The table below lists approved email clients and features.

Category	Name	Outlook (2019, 365)	OWA	Apple Mail/iOS app	Thunderbird	Gmail for Android	Samsung Email	Aqua Mail for Android	Blackberry Hub+Services	Evolution	MailSpring
Platform	Windows	●	●		●						●
Platform	MacOS	●	●	●	●						●
Platform	iOS	●	●	●
Platform	Android	●	●			●	●	●	●
Platform	Linux		●		●					●	●
General feature	Schedule Send	●	●		●	●		●			●
General feature	Support multiple accounts	●	●	●	●	●	●	●	●	●	●
General feature	Organize Emails	●	●	●	●	●	●	●	●	●
General feature	Junk Filtering	●	●	●	●	●	●	●	●	●
General feature	Calendar Support	●	●	●	●	●	●	●	●	●
General feature	Modern Authentication	●	●	●	●	●	●	●	●	●	●
General feature	Spelling & Grammar	●	●	●	●	●		●	●	●	●
General feature	Signatures	●	●	●	●	●	●	●	●	●	●

*Pending implementation