Foxmail
Vumonic Datalabs
myMail: for Outlook & Yahoo
MGL MY.COM (CYPRUS) LIMITED
Gmail
Google LLC
Proton Mail: Encrypted Email
Proton AG
Microsoft Outlook Lite: Email
Microsoft Corporation
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Yahoo
FairEmail, privacy aware email
Marcel Bokhorst, FairCode BV
Cleanfox - Smart Anti Spam
Foxyteam
K-9 Mail
Mozilla Thunderbird