Mailbutler Inbox Collaboration
mailbutler.io · checked 4 Oct 2026
How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on Email Collaboration Software5.3#25 of 35

Pricing
- StarterMonthly billing; pricing page also offers yearly billing. · Email tracking · Message templates · Mail merge$5/mo
- ProfessionalMonthly billing · Email assignments · Collaborator status · Shared notes and tasks · Tags · Automations$9/mo
- SmartMonthly billing · Inbox Collaboration · AI email composition and improvement · Smart task finder · Email tracking$14/mo
- BusinessMonthly billing · Inbox Collaboration · CRM tracking data sync · Custom subdomain · Custom SMTP$32/mo
As mailbutler.io lists them, checked 4 Oct 2026.
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