Boomerang vs Right Inbox: Honest Comparison for 2026
If you use Outlook, stop reading. Right Inbox doesn't support it. Boomerang does. Decision made.
We've tested both extensions side by side on Gmail, and for everyone else, the Boomerang vs Right Inbox choice comes down to what you actually need: meeting scheduling and a mature ecosystem, or sequences and mail merge baked into your inbox.
Pick Boomerang if you want meeting scheduling, Outlook support, or the most established Gmail productivity extension available.
Pick Right Inbox if you need email sequences and mail merge without leaving Gmail.
Skip both if your real problem is finding verified email addresses in the first place. Neither tool helps you build a contact list - that's a different problem entirely, and one we'll touch on later. (If that's your situation, start with a proper email checker tool or a full email ID validator list.)
Pricing Breakdown
Both tools are cheap. This isn't a $30k/year ZoomInfo decision - it's a coffee-budget line item.
| Tool | Free Plan | Entry Paid (Annual) | Mid Tier (Annual) | Top Tier (Annual) |
|---|---|---|---|---|
| Boomerang | 10 message credits/month | $4.98/mo | $14.98/mo (Pro) | $49.98/mo (Premium) |
| Right Inbox | 5/month caps on core features | $7.95/mo | $16.95/mo (Team) | - |
Boomerang's entry price is hard to beat at $4.98/mo on annual billing. One caveat worth knowing: the Personal plan is restricted to @gmail.com addresses. Google Workspace users need Pro ($14.98/mo) or higher. Right Inbox's Professional tier starts at $7.95/mo annually, or $9.95/mo if you go month-to-month.
The gap widens at the top. Boomerang Premium at $49.98/mo gets you Salesforce/CRM integration, Respondable AI, and priority support. Right Inbox tops out at $16.95-$19.95/mo, with no CRM integration at any tier.
Feature Comparison
| Feature | Boomerang | Right Inbox |
|---|---|---|
| Send Later | ✓ | ✓ |
| Email Tracking | ✓ | ✓ |
| Reminders | ✓ | ✓ |
| Inbox Pause | ✓ | - |
| Recurring Emails | ✓ (Pro+) | ✓ |
| Templates | - | ✓ |
| Email Sequences | - | ✓ |
| Mail Merge | - | ✓ |
| Meeting Scheduling | ✓ | - |
| Salesforce/CRM Integration | ✓ (Premium) | - |
| AI Assistant | ✓ (Respondable) | - |
Right Inbox wins the outbound rep feature set. Sequences and mail merge inside Gmail are genuinely useful if you're running small-scale cold outreach without a dedicated sequencer - think a founder sending 50-100 personalized emails a week, not an SDR team blasting thousands. Boomerang wins on scheduling and ecosystem: meeting scheduling with Magic Live Calendar, Respondable AI for email coaching, and Salesforce integration on Premium.
Let's be honest, though. The overlap between these two tools is bigger than the differences. Send later, tracking, reminders, recurring emails - both handle those fine. The real decision hinges on whether you need sequences (Right Inbox) or meeting scheduling and CRM hooks (Boomerang). If you're building a modern outbound motion, it's also worth comparing against broader cold email marketing tools and proven best sales sequences.
The Outlook Filter
Boomerang works with Outlook 2021+, Outlook for Mac, and Outlook on the web, though it requires a Microsoft-hosted account or an Exchange 2016 hybrid deployment. On-prem Exchange without hybrid won't work. Right Inbox is Gmail-only, full stop. If your company runs on Microsoft's ecosystem, this comparison is over before it starts.
Boomerang and Right Inbox both assume you already have the right email address. Bad assumption. 35% bounce rates kill sender reputation faster than any scheduling trick can save it. Prospeo gives you 143M+ verified emails at 98% accuracy - so every scheduled send actually lands.
Verify before you schedule. Start free with 75 emails, no credit card.
What Users Actually Say
Boomerang carries a 4.6/5 on G2 from 420 reviews. Right Inbox sits at 4.8/5 - but from just 21 reviews. In our experience, review count matters far more than rating when the sample sizes are this different. Right Inbox claims 250,000+ users, yet only 21 people left detailed G2 feedback. That tells you most users don't feel strongly enough to write about it.
On Capterra, the picture flips: Boomerang scores 4.7 while Right Inbox drops to 4.1.
Here's the thing about Right Inbox's Trustpilot profile: it surfaces a pattern that's hard to ignore. Multiple reviewers report being billed after cancellation. Others describe sent emails disappearing from their Sent folder and attachments going missing. On the positive side, a January 2026 reviewer praised the reminders and responsive support. But the billing complaints are consistent enough that you should double-check your subscription status if you sign up.
Other Options Worth Knowing
If neither tool fits, two alternatives deserve a look.
Mixmax combines sequences and meeting scheduling in one Gmail extension - it's the pick if you want both without juggling two tools. GMass is the go-to for high-volume mail merge inside Gmail, making it absurdly cheap for bulk sending. If you're trying to scale outreach safely, pair any of these with an email deliverability checklist and a solid email verification for outreach workflow.
Before You Schedule, Verify
Neither Boomerang nor Right Inbox helps you find the right person to email. Both assume you already have a verified address. That's a big assumption, and one that tanks reply rates when it's wrong. If you're still building lists, start with list building tools or a dedicated email hunter stack.
Sequences and mail merge are useless if half your list bounces. Prospeo's 5-step verification and 7-day data refresh cycle mean you're always sending to real, active inboxes - at ~$0.01 per email, not $1 like legacy providers.
Fix the list problem neither Boomerang nor Right Inbox can touch.
Final Recommendation
Hot take: Both of these tools solve a problem that barely exists anymore. Gmail's native "Schedule Send" covers most of what people originally used Boomerang for years ago. The real question isn't which scheduler to pick - it's whether you need one at all.
If you do, here's the breakdown:
For most Gmail users: Boomerang. Better value at $4.98/mo, 420 reviews of social proof, and meeting scheduling that Right Inbox can't match.
For Outlook users: Boomerang. It's your only option here.
For outbound reps who need sequences and mail merge inside Gmail: Right Inbox, but verify your list first. Sequences don't matter if half your emails bounce.
For teams with CRM needs: Boomerang Premium. It's the only tool in this comparison with Salesforce integration.
FAQ
Is Boomerang for Gmail really free?
Yes, but the free plan caps you at 10 message credits per month. Credits cover scheduled messages and feature combos like Send Later, Response Tracking, and Read Receipts. Most active users upgrade to the $4.98/mo Personal plan. That tier only works with @gmail.com - Google Workspace users start at $14.98/mo for Pro.
Does Right Inbox work with Outlook?
No. Right Inbox is Gmail-only. If you need Outlook support, Boomerang works with Outlook 2021+, Outlook for Mac, and Outlook on the web with Microsoft-hosted accounts or Exchange 2016 hybrid deployments.
What if I need verified emails before sending?
Neither tool finds or verifies contacts. Prospeo handles that with 143M+ verified emails at 98% accuracy and a free tier of 75 emails per month - it's the step both Boomerang and Right Inbox skip entirely.
