The phrase "sending once again" is grammatically correct and can be used in written English.
It is often used to indicate that the speaker is repeating something they have previously said, or when they are sending a message or item for a second time. For example, "I'm sending once again the report I sent yesterday just to make sure you received it."
This time, officials said, city workers were sent once again to Staten Island's evacuation zones to issue warnings, some using loudspeakers.
"When access is granted, all of your contact's emails are sent, once again in plain text, to QuizUp's servers.
Instead of showing gratitude for the generosity of the Party and its Leader, who had forgiven his past transgressions and had sent him once again to a linguistics congress abroad, he had repeated his former error and had again kissed the hand of that female delegate from a hostile country.
All nodes would take measures for congestion and the network will become under-utilized firstly and flooded afterwards when all nodes are increasing their send rate once again.
Hisham accepted the recommendations, and instructed Khalid al-Qasri to send Asad once again as governor to Khurasan.
A reminder will be sent ten days after sending, which will once again include the questionnaire and a note of thanks.
This possibility of widespread fragility among American companies may yet send markets down once again.
(The situation, really, is very like that at the end of "The Little Prince," where the snake, like Judas, has to be persuaded to bite the celestial visitor in order to send him back, once again, to his star. And the last image of that book, too, is the single lonely personal star).
Since the use of chemical weapons constitutes a solid breach of international law, their use is also a convenient excuse for the West to get the jets out and send them east once again.
The final option dictates whether Elance will send you surveys; once again, it is a check box that can be turned off by clicking the box.
Two weeks later she started once again sending me requests to play Candy Crush.
