Accessible Email Apps

Hi all,
I'm looking for an accessible email client. I am using Outlook but have found that it has many issues with Voiceover when composing email, specifically when typing in the message body and when selecting a contact to send the email to. This app is great, however, because of the focused inbox. However due to the nature of composing emails, I am forced to search for an alternative. Are there any apps anyone recommends that has a feature like focused inbox and works well with voiceover? I am refraining from using the built-in app because it too has many bugs as of iOS 13 and doesn't have a focused inbox-like feature. Thank you!