Apps like Swisscows Email - Secure mail

Here are some great alternatives to Swisscows Email - Secure mail by Swisscows :
Internetschutz Plus
Internetschutz Plus
★4.4
SpardaSecureApp
SpardaSecureApp
★3.3
1&1 Mail
1&1 Mail
★4.6
mail.de Mail
mail.de Mail
★4.2
Telekom Mail – E-Mail App
Telekom Mail – E-Mail App
★3.4
Die Continentale RechnungsApp
Die Continentale RechnungsApp
★4.8
DATEV SmartLogin
DATEV SmartLogin
★3.5
Brillux
Brillux
★5.0
Vodafone E-Mail & Cloud
Vodafone E-Mail & Cloud
★5.0
Proton Mail: Encrypted Email
Proton Mail: Encrypted Email
★4.5
Tuta: Secure & Private Mail
Tuta: Secure & Private Mail
★4.6
Temp Mail
Temp Mail
★4.2
Evap Mail - Temporary Email
Evap Mail - Temporary Email
★5.0
mail.ch Mail
mail.ch Mail
★3.6
mail.co.uk Mail
mail.co.uk Mail
★4.4
mail.com: Email app & Cloud
mail.com: Email app & Cloud
★4.5