Solved Proper plugin.yml configuration

I think something is wrong with my yaml.
Whatever command I name email will not run, rather it'll return the /email<recipient>
I tested to make sure this was not a problem in my code by switching the names of the commands /mail and /email.
Before I did this, email would not run, after, mail would not run.

What am I doing wrong in my plugin.yml?

Code:

main: ygm.mail
name: mail
version: 0.4
api-version: 1.15
author: k3rsh0k
description: ygm is a plugin that allows you to send mail to other players.
commands:
  mail:
    description: Allows you to use the mail service.
    usage: /mail<recipiant>
  email:
    description: Allows you to use the email service.
    usage: /email<recipiant>

My code:

Code:

package ygm;
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.PlayerInventory;

public class mail_exec implements CommandExecutor {
    private final mail plugin;

    public mail_exec(mail plugin) {
        this.plugin = plugin;
    }

    @SuppressWarnings("deprecation")
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (cmd.getName().equalsIgnoreCase("email")) {
            if(args[0].equalsIgnoreCase("help")) {
                sender.sendMessage("~~~~~~~~~~~ MAIL HELP ~~~~~~~~~~~");
                sender.sendMessage("");
                sender.sendMessage("To send mail, use the command: /mail <player>");
                sender.sendMessage("Mail takes time to send, the eq used to calculate send time is:");
                sender.sendMessage("`distanceBetweenPlayers / 11.6`: 11.6 bps is twice is fast as you can run in minecraft.");
                sender.sendMessage("The item(s) to be sent is whatever is in your hand when you run the command.");
                sender.sendMessage("");
            }else{
            if (!(sender instanceof Player)) {
                sender.sendMessage("This command can only be run by a player.");
            } else {
                Player player = (Player) sender;
                if (args.length > 1) {
                    sender.sendMessage("Too many arguments!");
                    return false;
                }
                if (args.length < 1) {
                    sender.sendMessage("You need to specify a recipient.");
                    return false;
                }

                Player target = (Bukkit.getServer().getPlayer(args[0]));
                if (target == null) {
                    sender.sendMessage(args[0] + " is not online!");
                    return false;
                }

                if(player.getItemInHand().getType() != Material.AIR){
                    float distance = (float) player.getLocation().distance(target.getLocation());
                    PlayerInventory inventory = target.getInventory();
                    PlayerInventory reminventory = player.getInventory();
                    ItemStack itemstack = player.getItemInHand();
                    reminventory.remove(itemstack);
                    float delaytime = (float) (distance / 11.6);
                    int a = Math.round(delaytime);
                    sender.sendMessage("Sending item: "+distance+" blocks over "+ (a / 60) +" minutes!");
                    plugin.getServer().getScheduler().scheduleSyncDelayedTask(plugin, newRunnable() {
                        @Override
                        public void run() {
                            inventory.addItem(itemstack);
                            target.sendMessage("You recived "+itemstack.toString()+" from "+sender.getName()+".");
                            sender.sendMessage("Thank you for using the mail system: "+target.getDisplayName()+" recived your "+ itemstack.toString() +"");
                        }
                    }, (int) (20*a));
                    returntrue;
                }else{
                    sender.sendMessage("YOU CANNOT SEND AIR.");
                    returnfalse;
                }
            }
            returntrue;
            }
        }else if (cmd.getName().equalsIgnoreCase("mail")) {
            if(args[0].equalsIgnoreCase("help")) {
                sender.sendMessage("~~~~~~~~~~~ EMAIL HELP ~~~~~~~~~~~");
                sender.sendMessage("");
                sender.sendMessage("To send mail, use the command: /email <player>");
                sender.sendMessage("Mail takes time to send, the eq used to calculate send time is:");
                sender.sendMessage("`distanceBetweenPlayers / 11.6`: 11.6 bps is twice is fast as you can run in minecraft.");
                sender.sendMessage("The item(s) to be sent is whatever is in your hand when you run the command.");
                sender.sendMessage("");
            }else{
            if (!(sender instanceof Player)) {
                sender.sendMessage("This command can only be run by a player.");
            } else {
                Player player = (Player) sender;
                if (args.length > 1) {
                    sender.sendMessage("Too many arguments!");
                    returnfalse;
                }
                if (args.length < 1) {
                    sender.sendMessage("You need to specify a recipient.");
                    return false;
                }
                Player target = (Bukkit.getServer().getPlayer(args[0]));
                if (target == null) {
                    sender.sendMessage(args[0] + " is not online!");
                    return false;
                }
                if(player.getItemInHand().getType() != Material.AIR){
                    PlayerInventoryinventory = target.getInventory();
                    PlayerInventoryreminventory = player.getInventory();
                    reminventory.remove(Material.IRON_BARS);
                    sender.sendMessage("Thank you for using the email system, you item will send momentairly...");
                    ItemStackitemstack = player.getItemInHand();
                    reminventory.remove(itemstack);
                    inventory.addItem(itemstack);
                    target.sendMessage("You recived "+itemstack.toString()+" from "+sender.getName()+".");
                    sender.sendMessage("Thank you for using the email system: "+target.getDisplayName()+" recived your "+ itemstack.toString() +"");
                    return true;
                }else{
                    sender.sendMessage("YOU CANNOT SEND AIR.");
                    return false;
                }
            }
            return true;
            }
        return false;
        }
        sender.sendMessage("Unknown command.");
        return false;
    }
}

Code:

package ygm;

import org.bukkit.plugin.java.JavaPlugin;

publicfinalclassmailextendsJavaPlugin {

    @Override

    publicvoidonEnable() {

        getLogger().info("[i] ygm has been enabled!");

        this.getCommand("mail").setExecutor(newmail_exec(this));

    }    

}

(sorry for all the missing spaces, i do not know why they are not there :/)

 

I've added my code.

 

Alright, thank you.