Outsolvi vs Boomerang: the best Boomerang alternative in 2026
Updated May 23, 2026
Quick answer
Outsolvi is the tracking-first alternative to Boomerang. Boomerang is an email-scheduling and inbox-productivity tool with tracking added as a secondary feature, priced for Outlook from a free Basic plan through $4.99 per month (Personal, Outlook.com addresses only) and $14.99 (Pro), both billed annually, with Teams and Enterprise plans above that. Outsolvi is purpose-built for tracking with graded opens, bot and scanner filtering, hot-lead detection, keyword reply labels, and native Outlook and Gmail support, starting at $7 per user per month billed yearly ($12 monthly). Pick Boomerang if send-later and snooze are your daily-driver features. Pick Outsolvi if open accuracy and follow-up intelligence are what you came for.
Boomerang started as a Gmail send-later button and grew into a productivity suite around scheduling, snoozing, and reminders. Tracking arrived later as a checkbox on the compose toolbar, and that is roughly where it has stayed: the open-rate counter is functional but not where the engineering investment goes.
That positioning shapes everything downstream. There is no grade telling you which opens are real, no sentiment labels on recent replies, no bot filtering for Apple Mail Privacy Protection. If a prospect's corporate firewall pre-fetches the pixel, Boomerang will count an open and you will not know it wasn't one. For someone whose product is reminders and clean inboxes, that is an acceptable trade. For an Account Executive treating opens as a buying signal, it is not.
The Outlook add-in is the second tell. Boomerang ships it, but the feature gap between the Gmail extension and the Outlook side has been visible for several releases. If your team lives in Outlook and the buyer-due-diligence question is whether the vendor will keep building for you, it is worth checking where the Outlook roadmap sits before signing an annual contract.
Outsolvi is the tracking-first alternative to Boomerang. Boomerang is a scheduling and inbox-productivity tool that happens to track opens; the engineering investment lives on send-later, snooze, and reminders, not on signal quality. There is no open grading, no bot filtering, no reply sentiment labels, and the Outlook add-in lags the Gmail extension on feature parity. Outsolvi is $7 per user per month billed yearly with graded opens, Outlook plus Gmail in one dashboard, hot-lead detection, and keyword reply labels. If scheduling is your job-to-be-done, Boomerang stays the right pick. If tracking accuracy is, the 14-day Outsolvi free trial is the cleanest way to compare on real send volume.
How Outsolvi compares to Boomerang (feature by feature)
Switch from Boomerang in 2 minutes.
Install Outsolvi for Outlook or Gmail, send your next email, and see who opened it. $7/mo yearly · $12 monthly once your trial ends.
Why teams choose Outsolvi
Outsolvi is built around the tracking signal that Boomerang treats as a checkbox. Every open is graded as verified (the person replied), most likely human, possibly human, or a machine such as an Apple Mail prefetch or a security scanner, and only the first two are counted. Boomerang reports raw pixel loads with no scoring layer underneath, so on Apple-heavy lists or corporate-firewall-heavy domains, its open numbers run high. An email is flagged as a hot lead once it has five counted opens and two clicks. Replies are labelled positive, negative, neutral or out of office by keyword rules. The product runs natively in Outlook (classic, web and new Outlook) plus Gmail through a Chrome extension, with one unified dashboard, and team analytics come with Pro at $20 a user. Pricing is $7 per user per month billed yearly, against $14.99 a month billed annually for Boomerang for Outlook's Pro plan.
Where Boomerang excels
Boomerang has had longer to refine the productivity side of the inbox. Email scheduling, send-later, recurring sends, and snooze are the daily-driver features here, and they are well-built. Respondable, the AI writing-quality feedback layer, gives a useful pre-send check on tone and readability. Calendar booking links sit inside the compose pane so reps do not need a separate Calendly seat. For someone whose job is inbox-zero personal productivity, Boomerang is the right tool. The trade-off is that the tracking layer underneath is functional but not deep, and the Outlook add-in is lighter than the Gmail extension, so if Outlook is your primary client it is worth confirming the current Outlook roadmap before committing to an annual plan.
Which is right for your team
Honest framing of who each tool fits best. Not every team is the same buyer.
Inbox-zero personal productivity user
Daily-driver features are send-later and snooze. Tracking is occasional curiosity, not the basis for follow-up routing. Solo user or small team without a sales motion.
Boomerang. Scheduling and snooze are the load-bearing features here, and basic tracking is enough. The Personal tier at $4.99 per month billed annually is the cheapest paid option, though in Outlook it works only with Outlook.com, Hotmail and Live addresses.
Account Executive routing follow-ups off open signals
Opens are a buying signal. Reply rate is the KPI, but open accuracy is what triggers the next call or email. Apple-heavy or firewall-heavy prospect lists. Mixed Outlook and Gmail.
