Fix email settings loading:

MAIL_URL was overriden with database info all the time.
Now if MAIL_URL exists is not overwritten and if neither MAIL_URL nor
exists valid admin panel data MAIL_URL is not set.
MAIL_FROM was ignored. Same behaviour, env variable has bigger priority
than database configuration.
On both cases, althrought environment variable is set, updating admin-panel
mail settings will load new info and ignore the environment variable.
Remove some code that is not needed anymore

config/accounts.js

@@ -16,17 +16,12 @@ AccountsTemplates.addFields([{
   template: 'invitationCode',
 }]);
 
-let sendVerificationEmail = false;
-if (process.env.MAIL_URL) {
-  sendVerificationEmail = true;
-}
-
 AccountsTemplates.configure({
   defaultLayout: 'userFormsLayout',
   defaultContentRegion: 'content',
   confirmPassword: false,
   enablePasswordChange: true,
-  sendVerificationEmail,
+  sendVerificationEmail: true,
   showForgotPasswordLink: true,
   onLogoutHook() {
     const homePage = 'home';

models/settings.js

@@ -27,7 +27,6 @@ Settings.attachSchema(new SimpleSchema({
   'mailServer.from': {
     type: String,
     optional: true,
-    defaultValue: 'Wekan',
   },
   createdAt: {
     type: Date,
@@ -66,14 +65,17 @@ if (Meteor.isServer) {
     const setting = Settings.findOne({});
     if(!setting){
       const now = new Date();
+      const domain = process.env.ROOT_URL.match(/\/\/(?:www\.)?(.*)?(?:\/)?/)[1];
+      const from = `Wekan <wekan@${domain}>`;
       const defaultSetting = {disableRegistration: false, mailServer: {
-        username: '', password: '', host: '', port: '', enableTLS: false, from: '',
+        username: '', password: '', host: '', port: '', enableTLS: false, from,
       }, createdAt: now, modifiedAt: now};
       Settings.insert(defaultSetting);
     }
     const newSetting = Settings.findOne();
+    if (!process.env.MAIL_URL && newSetting.mailUrl())
       process.env.MAIL_URL = newSetting.mailUrl();
-    Accounts.emailTemplates.from = newSetting.mailServer.from;
+    Accounts.emailTemplates.from = process.env.MAIL_FROM ? process.env.MAIL_FROM : newSetting.mailServer.from;
   });
   Settings.after.update((userId, doc, fieldNames) => {
     // assign new values to mail-from & MAIL_URL in environment
@@ -106,14 +108,12 @@ if (Meteor.isServer) {
         url: FlowRouter.url('sign-up'),
       };
       const lang = author.getLanguage();
-      if (Settings.findOne().mailUrl()) {
       Email.send({
         to: icode.email,
         from: Accounts.emailTemplates.from,
         subject: TAPi18n.__('email-invite-register-subject', params, lang),
         text: TAPi18n.__('email-invite-register-text', params, lang),
       });
-      }
     } catch (e) {
       InvitationCodes.remove(_id);
       throw new Meteor.Error('email-fail', e.message);

models/users.js

@@ -383,7 +383,6 @@ if (Meteor.isServer) {
       board.addMember(user._id);
       user.addInvite(boardId);
 
-      if (Settings.findOne().mailUrl()) {
       try {
         const params = {
           user: user.username,
@@ -401,7 +400,6 @@ if (Meteor.isServer) {
       } catch (e) {
         throw new Meteor.Error('email-fail', e.message);
       }
-      }
       return { username: user.username, email: user.emails[0].address };
     },
   });

server/notifications/email.js

@@ -26,7 +26,6 @@ Meteor.startup(() => {
       const text = texts.join('\n\n');
       user.clearEmailBuffer();
 
-      if (Settings.findOne().mailUrl()) {
       try {
         Email.send({
           to: user.emails[0].address.toLowerCase(),
@@ -37,7 +36,6 @@ Meteor.startup(() => {
       } catch (e) {
         return;
       }
-      }
     }, 30000);
   });
 });