sendreceive
The folder is in default mode. Sending local and accepting remote changes. Note that this type was previously called “readwrite” which is deprecated but still accepted in incoming configs.
sendonly
The folder is in “send only” mode – it will not be modified by Syncthing on this device. Note that this type was previously called “readonly” which is deprecated but still accepted in incoming configs.
receiveonly
The folder is in “receive only” mode – it will not propagate changes to other devices.
receiveencrypted
Must be used on untrusted devices, where the data cannot be decrypted because no folder password was entered. See Untrusted (Encrypted) Devices.
https://docs.syncthing.net/users/config.html
Adjust the config settings:
sendreceive The folder is in default mode. Sending local and accepting remote changes. Note that this type was previously called “readwrite” which is deprecated but still accepted in incoming configs.
sendonly The folder is in “send only” mode – it will not be modified by Syncthing on this device. Note that this type was previously called “readonly” which is deprecated but still accepted in incoming configs.
receiveonly The folder is in “receive only” mode – it will not propagate changes to other devices.
receiveencrypted Must be used on untrusted devices, where the data cannot be decrypted because no folder password was entered. See Untrusted (Encrypted) Devices.
Yeah, I have the folder on the phone on sendonly. But this sends also deletions to the server, apparently.
Ignore delete is a folder feature that you can set on the receiving folder.