Ross ROSS = Recommend OSS · open-source software intelligence for agents

thunderbird/thunderbird-ios

Thunderbird for iOS – Open Source Email App for iOS observed · 2026-09-03

github.com/thunderbird/thunderbird-ios · Swift · MPL-2.0 (copyleft) observed · 2026-09-03

Health v2 · maintenance only

66/100

  • Activity 100
  • Release rhythm 35
  • Longevity 42

Flags: no_releases

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 590
  • days_rel: n/a
  • days_push: 0
  • n_releases_24m: 0

Full methodology

Adoption not part of the score

1171 stars · 41 forks observed · 2026-09-03

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Thunderbird for iOS is an open-source email client for iOS devices, developed from the ground up by the Thunderbird/Mozilla community. It is currently in an early stage of development and not yet functional for production use.

Use cases

  • read and write email on iPhone or iPad
  • manage multiple email accounts on iOS
  • use a private, open-source alternative to Apple Mail
  • triage email efficiently on mobile
  • integrate email with Thunderbird desktop
  • contribute to an open-source mobile email app

When to choose

  • you want a free, open-source, privacy-respecting email client on iOS
  • you are already a Thunderbird desktop user wanting mobile integration
  • you want to follow or contribute to early development of a new email app

When to avoid

  • you need a fully functional, production-ready email client today
  • you need Android support (this is iOS only)
  • you want a stable app to rely on for daily email

Facets

application · maturity experimental

email developer-tools privacy mobile-development email-client thunderbird mozilla open-source ios swift mobile

1 source

Member repositories

RepositoryRoleHealth v2
thunderbird/thunderbird-iosmain66

For agents

markdown · JSON · MCP: product_card(name="thunderbird/thunderbird-ios")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem