Boomerang Respondable scores your emails for likelihood of getting a reply — suggesting subject lines, word count, and tone changes to maximize response rates.
How Boomerang Respondable compares with its closest alternatives
3 of the 5 closest alternatives have a free plan, as Boomerang Respondable does. Among the 2 that list a starting price, the cheapest is Otto AI at $49 a month and the median is $49. Boomerang Respondable starts at $5 a month, below that median. 3 of the 5 offer an API; FalcoScan's records show none for Boomerang Respondable. Boomerang Respondable offers a browser extension. Of the alternatives, none offers a browser extension. Boomerang Respondable was founded in 2011; the alternatives were founded between 2019 and 2025. The alternatives with a known headquarters are in Singapore, the United States and Germany.
Market position · Agents
How Boomerang Respondable compares in Agents
Boomerang Respondable has moderate opportunity and sits in the bottom third of 423 live Agents tools on FalcoScan. Across Agents, the average opportunity score is 72.6 and the average saturation score 31.5. FalcoScan rates Boomerang Respondable's own market position as open. 179 of the 423 operating Agents tools have hot momentum, and FalcoScan has recorded 15 shutdowns in the category.
Boomerang Respondable compared with its closest alternatives
Boomerang Respondable has a free tier, with paid plans from $5 a month.
What are the best alternatives to Boomerang Respondable?
The closest alternatives to Boomerang Respondable that are still running, matched on the AI capabilities, uses and audience they share, are Hellomatik, Enprose, Hue, Otto AI, and Levity.
Is Boomerang Respondable still running?
Yes. As of 2 November 2026, FalcoScan lists Boomerang Respondable as operating at boomeranggmail.com.
Does Boomerang Respondable have an API?
FalcoScan's records show no public API for Boomerang Respondable.
Who is Boomerang Respondable for?
Boomerang Respondable is built for professionals and sales teams.
How do I sign in to Boomerang Respondable?
Sign in on Boomerang Respondable's own website, boomeranggmail.com. FalcoScan reviews Boomerang Respondable but does not run its accounts, so logins, passwords and billing are handled by Boomerang Respondable directly.