What's the text limit?

Is there a limit to how many characters Meshtastic can send in a message?

Just curious as I remember the days of Usenet where images were converted into text and sent as a message then decoded back to an image on download. Something like that in Meshtastic would be kinda cool. Even just small 320x200 images. Could be helpful in cases of emergencies to send a photo of your surroundings.

Around 237 bytes per packet.