i did everything. i cant take activation email. what is wrong ?
Try to send email with for example PHP using those same details. Possible problems can be, SMTP is not activated for that API key, port 587 is blocked, etc
Yes u are right Problem is sparkpost API…
Leaving the field blank will allow access by valid API keys from any IP address.
UPDATE API KEY
i uptade ip section. after this i found solution. thank you.