AltCatalog
CatalogEmail clients

Email clients

22 apps ranked by verified data. See how ranking works

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01

Full-featured desktop client with one-time license.

Proprietary WindowsmacOSiOSAndroid
Alt Score

Alt Score · 96

How this alternative ranks. How it works →

Verified coverage 90%95
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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02

Cross-platform unified inbox.

Proprietary WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 92

How this alternative ranks. How it works →

Verified coverage 90%91
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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03

PGP-capable mail with AI writing.

Proprietary WindowsmacOSiOSAndroid
Alt Score

Alt Score · 92

How this alternative ranks. How it works →

Verified coverage 90%91
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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04

Veteran secure Windows mail client.

Proprietary Windows
Alt Score

Alt Score · 92

How this alternative ranks. How it works →

Verified coverage 90%91
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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05

The built-in Apple mail client.

Proprietary macOSiOS
Alt Score

Alt Score · 87

How this alternative ranks. How it works →

Verified coverage 90%86
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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06

Windows-first unified inbox.

Proprietary WindowsmacOS
Alt Score

Alt Score · 87

How this alternative ranks. How it works →

Verified coverage 90%86
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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07

Privacy-first Android email.

GPL-3.0 Android
Alt Score

Alt Score · 87

How this alternative ranks. How it works →

Verified coverage 90%86
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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08

GNOME's full groupware client.

LGPL-2.1 Linux
Alt Score

Alt Score · 84

How this alternative ranks. How it works →

Verified coverage 90%82
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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09
M

Open source client with read receipts.

GPL-3.0 WindowsmacOSLinux
Alt Score

Alt Score · 84

How this alternative ranks. How it works →

Verified coverage 90%82
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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10

Shared inboxes and team email collaboration.

Proprietary WebWindowsmacOSiOS +1
Alt Score

Alt Score · 84

How this alternative ranks. How it works →

Verified coverage 90%82
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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11

Microsoft's mail and calendar client.

Proprietary WindowsmacOSiOSAndroid +1
Alt Score

Alt Score · 84

How this alternative ranks. How it works →

Verified coverage 90%82
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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12

Mozilla's open source desktop mail.

MPL-2.0 WindowsmacOSLinux
Alt Score

Alt Score · 76

How this alternative ranks. How it works →

Verified coverage 90%73
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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13

Smart inbox with team comments.

Proprietary WindowsmacOSiOSAndroid
Alt Score

Alt Score · 71

How this alternative ranks. How it works →

Verified coverage 90%68
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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14

AI-first Gmail client from ex-Googlers.

Proprietary WebmacOSWindowsiOS +1
Alt Score

Alt Score · 68

How this alternative ranks. How it works →

Verified coverage 90%64
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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15

The terminal mail power tool.

GPL-2.0 LinuxmacOS
Alt Score

Alt Score · 68

How this alternative ranks. How it works →

Verified coverage 90%64
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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16

Power-user desktop mail (acquired by eM Client).

Proprietary macOSWindows
Alt Score

Alt Score · 63

How this alternative ranks. How it works →

Verified coverage 90%59
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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17

Native macOS client for Gmail.

Proprietary macOS
Alt Score

Alt Score · 60

How this alternative ranks. How it works →

Verified coverage 90%55
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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18

Configurable Android mail client.

Proprietary Android
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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19

Speed-obsessed premium email.

Proprietary WindowsmacOSiOSAndroid +1
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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20

GNOME's lightweight mail app.

LGPL-2.1-or-later Linux
Alt Score

Alt Score · 50

How this alternative ranks. How it works →

Verified coverage 90%45
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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21

Open source Android mail, now Thunderbird Mobile.

Apache-2.0 Android
Alt Score

Alt Score · 47

How this alternative ranks. How it works →

Verified coverage 90%41
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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22
a

Modern terminal email for developers.

MIT LinuxmacOS
Alt Score

Alt Score · 42

How this alternative ranks. How it works →

Verified coverage 90%36
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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