Compared to Gmail or Thunderbird the search is very slow

I primarily use the web version of Missive, but only because I then have Grammarly integration. Would love to see it on the desktop version.

Opposite to the new merge feature, I'd like to be able to split emails for when those who are part of the conversation should no longer be privy to what's being said. This is especially important because people emailing me and my colleagues have no expectation that the emails are being shared/viewed by more than just the recipient.

This could be a killer feature for Missive: https://www.ifnoreply.com/ :)

Following the popular features in competitors like Hey (for work) and superhuman I would love the ability to pre-filter spammy people, newsletters or notifications. This can come in two forms: Mute: Emails automatically archived (so you can still find them back if it actually contained useful stuff) Block: Delete emails/or IMAP block If it is a simple button that creates a new rule that is fine by me, however copying a sender email and creating the rule manually is too cumbersome.

Measure performance metrics like response time and message volume for more data-driven decisions thanks to users statistics.

The way Front App manages this is much better Labels in gmail / front are the same. Not having colour coding on the gmail labels makes them not as useful. But if we move to missive labels there is no easy way to relabel anything

As a team communication tool, it'd be helpful to see when my teammate has read my chat message. Not sure how this scales to many teammates, maybe similar to a group Messenger conversation? (showing people's faces at the last message they've read)

Would be great to have a filter to view open tasks.

Please add the ability to merge emails/conversations by drag and drop.