Check whether your messages are still in the 'Drafts' folder. If so, open them and click 'Send'.
Check if the email address used exists or does not contain any typos. - If the email address is correct, go to (3) - If the email address is incorrect, please make all necessary adjustments and try resending the email.
Check if the SPF-records for your email address are correctly configured in iController on spf.icontroller.eu. - If this is not the case, please contact your IT department or external IT partner to set up these SPF records. - If the SPF-records are configured correctly and checked on spf.icontroller.eu, please contact firstname.lastname@example.org.