| Postbox for Mac OS X | Missive for Mac OS X | Mutt | Thunderbird for Mac | |
| 7.0.45 | 10.56.1 | 1.12.1 | 115.12.2 | |
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| Trialware | Demo | Freeware | Freeware | Licence |
| $29.99 | $10.00 | FREE | FREE | Price |
| 56.30 MB | 164.00 MB | 4.50 MB | 119.00 MB | File size |
| Jan 22, 2021 | Jan 19, 2024 | Jun 15, 2019 | Jun 24, 2024 | Update |
| 54 | 46 | 47 | 66 | Downloads |
| Mac OS X | Mac OS X | Linux, Mac OS X | Mac OS X | OS |
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