SMS rules for Bulgaria
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Sender ID restrictions
| Alphanumeric sender ID | Can be overwritten |
|---|---|
| Foreign numeric sender ID | Can be overwritten |
| Local numeric sender ID | Supported |
| Generic sender ID prohibited | Yes, you can |
| Sender ID can be changed | Yes, you can |
| Virtual number required | Yes, you can |
| Marketing requires opt-in | Yes, you can |
| P2P prohibited | Yes, you can |
| Handset DLR unavailable | No, you can't. |
Content restrictions
| Category | Status | Notes |
|---|---|---|
| Gambling / Games | PROHIBITED | Detected from provider text: gambling, betting, casino |
| Political content | PROHIBITED | Detected from provider text: political |
| Religious content | PROHIBITED | Detected from provider text: religious |
| Marketing / Advertising | PROHIBITED | Detected from provider text: marketing, promotion |
Notes
Country: Bulgaria (BG).
To ensure proper delivery of SMS messages to Bulgaria, there are specific guidelines to follow. Sender IDs must be alphanumeric and there are different requirements depending on the mobile operator. For Mobiltel, sender IDs will be changed to ensure delivery. BTC may change Sender IDs to some form of short code or generic alphanumeric sender, while Telenor will also modify Sender IDs to ensure messages are delivered. It is important to note that numeric sender IDs are not supported unless they are offered as part of a two-way service. Generic sender IDs such as INFO, SMS, NOTICE etc. are not allowed; it is recommended to use a representative brand or company name to ensure delivery.
When it comes to usage and content, it is necessary to obtain consent from recipients before sending marketing messages. P2P traffic is not allowed and no political, religious, unsolicited promotional or gambling-related content may be sent. There are no additional content restrictions beyond those stated in our Acceptable Use Policy.
We recommend staying updated on the specific rules for text messaging in Bulgaria as these may change. We strive to ensure that all information is accurate and up to date.
To ensure proper delivery of SMS messages to Bulgaria, there are specific guidelines to follow. Sender IDs must be alphanumeric and there are different requirements depending on the mobile operator. For Mobiltel, sender IDs will be changed to ensure delivery. BTC may change Sender IDs to some form of short code or generic alphanumeric sender, while Telenor will also modify Sender IDs to ensure messages are delivered. It is important to note that numeric sender IDs are not supported unless they are offered as part of a two-way service. Generic sender IDs such as INFO, SMS, NOTICE etc. are not allowed; it is recommended to use a representative brand or company name to ensure delivery.
When it comes to usage and content, it is necessary to obtain consent from recipients before sending marketing messages. P2P traffic is not allowed and no political, religious, unsolicited promotional or gambling-related content may be sent. There are no additional content restrictions beyond those stated in our Acceptable Use Policy.
We recommend staying updated on the specific rules for text messaging in Bulgaria as these may change. We strive to ensure that all information is accurate and up to date.
Last updated: April 20, 2026