What e-mail service are you using for your team? And what is the pros and cons of it?

Great question! I just researched this a lot.

We user G Suite / Gmail which is always a great choice. We then bolted on and tried different tools:

Front
Lets you connect multiple inboxes as well as tools like Intercom, Facebook Messenger and more 'channels'. Allows you to collaborate on emails, share entire inboxes and assign them. It works great, is pretty expensive but is definitely the best you can get in the market at the moment.

Pros:

• Include all channels in one area (including non-email)
• Fully featured email client
• Easily see history of conversations with one person across channels
• Integrates well with many other tools

Cons:

• Expensive – they literally just increased their prices again we're looking at $200 for 4 people for the full product. On the other hand they also introduced a 'in between' pricing which we might consider.
• Keeps it own history/read status and tags on Gmail, which makes your normal email out of sync.

Hubspot
Additionally we log all sales and account related emails to Hubspot. It works really great as we now can see -at once- what has been communicated to individuals, but also across one entire customers. It works by simple bcc'ing Hubspot (or starting an email from there) and connecting Gmail. It will then automatically include all new replies.

Pros:

• Good '360° view of customers' (gee, finally got to use that term in a sentence)
• Comes as part of huge CRM set

Cons:

• Not really great for non-sales conversations
• Needing to bcc is a bit frustrating.

Spark
Spark just started rolling out 'email collaboration' which allows you to have comments around your email. It's a bit simple, but in a scenario where there are no shared inboxes (i.e. 'support@...') but just personal might just be what you need.

Pros:

• Slick app, more like a personal inbox
• Steady rate of development

Cons:

• No sharing of entire inboxes.

Missive
This the biggest challenger of Front App, with a really sturdy and smooth app, that works & looks great. Trialing this now as a replacement for Front, and I am impressed. It's really a tie between Front and Missive at the moment.

Pros:

• App feels much more stable than Front
• A bit cleaner interface
• Realtime collab on mails
• Nice slack-like support for webhooks/3rd channels
• Support an Indie business cc @PhilippeLehoux

Cons:

• No support yet for Intercom or comparable services
• No contact history (yet)

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Now that became a longer answer than intended. What I'd love is an email tool that's like Missive or Front, but with some company overview (see all contact from different employees of one client).