When comparing Mailbird 2.0 vs Mailspring, the Slant community recommends Mailbird 2.0 for most people. In the question“What are the best e-mail clients for Windows?” Mailbird 2.0 is ranked 4th while Mailspring is ranked 5th.
Ranked in these QuestionsQuestion Ranking
Pro Undo send
Pro Excellent UI/UX
The UI looks simple but is customizable. UX is also simple and easy to use.
Pro Free and paid versions
Users who only need to use the basic features of the app have a free version available, though it does limit to only 1 account. There is a paid Mailbird Pro version that does extend functionality and allows for unlimited accounts but it does cost $1.00 a month or $45.00 as a one time fee.
Pro Apps that extend functionality
Mailbird 2.0 supports separate apps that can extend the programs functionality such as Sunrise Calendar, which allows one to add multiple calendars in one view or Evernote which allows for easy not taking and sharing.
Pro Unified Inbox
This allows you to funnel all emails from all accounts into one unified folder, so you don't have to move between different accounts.
Pro Touchscreen support
Mailbird 2.0 has touchscreen support for tablets and other touch screen Windows devices which makes it easy to control no matter what kind of Windows device is being used.
Pro Attachment quick preview
Allows you to preview attachments selected in an email and hit the 'spacebar' to view them rather than having to download it and open a file.
Pro App side bar
This allows you to have one layout with your navigation bar, message list, email convos and productivity apps in view at once so you can work your email and productivity tools synchronously.
Pro Contacts manager
This allows you to easily manage all your email contacts with all critical details in one place. Create groups too. All your contacts in one place and synced with your different email contact providers.
Pro Unlimited email accounts
There is no limit to the number of email accounts you can manage from Mailbird.
Pro Email speed reader
Helps you scan through lengthy emails to get the important parts.
Pro Import feature
This allows you to easily import all your emails from your previous email client to Mailbird.
Pro Neat UI
The UI is very well designed and neat.
Pro Unlimited number of accounts
Pro CPU / battery efficient
Mailspring uses a C++ sync engine designed to be as efficient as possible, so you can leave the app running and not see your laptop battery life drain away.
Pro Snoozing support
You can swipe to archive / snooze messages and specify when you'd like them to resurface in your inbox.
Pro Unified inbox
Using a single inbox for all of your email accounts helps you get more done in less time. Mailspring supports every major mail provider—Gmail, iCloud, Office 365, Outlook.com, Yahoo!, and IMAP/SMTP—so you have a single, streamlined command center for all your messages.
Pro Read receipts and link tracking
Activity tracking is built into Mailspring so you get notified as soon as contacts read your messages and can follow up appropriately.
Pro Great integration with Gmail
Mailspring has great integration with gmail features and tags.
Con No spam filter
Doesn't have spam filter.
Con Mailbird does not support moving emails between accounts
It's a disaster when you need to transfer all mails into a new account but you can't.
Con Can't use without creating a Mailspring ID
There is no need to create a third party ID for an email client. What if the Mailspring closes in the future - can't install a previously downloaded Mailspring software any more to continue using it or access your stored emails?
Con No portable windows (.zip) bundle available
Con Pro subscription model
To use some features, like contact profiles and link tracking more than a few times a month, you need to pay for a Pro subscription.
Con No addressbook
Con No way to see messages as plain text
And HTML is only optional.
Con Very limited user interface
No way to see the messages as a list, no way to rearrange views.
Con UI is sluggish (Windows)
Click and only after a tiny delay (~half second) something happens.
Con Does not support POP
Con Does not support multi-user installation (Windows)
But instead installs to the user's home directory.