vs
Spark vs Thunderbird
A side-by-side comparison of Spark and Thunderbird.
| Visit website | Visit website | |
|---|---|---|
| Description | Smart email app that sorts your inbox and adds AI tools | Free, open-source desktop email client from Mozilla |
| Pricing | FreemiumProprietary | FreeOpen source(MPL-2.0) |
| Developer | Readdle | MZLA Technologies (Mozilla) |
| Ratings | 4.6(82.7K) · App Store | — |
| Platforms | ||
| Windows | ||
| Mac | ||
| iPhone | ||
| Android | ||
| Linux | ||
| Features | ||
| AI assistant | ||
| Send later | ||
| Team collaboration | ||
| Unified inbox | ||
| Ad-free | ||
| Calendar view | ||
| End-to-end encryption | ||
| Offline mode | ||
| Plugins & extensions | ||
Alternatives to both Spark and Thunderbird
Gmail
Google's free email service with smart filtering
4.7(2.4M) · App StoreExcellent spam filtering and fast search
Freemium12 alternativesMailspring
Open-source desktop email client for Windows, Mac and Linux
17.9KstarsFree and open source on Windows, Mac and Linux
FreemiumOpen source7 alternatives
Apple Mail
Built-in email app for Mac, iPhone and iPad
Free and preinstalled on Mac, iPhone and iPad
Free9 alternatives
Proton Mail
Encrypted email from Switzerland with a free plan
4.8(48.7K) · App StoreEnd-to-end and zero-access encryption protect stored mail
FreemiumOpen source9 alternatives
Microsoft Outlook
Email, calendar and contacts from Microsoft
4.8(9.3M) · App StoreEmail, calendar, contacts and tasks in one app
Freemium12 alternatives
Fastmail
Independent, ad-free email with calendar and contacts
3.8(581) · App StoreAd-free service funded by subscriptions rather than advertising
Free trial9 alternatives