Sending SMS via SMPP
Connect to 6X wholesale SMS using SMPP credentials and check delivery status.
Sending SMS via SMPP
6X wholesale SMS uses standard SMPP (Short Message Peer-to-Peer) connectivity, provisioned per account with dedicated bind credentials.
Connection details
Your SMPP host, port, system ID (username), and password are issued when your SMS service is activated. These are account-specific - contact support if you need them reissued.
Steps
- Confirm your wholesale account has SMS enabled (visible in your dashboard).
- Bind to your assigned SMPP endpoint using your issued credentials in transceiver mode.
- Submit a test message to a real destination number.
- Check SMS CDRs in your dashboard to confirm the message was logged, priced, and its delivery status.
Concurrent connections & throughput
Two separate limits apply to your SMPP account, both visible on your account page:
- Max SMS Concurrent Connections - how many SMPP sessions you can have bound at once.
- Max SMS Throughput - how many messages per second you can submit (defaults to 50/sec if not set).
If you submit faster than your throughput limit, Jasmin rejects the excess with a "throughput exceeded" response rather than queuing it silently - back off briefly and resend. This only applies to direct SMPP connections; the standard HTTPS API has no throughput cap. To raise either limit, contact support.
Sender IDs
The source address (sender ID) on your messages may be subject to your account's sender ID policy. If your account is set to strict, messages submitted with a sender ID that has not been approved on your account are rejected before delivery. Request approval for your sender names from the Sender IDs page in your dashboard - see the SMS Sender IDs article for details.
Delivery status
Message status moves through Sent (submitted successfully) to Delivered (confirmed by the destination carrier) or Failed/Rejected/Expired. Delivery confirmation (DLR) is asynchronous and may take a few seconds to a few minutes depending on the destination network - a message showing "Sent" is not necessarily undelivered, it may simply be awaiting confirmation.