Why letter writing was once a core campaign tactic
Launch library · evergreen read

Before digital communication, writing directly to an official or a newspaper was one of the more accessible ways an individual could register concern about an issue, and campaigns often organised coordinated letter writing to demonstrate the depth of public feeling. Coordinating that effort took real organisation behind the scenes.
A letter took real effort to write and send, which meant that a large volume of them landing at once carried genuine weight, signalling to a decision maker that an issue mattered enough to people that they were willing to act individually rather than simply agree passively. That effort was itself part of the message.
Though the format has largely moved online, the underlying principle behind organised letter writing, that a decision maker takes more notice of effortful, individual expressions of concern than passive agreement, still shapes how many campaigns design their calls to action today. The channel changed, but the logic behind it endured.