Outsolvi. Graded opens separate real engagement from pixel pre-fetch noise, and the hot-lead flag shows which emails to follow up on first. Native Outlook and Gmail support in one dashboard.
Outlook-heavy team comparing tracker roadmap commitment
Team is 70 percent Outlook. Current tracker's Outlook add-in feels lighter than its Gmail extension. Evaluating whether to invest in a tool built around their primary client.
Outsolvi. Opens from classic, web and new Outlook are graded by the same rules as Gmail and land in one dashboard. Outlook for Mac isn't supported, so check that before you switch.
Switching from Boomerang to Outsolvi
What to expect, in order. The 14-day Outsolvi trial covers the whole switch.
Day 0 (before you cancel)
Export any Boomerang templates you actually use (Settings, Templates, copy as text). Export your scheduled-send queue so you know what to reschedule. Boomerang stores scheduled sends on its servers, so uninstalling cancels pending sends; finish or reschedule those first.
Day 1
Add the Outsolvi Outlook add-in from your dashboard, or install the Gmail Chrome extension. Sign in with your business email. Tracking starts on next send. Boomerang can stay installed if you want to keep snooze and recurring sends running in parallel during the trial.
Day 7
Compare the same week's open numbers between Boomerang and Outsolvi. Expect Outsolvi's open count to be lower because Apple MPP prefetches and scanner opens are now left out. Reply rate is the cleaner side-by-side signal. If reply rate held, the lower opens are noise leaving the data, not real engagement.
Day 30
Decide on the overlap. Most teams keep Boomerang's free tier for snooze and recurring sends if those workflows matter, and use Outsolvi as the tracking and intelligence layer. Cancel the paid Boomerang plan if the tracking and team-analytics value was the reason you were paying for it.
Frequently asked questions
Does Boomerang grade opens like Outsolvi does?+
No. Boomerang reports a raw open count from pixel loads. There is no scoring model behind it, so bot opens, prefetched opens, and real opens all count the same. On Apple-heavy lists this typically means Boomerang's open rate runs well above Outsolvi's count of opens graded as a person on the same campaign.
Is Boomerang's Outlook add-in as good as the Gmail extension?+
The Gmail extension is Boomerang's flagship surface and gets the most feature investment. The Outlook add-in works, but it is functionally lighter, fewer scheduling options, fewer tracking refinements. If you are Outlook-first, that gap matters for an annual commitment.
Can I keep using Boomerang for scheduling while using Outsolvi for tracking?+
Yes. Many teams run them side by side: Boomerang for send-later and snooze, Outsolvi for the tracking and intelligence layer. The two extensions do not conflict in the same Chrome profile.
What does Boomerang cost compared to Outsolvi?+
Boomerang for Outlook lists a free Basic plan (10 message credits a month, and read receipts count against them), Personal at $4.99 a month billed annually (Outlook.com, Hotmail and Live addresses only), Pro at $14.99 a month billed annually, and Teams and Enterprise plans. Outsolvi is $7 per user per month yearly ($12 monthly), with graded opens, click tracking, hot-lead flags and reply labels at the base tier. On annual billing, Outsolvi costs less than half of Boomerang Pro.
Will I lose my Boomerang scheduled emails if I switch?+
Scheduled sends in Boomerang are queued on Boomerang servers. Uninstalling Boomerang cancels pending sends, so finish or reschedule those before you remove the extension. Outsolvi schedules follow-ups and sequence steps, not one-off send-later emails; if you rely on Boomerang's send-later or recurring sends, keep the free tier installed alongside Outsolvi for that workflow.
Does Outsolvi do email snooze like Boomerang?+
No. Snooze is a Boomerang-specific workflow. If snooze is core to your inbox routine, keep Boomerang's free tier installed alongside Outsolvi.
The fastest answer is the 14-day free trial against your real send volume. No credit card, setup in 2 minutes.
Boomerang and Outsolvi solve different jobs. Boomerang is a scheduling and inbox-productivity tool with tracking on the side, and the engineering investment lives on send-later, snooze, recurring sends, and Respondable. Outsolvi is a tracking-intelligence tool with graded opens, bot filtering, hot-lead detection, keyword reply labels, and native Outlook support, at less than half the price of Boomerang for Outlook's Pro plan on annual billing. The 14-day Outsolvi free trial costs nothing to test, and dual-running with Boomerang for a week is the cleanest way to see whether your Boomerang open numbers were honest. If they were, you stay. If they were not, you switch.
More about Boomerang
Per-competitor alternatives ranking, head-to-head matchups, and migration guide.
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Every open, every click, every reply, with each open graded as a person or a machine, so bot opens stay out of the count and the signals you act on are real.
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Related comparisons and research
Other comparison pages, head-to-heads, ranked lists, and glossary entries on the same tools and topics.
Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi grades every open as a person or a machine, in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change. new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.