A: Hi Sarahlee.pwc,

Thanks for your interest in Mystrika.

Mystrika absolutely supports any and all Email Service Providers (including Free ESP), that have standard SMTP and IMAP service.

This includes (and is not limited to) free hotmail.com, outlook.com, Zoho etc.

Remember free plan on Zoho, doesn't come with SMTP/IMAP service though.
And same is the case with Proton Mail.

Here is the video guide for Zoho setup : https://mystrika.com/knowledge-base/article/add-email-address-from-zoho/