Bulk SMS is basically a platform where you can send thousands of messages simultaneously to targeted mobile numbers with a simple click through different bulk SMS gateways.
English text : single text messages are limited to 160 characters,
including spaces.
Each concatenated text message is limited to 153 characters, rather
than 160 due to the need for user-data headers (UDH) information. Mobile
phones use UDH information to enable them to link long messages together
so they appear as single SMS messages in recipients' phones.
| Number of SMS parts/count | Total number of characters in the linked message |
|---|---|
| 1 | 160 |
| 2 | 306 |
| 3 | 459 |
| 4 | 612 |
| 5 | 765 |
| 6 | 918 |
Unicode (Multilingual): 70 character - 1 sms count, including
spaces.
Long sms: 67 (including
spaces)
| Number of SMS parts/count | Total number of characters in the linked message |
|---|---|
| 1 | 70 |
| 2 | 134 |
| 3 | 201 |
| 4 | 268 |
| 5 | 335 |
| 6 | 402 |
In order to pass parameters in URL-s, you have to replace certain characters to keep the syntax. This is called URL escaping or URL encoding.
| Character | Encoding as |
|---|---|
| & | %26 |
| # | %23 |
| % | %25 |
| ! | %21 |
| " | %21 |
| ' | %27 |
| * | %2A |
| + | %2B |
| / | %2F |
| : | %3A |
| < | %3C |
| > | %3E |
| = | %3D |
| ? | %3F |
| , (Coma) | %2C |
| Space | + |
| New line | %0a |