Before
Network says delivered, but content is altered
Example: your e-sign SMS includes a signing link, but the network strips the URL. You still get a positive DLR even though customers cannot complete the action.
Why this matters
See what networks can change
Delivery receipts only confirm handoff. They do not prove your final sender ID and message body arrived untouched. SMSProbe shows the real message seen on physical SIMs.
After
Verify exactly what arrived on every network
Compare expected vs received sender and message text per network so you can catch manipulation before customers do.
See what can be blocked after handoff
A delivered receipt can still hide downstream spam filtering. SMSProbe confirms whether the message appeared on the real device inbox, not just that the carrier accepted it.
Before
Network says delivered, but the device never gets it
Example: your e-sign reminder is handed off successfully, then blocked by spam filtering before it reaches the inbox.
Expected
Sender: ESIGN
Body: "Sign now: esign.example/s/9914"
Target: Customer handset inbox
Received
DLR status: DELIVERED
Device inbox: No message received
Carrier spam filter suppressed delivery
After
SMSProbe confirms suppression, not just handoff
You see which networks report delivered but fail to show a received message on real SIM hardware, so you can adjust content or routing before impact.
EERECEIVED4.6s
VodafoneRECEIVED5.3s
O2NOT RECEIVEDDLR only
ThreeRECEIVED5.0s