Currently Delta Chat does not send messages which are larger than the recommeded message size (it’s 18 MB for me). I see this is because many email provider does not accept large attachments. I’d be really happy if somehow it supports large attachments. My email provider does not limit message size.
The ideal would be to detect the limit, but sadly mailserver softwares does not disclose it beforehand, just when you already uploaded a message to large.
An other workaround is to send multiple emails constituting a single large piece of message, altough it won’t be compatible with common email practices.
Thirdly, the user may set the limit as an app setting, but this is a bit annoying because 1 limit does not fit to all email providers, and setting this limit per each domain, per each contact is quite tiresome.
The best approach maybe is to keep not sending large messages but let users approve to sent them regardless: eg. by a “Send it anyway” button.
thanks for consideration.