Proton Mail vs sendinblue (now Brevo)

Proton Mail and sendinblue (now Brevo) both appear on the Smoower Developer Ecosystem Index.

sendinblue (now Brevo) (rank #372) holds a narrow lead over Proton Mail (rank #401) on the overall Smoower ecosystem score (42 vs 41). The gap of 1 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Proton Mail is ahead of sendinblue (now Brevo). On education (docs, guides and learning material for developers), sendinblue (now Brevo) is clearly ahead of Proton Mail. On community (issue response, PR reviews and discussion health), Proton Mail is clearly ahead of sendinblue (now Brevo). On reach (how visible the ecosystem is beyond its own repos), Proton Mail is ahead of sendinblue (now Brevo). On momentum (release cadence and how fast the ecosystem moves), Proton Mail is clearly ahead of sendinblue (now Brevo).

Proton Mail carries 16,265 GitHub stars across 186 public repos, with 19 repositories active in the last 90 days and 20 external contributors on record. sendinblue (now Brevo) shows 653 stars across 37 public repos, 0 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Proton Mail's footprint is roughly 24.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Proton Mail is the stronger read for anyone weighting momentum. sendinblue (now Brevo) 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.