**Important**: Some providers, like ProtonMail, Tutanota and CTemplar, use proprietary email protocols, which make it impossible to use third party email apps.
**Important**: Some providers, like ProtonMail and Tutanota, use proprietary email protocols, which make it impossible to use third party email apps.
Please see [this FAQ](#user-content-faq129) for more information.
Using your own (custom) domain name, which is supported by most email providers, will make it easier to switch to another email provider.
@ -3672,7 +3672,7 @@ You can reset asked questions via the three dots overflow menu in the miscellane
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**(129) Are ProtonMail, Tutanota, CTemplar supported?**
**(129) Are ProtonMail, Tutanota, etc supported?**