The best alternatives to SharedInbox are Consider, Alert.email, and Gmelius. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of SharedInbox?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Gmelius is the first collaboration platform designed for G Suite and your company's daily apps. Gmelius transforms Gmail into your team's workspace. Collaborate in real-time thanks to shared mailboxes, a help desk, Trello-like boards and sales automation tools.
Helpwise is an easy-to-use customer service platform that allows teams to answer all customer queries across multiple channels from one single place in less time.
SharedBox gives you a unique email that connects to your Slack account. Emails sent or forwarded to it is sent to your choice Slack channel, properly threaded. Collaborate with your team, comment, add notes and reply directly from Slack.
Designed for folks who need to use Slack but: + have internet speed or data limitations, or + have an established email-based workflow. Made by Nicki Vance (@wootbeep, http://www.nickivance.com/) and Kevin Lynagh (@lynaghk, https://kevinlynagh.com/).