Frequency is a powerful strategy.
“When nothing seems to help, I go and look at a stone cutter hammering away at his rock, perhaps a hundred times without as much as a crack showing in it. Yet at the hundred and first blow it will split in two, and I know it was not that last blow that did it—but all that had gone before” (from James Clear in Atomic Habits).
The next message you write and send may be the final swing of the hammer.
Keep swinging.