MailerSend vs Proton Mail

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

MailerSend and Proton Mail sit at essentially the same overall ecosystem score (41), which is unusual and worth reading through the pillars below.

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

MailerSend carries 499 GitHub stars across 22 public repos, with 12 repositories active in the last 90 days and 7 external contributors on record. Proton Mail shows 16,265 stars across 186 public repos, 19 active in the last 90 days and 20 external contributors. The star gap on its own does not decide the comparison, but Proton Mail's footprint is roughly 32.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

MailerSend is the stronger read for anyone weighting education. Proton Mail looks better where momentum 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.