You are at liberty to purchase the amount of SMS credits you require. Credits are available in bundles varying in size and amount:
Further details here: https://inforumobile.ie/pricing/.
Once bought the credits are at your disposal for an unlimited amount of time. When exhausted you are free to top up your account by buying an additional stock as per your needs.
There are no subscription fees / fixed / reoccurring charges involved.
One SMS Credit allows you to send a text of up to 160 regular characters to a single recipient. Detailing on message length is available here:
Along with the SMS bundle you receive full access to the Landing page builder, Registration Form creator and Survey tools available on the platform, non-limited and free of charge.