The phrase "actually he sent" is correct and usable in written English.
It can be used to clarify or correct a previous statement regarding who sent something.
Example: "I thought she was the one who sent the email, but actually he sent it."
Alternatives: "in fact he sent" or "as a matter of fact he sent".
Two of their most recent tweets are actually emails he sent to his employees about facility operations – a great way to keep customers informed about what's going on behind the scenes.
Actually, he was sent to Syria.
Federal and state investigations determined the worker believed the U.S. was actually under attack when he sent the alert.
He said his dismissal was "somewhat of a surprise," especially since "President Trump and I actually spoke the day that he sent the tweet out, just a few hours before".
He denied this, saying he actually sent accused priests to a well-respected psychiatric institution for evaluation.
Actually he's just sent the picture and, whoever they are (I have a no idea), a more mardy bunch of buggers I haven't seen outside this office in years.
The messages he actually sent the younger teen, spruced with French song lyrics and writing that sounded like he was reading a little too much Milton, eventually convinced her to meet him on the roof of a campus building, and then to the mechanical room, where he had sex with her.
Well, he actually sent someone down who said, 'Elton John would like to apologise for the comment that he made, he'd like you to go up to his room,' and Myleene Klass, I think it was, said, 'No, tell him to come here,' and he did.
In Turkey, Sultan Bayezid II not only welcomed these refugees, he actually sent a fleet to rescue them.
The evidence at trial strongly suggested Dayton overstated the number of e-mail messages he actually sent out in this test mailing.
