- 13
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Know more about the people who email you
2016 · cloudmagic.com · its alternatives →
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Improve how your company communicates, every week.
2015 · acuity.sa.com · its alternatives →
- 18
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MailMentor▲162A data driven approach to writing better email
2015 · mailmentor.io · its alternatives →
- 20
immersion▲88Cool tool to get a people-centric view of your email life
2014 · centerforcollectivelearning.org · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →