Service Provider Specific Notes
The following tables are available as a quick reference, but consult the documentation (linked below) of the individual service provider for the most up to date information on supported operations and if there are additional requirements or limitations to consider.
| Twilio (SMS API) | Outgoing | Incoming |
| Sending | Yes | - |
| Scheduling | Yes | - |
| Deleting | Yes* | Yes* |
| Updating | Yes | - |
| Listing | Yes* | Yes* |
| Fetching | Yes* | Yes* |
| Sinch (SMS API) | Outgoing | Incoming |
| Sending | Yes | - |
| Scheduling | Yes | - |
| Deleting | Yes | No |
| Updating | Yes | - |
| Listing | Yes | Yes |
| Fetching | Yes | Yes |
| SMSGlobal (REST API) | Outgoing | Incoming |
| Sending | Yes | - |
| Scheduling | Yes | - |
| Deleting | Yes | Yes |
| Updating | No | - |
| Listing | Yes | Yes |
| Fetching | Yes | Yes |
| SMS.to (SMS API) | Outgoing | Incoming |
| Sending | Yes | - |
| Scheduling | Yes | - |
| Deleting | No | No |
| Updating | No | - |
| Listing | Yes | Yes |
| Fetching | Yes | No |
| Vonage (SMS API) | Outgoing | Incoming |
| Sending | Yes | - |
| Scheduling | No | - |
| Deleting | No | No |
| Updating | No | - |
| Listing | No | No |
| Fetching | No | No |
| Clickatell (One API) | Outgoing | Incoming |
| Sending | Yes | - |
| Scheduling | Yes | - |
| Deleting | No | No |
| Updating | No | - |
| Listing | No | No |
| Fetching | No | No |
* There is no distinction between calling send and receive variants of operations due to the fact that this service does not have separate endpoints for the two.