Boomerang for Gmail creators launch Respondable to help you write better emails using A.I.
The battle over how to make our lives more productive continues, especially on the email front. Baydin has spent the past six years helping people bring a degree of normalcy to their inbox through its Boomerang for Gmail plugin.
Context & Ripple Effects
Baydin built its name on Gmail's own Smart Reply era-adjacent territory: six years of Boomerang for Gmail made the plugin a fixture of power-user inboxes before Google shipped native reply suggestions in late 2015. Respondable extends that position from when-you-deal-with-email to how-you-write-it, putting an AI writing coach inside the compose window.
The move matters because it stakes out third-party turf on top of Gmail just as the platform owner starts building the same capability natively — a pattern Grammarly later repeated at business scale with its generative-AI thread summarizing and reply drafting.
First-order effects
- Boomerang's installed base gets real-time writing feedback inside Gmail's compose window, deepening Baydin's lock-in beyond scheduling and reminders.
- Respondable puts Baydin in direct overlap with Gmail's native Smart Reply suggestions, which launched the prior November for quick replies.
Second-order effects
- Platform owners respond by absorbing the feature: Google's later Gemini-powered contextual Smart Replies moved from three canned responses to full drafted replies for paid Gmail users, squeezing standalone assistants on distribution.
- Third-party rivals like Grammarly formalize the same wedge into an enterprise product with Grammarly Business, proving the write-better-email layer can be sold cross-platform rather than per-client.
Third-order effects
- If the pattern holds, email clients consolidate into AI work surfaces where the platform owner controls the model — and critics argue that locked-down prompts make such features feel useless to power users, per the system-prompt rigidity critique of Gmail's assistant.
- The end state is contested control of the inbox: Google pushing toward briefing-style assistance like its CC daily digest experiment, while independent plugins fight to stay relevant on someone else's API terms.
The trend: Email is shifting from a medium humans write unaided to an AI-assisted surface, with platform owners absorbing what independent plugins pioneer first.