Ranked in these QuestionsQuestion Ranking
Pro Open Source
Pro No phone number required
Pro No registration required
Pro PGP-encrypted via Autocrypt Guideline
Pro Uses well-established protocols
Everyone knows/uses Email.
Pro Distributed architecture
There is no central Delta Chat server
Pro You can share a document, a file, an image, an audio even with applications outside Delta Chat
Pro You can forward a message from one chat to another
Pro You can set a ringtone for each chat
Pro Multi account
Pro You can decide to set a limit for the size of messages that will be downloaded automatically
Pro You can send stickers and animated stickers
Pro Bots can be created
Without needing to have a space on a server, just a simple PC and an email for the bot.
Pro You can create broadcast lists
It will be present in the next version.
Pro Independent video chat
You can use Jitsi Meet or other providers.
Pro Disappearing messages
It has messages that disappear automatically.