Lightweight product email

BitterInbox

A lightweight, affordable inbox with great UX for founders and small teams.

Send, receive, compose, reply, and search from a clean product inbox. No heavy helpdesk, no CRM sprawl, no mystery sender defaults.

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Feels like email

A fast inbox, clear compose flow, replies, sent mail, drafts, and failed-send recovery.

Clear sender identity

Always know which mailbox, alias, and sender you are operating as before a message leaves.

Quietly reliable

Delivery details and receipts stay available in settings, without crowding the daily inbox.

Simple pricing

One small inbox, one small price.

BitterInbox is built for the product email you actually use every day: founder identity, support replies, follow-ups, and delivery visibility when something needs attention.