addIncomingServer method
Implementation
void addIncomingServer(ServerConfig server) {
incomingServers ??= <ServerConfig>[];
incomingServers!.add(server);
preferredIncomingServer ??= server;
if (server.type == ServerType.imap && preferredIncomingImapServer == null) {
preferredIncomingImapServer = server;
}
if (server.type == ServerType.pop && preferredIncomingPopServer == null) {
preferredIncomingPopServer = server;
}
}