There are four different options to choose from when creating a product, to request a mandate from your customers. Each of these mandate types represent a different way of issuing the mandate.
When choosing the mandate type 'Email', the customer will issue the mandate after signing up (or after you manually assigned the subscription to their profile). Immediately after registration, they will receive an email to confirm their registration by issuing their mandate. In this email, there's a link redirecting them to a webpage. This page has the following info:
Once they click the 'I agree' button on this page, the mandate has been issued and the subscription will get the active status, meaning transactions will be scheduled for it.
When 'email' is the mandate type for a product, the connected signup form will always require the customer to enter their payment details. Without those details, no payments can be done. This is why it's very important to manually enter those payment details when manually assigning a subscription to a customer. Otherwise, the transactions for this customer will fail.
Text message mandate
When choosing the text message mandate type, the flow is very much the same as the email mandate, except they will receive a text message with a link to the webpage, instead of an email.
Online payment (€0,01)
A big difference from this mandate type and the email&text message type, is that issuing the mandate will happen immediately upon registration. Once they've entered their personal details, they are redirected to the payment page right away. Here, they will perform a 1 cent verification payment, which will result in their payment details being saved on their customer profile for all future payments. This means, on the signup form itself, they won't need to enter their payment details.
A huge advantage to using this mandate type (on top of the easier onboarding) is the confirmation of their payment details. When they manually enter it, a simple typing mistake can result in a failed payment. However, when they perform the payment, the payment details are immediately verified for future use.
Online payment (first term)
The final option works in the same way as the other Online Payment mandate type works, except for that instead of doing a 1 cent verification payment, they immediately pay the first term of the subscription. This means they pay the first instance of the first payment rule, whether that means the actual first subscription fee or maybe administration costs (or both!).
Out of all possible mandate types, this type can be most strongly recommended. The onboarding is quick and easy (just 2 steps to complete the registration and the customer never needs to switch screens), the payment details are verified and on top of that, the first costs of the subscription are immediately paid.