 <translate> April has thirty days, so half will be 30 / 2 = 15. For the first 15 days, he received 20 * 15 = 300 emails. For the remaining 15 days, the number of emails increased to 20 + 5 = 25 emails. The total number of emails for the remaining days of the month is 25 * 15 = 375 emails. The total number of emails for April is 375 + 300 = 675 emails.
Thus, the answer is 675. <yor> Oṣù April ní ọgbọ̀n ọjọ́, nítorí náà ìdajì yóò jẹ́ 30 / 2 = 15. Láàárín ọjọ́ mẹ́ẹ̀ẹ́dógún àkọ́kọ́, ó gba ìsọfúnni lórí íńtánẹ́ẹ̀tì tó tó ọ̀ọ́dúnrún [300]. Láàárín ọjọ́ mẹ́ẹ̀ẹ́dógún tó kù, iye àwọn lẹ́tà tí wọ́n fi ránṣẹ́ pọ̀ sí 20 + 5 = 25. Apapọ iye imeeli fun awọn ọjọ to ku ninu oṣu jẹ 25 * 15 = imeeli 375. Àpapọ̀ iye imeeli fún oṣù April jẹ 375 + 300 = 675 imeeli. Nítorí náà, ìdáhùn náà ni 675. 