Yes. To use this feature please contact Support with details of the numbers you want to use and you will be provided with instructions. Generally this is used when sending via Premium Billed Short Codes rather than the Bulletin default threading range of numbers.

Yes. Some networks do allow you to set a word or string of words as the number recipients see as the sender of an SMS. This is done by setting the from part of the message payload To use this feature please contact Sales with details of the strings you want to use.

Source headers can be any alphanumeric with the following restrictions: + No more than 11 characters in total + Use only alphanumeric characters (eg: a-z or A-Z, or 0-9) + No symbols or spaces.