Is it permissible to play a part in establishing a venue for condolence gatherings and other occasions?

Ruling on text messages on special occasions

They choose a day on which to speak about the Prophet (blessings and peace of Allah be upon him) in the mosque and they call it a Mawlid

Giving the reward for acts of worship to the Prophet (peace and blessings of Allaah be upon him)

He gave charity on the basis that by doing so all his sins would be forgiven