Duo Security vs MailerSend

Duo Security and MailerSend (Email service that delivers) both appear on the Smoower Developer Ecosystem Index.

Duo Security (rank #278) holds a narrow lead over MailerSend (rank #401) on the overall Smoower ecosystem score (46 vs 41). The gap of 5 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Duo Security is ahead of MailerSend. On education (docs, guides and learning material for developers), MailerSend is ahead of Duo Security. On momentum (release cadence and how fast the ecosystem moves), Duo Security is clearly ahead of MailerSend.

Duo Security carries 1,477 GitHub stars across 52 public repos, with 15 repositories active in the last 90 days and 6 external contributors on record. MailerSend shows 499 stars across 22 public repos, 12 active in the last 90 days and 7 external contributors.

Duo Security is the stronger read for anyone weighting momentum. MailerSend looks better where education is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.