According to Streak’s pricing page, checked on 11 November 2026, Streak runs only in Gmail, its free plan allows 50 mail-merge sends a day without CRM pipelines, and paid plans add pipelines. Superhuman describes its read statuses on its own blog; we could not confirm their current default settings on that date. We have no checked data on Boomerang or Bananatag, so we do not compare them.
Any read status built on a tracking image is affected by Apple Mail Privacy Protection and mail-provider proxies. HawkOpen shows which rule applied to each open and never presents an open as proof of reading.