-e (custom endpoint flag) not working, doesn't seem to show up on the API

(output of -h)

Help
Mandatory on every command: -k flag followed by filename containing credentials OR from AWS_CREDENTIALS_FILE env variable
Optional on every command: --verbose flag for XML output if the command has one
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ses-verify-email-address.pl -l - List of verified e-mail addresses
ses-verify-email-address.pl -v EMAIL_ADDRESS - send verification request to e-mail address - NO OUTPUT
ses-verify-email-address.pl -d EMAIL_ADDRESS - delete e-mail address - NO OUTPUT
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ses-get-stats.pl -q - Send Quota information
ses-get-stats.pl -s - Send Statistics information
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ses-send-email.pl -s SUBJECT -f SENDER_EMAIL "RECEIVER_EMAIL1,RECEIVER_EMAIL2,..." [-b "BCC_EMAIL1, BCC_EMAIL2..."] [-c "CC_EMAIL1, CC_EMAIL2..."] BODY_FILE - send e-mail - NO OUTPUT
ses-send-email.pl -r RAW_MESSAGE_FILE - send e-mail using raw message - NO OUTPUT