Messente has a few extra Tools and API's to get you started
Autoreplace - Automatically replace any non-GSM characters to save on messaging costs
Pricing API - Get the full pricelist or prices for just one
Account balance API - Check your current Account Balance in Messente
Libraries - Ready-made libraries to get you up and running in no time
Error codes - Full list of all error codes
SMS length calculator - Calculate your SMS length and check which characters are not present in GSM alphabet.