Probably fake, but as someone who implemented MMS systems years ago, MMS is just SMTP under the hood (with some extra stuff to make phone numbers work like email addresses)[0]. Since it's just stored as a message in a mailbox, it's entirely possible to get the wires crossed. Still, probably fake.
If MMS works like email, does something exist where you can go through all your MMS messages and view or delete them from the SMTP server they’re stored on?
Or, if I delete a MMS message on my phone, does it automatically delete it in said mailbox?
That isn't how email works either. SMTP as a protocol is a series of relaying/delivering servers, but there isn't really any storage being done by this servers aside from as part of queuing. Messages aren't normally "stored" in SMTP except while they're in transit.
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Probably fake, but as someone who implemented MMS systems years ago, MMS is just SMTP under the hood (with some extra stuff to make phone numbers work like email addresses)[0]. Since it's just stored as a message in a mailbox, it's entirely possible to get the wires crossed. Still, probably fake.
[0] https://en.wikipedia.org/wiki/MMS_Architecture
If MMS works like email, does something exist where you can go through all your MMS messages and view or delete them from the SMTP server they’re stored on?
Or, if I delete a MMS message on my phone, does it automatically delete it in said mailbox?
That isn't how email works either. SMTP as a protocol is a series of relaying/delivering servers, but there isn't really any storage being done by this servers aside from as part of queuing. Messages aren't normally "stored" in SMTP except while they're in transit.
SMTP is a protocol for transferring messages, not for storing them (https://en.wikipedia.org/wiki/Message_transfer_agent#Transfe...)
So the claim is that the sending part of MMS is like the sending part of email.
Depends on your provider, but a number of them have SMTP Gateways for SMS/MMS.
They likely don't have POP3/IMAP though which is what would be required for the reading aspect.