Permit external access.

[X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
[X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
[X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
[X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
[X] This issue contains only one feature request.
[X] I have read and understood the contribution guidelines.
[ ] I optionally donated to support the Fossify mission.

Allow users to access their SMS, MMS, and RCS messages from external devices, like Google Messages and Apple Messages allow.

I currently use it via Google Messages, and don't want to lose this functionality.

FossifyOrg / Messages