Boomerang
Gmail and Outlook add-on that schedules sends, brings back messages that get no reply, and checks drafts with its Respondable feature.
- Free plan or free tier
- Works with Gmail
- Works with Outlook
CRM that lives inside Gmail: pipelines of email threads, mail merges, tracking and AI summaries of deals.
Not enough info yet on works with Outlook, developer API. Check the tool's own site.
Listing written by MailOverload, checked 2026-11-03. Report a correction or request removal. Back to follow-ups and reminders.