diff --git a/src/Symfony/Component/Mailer/Bridge/Sendinblue/Transport/SendinblueApiTransport.php b/src/Symfony/Component/Mailer/Bridge/Sendinblue/Transport/SendinblueApiTransport.php
index eca54c2fd660d..0a43deb97f65d 100644
--- a/src/Symfony/Component/Mailer/Bridge/Sendinblue/Transport/SendinblueApiTransport.php
+++ b/src/Symfony/Component/Mailer/Bridge/Sendinblue/Transport/SendinblueApiTransport.php
@@ -136,7 +136,7 @@ private function prepareAttachments(Email $email): array
private function prepareHeadersAndTags(Headers $headers): array
{
$headersAndTags = [];
- $headersToBypass = ['from', 'to', 'cc', 'bcc', 'subject', 'reply-to', 'content-type', 'accept', 'api-key'];
+ $headersToBypass = ['from', 'sender', 'to', 'cc', 'bcc', 'subject', 'reply-to', 'content-type', 'accept', 'api-key'];
foreach ($headers->all() as $name => $header) {
if (\in_array($name, $headersToBypass, true)) {
continue;
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