Boomerang
8.1#2 in sales email tracking softwareFrom $4.98 a monthFree planAndroidiOSWebAPI
VisitBoomerang vs OutMass
What both publish
| Fact | Boomerang | OutMass |
|---|---|---|
| Data handling | The company says it stores message headers for identification but not message bodies, uses Google OAuth 2.0 and does not sell data. | OutMass says it does not read inbox messages, store received emails, store Microsoft passwords, sell user data, or use campaign content to train AI models. |
| Headquarters | Santa Clara, California, USA | 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom |
| Integrations | Team scheduling integrates with Zoom and Google Meet and supports multiple calendars. | The service uses Microsoft Graph API, Supabase, Stripe, Upstash, and PostHog as third-party services. |
Boomerang plans
- BasicFree
- Personal$4.98 a month
- Pro$14.98 a month
- Premium$49.98 a month
OutMass plans
- FreeFree
- Starter$9 a month
- Pro$19 a month
Pick Boomerang if…
Boomerang suits Gmail users who want to schedule messages, pause incoming mail, and manage follow-ups. Its team scheduling tools may suit organizations coordinating meetings across calendars.
Pick OutMass if…
OutMass suits people who send personalized campaigns from Outlook on the web and want tracking or automated follow-ups. It requires a Microsoft 365 or Outlook.com account and a Chrome or Edge extension.