diff --git a/app/dashboard/templates/dashboard/custom_alias.html b/app/dashboard/templates/dashboard/custom_alias.html
index 4a439b85..414d4cf2 100644
--- a/app/dashboard/templates/dashboard/custom_alias.html
+++ b/app/dashboard/templates/dashboard/custom_alias.html
@@ -9,25 +9,25 @@
 {% block default_content %}
 
   <div class="col-md-6 offset-md-3">
+    <h1 class="h3 mb-5">Custom Alias</h1>
     {% if error %}
       <div class="text-danger text-center mb-4">{{ error }}</div>
     {% endif %}
 
-    <form method="post" enctype="multipart/form-data">
-      {{ form.csrf_token }}
+    <form method="post">
+      <input type="hidden" name="form-name" value="non-custom-domain-name">
 
       <div class="form-group">
-        <label class="form-label">Custom Alias</label>
+        <label class="form-label font-weight-bold">SimpleLogin domain</label>
         <small class="text-muted">
           You can use letter, number or dash. Alias must have at least 3 characters
         </small>
+
         <div class="row mt-4">
           <div class="col">
-            {{ form.email(class="form-control",
-                pattern="[0-9|A-Z|a-z|-]{3,}",
-                title="Only letter, number or dash can be used and alias must have at least 3 characters.",
-                autofocus=True) }}
-            {{ render_field_errors(form.email) }}
+            <input name="email-prefix" class="form-control" pattern="[0-9|A-Z|a-z|-]{3,}" ,
+                   title="Only letter, number or dash can be used and alias must have at least 3 characters." ,
+                   autofocus>
           </div>
           <div class="col align-self-center">
             <input type="hidden" name="email-suffix" value="{{ email_suffix }}">
@@ -40,6 +40,33 @@
 
       <button class="btn btn-primary">Create</button>
     </form>
+
+    {% if custom_domains %}
+      <hr>
+      <p class="font-weight-bold">OR with your custom domains</p>
+      {% for custom_domain in custom_domains %}
+        <form method="post" class="mb-6">
+          <input type="hidden" name="form-name" value="custom-domain-name">
+          <input type="hidden" name="custom-domain-id" value="{{ custom_domain.id }}">
+
+          <div class="row mt-4">
+            <div class="col">
+              <input name="email" class="form-control">
+            </div>
+            <div class="col align-self-center">
+              <input type="hidden" name="email-suffix" value="{{ email_suffix }}">
+              <h4>
+                @{{ custom_domain.domain }}
+              </h4>
+            </div>
+            <div class="col">
+              <button class="submit btn btn-sm btn-success">Create</button>
+            </div>
+          </div>
+
+        </form>
+      {% endfor %}
+    {% endif %}
   </div>
 
 {% endblock %}
diff --git a/app/dashboard/views/custom_alias.py b/app/dashboard/views/custom_alias.py
index e06ce105..56f6a14f 100644
--- a/app/dashboard/views/custom_alias.py
+++ b/app/dashboard/views/custom_alias.py
@@ -1,20 +1,14 @@
 from flask import render_template, redirect, url_for, flash, request, session
 from flask_login import login_required, current_user
-from flask_wtf import FlaskForm
-from wtforms import StringField, validators
 
 from app.config import EMAIL_DOMAIN, HIGHLIGHT_GEN_EMAIL_ID
 from app.dashboard.base import dashboard_bp
 from app.extensions import db
 from app.log import LOG
-from app.models import GenEmail, DeletedAlias
+from app.models import GenEmail, DeletedAlias, CustomDomain
 from app.utils import convert_to_id, random_string
 
 
-class CustomAliasForm(FlaskForm):
-    email = StringField("Email", validators=[validators.DataRequired()])
-
-
 @dashboard_bp.route("/custom_alias", methods=["GET", "POST"])
 @login_required
 def custom_alias():
@@ -25,41 +19,81 @@ def custom_alias():
         flash("ony premium user can choose custom alias", "warning")
         return redirect(url_for("dashboard.index"))
 
-    form = CustomAliasForm()
     error = ""
 
-    if form.validate_on_submit():
-        email = form.email.data
-        email = convert_to_id(email)
-        email_suffix = request.form.get("email-suffix")
+    if request.method == "POST":
+        if request.form.get("form-name") == "non-custom-domain-name":
+            email_prefix = request.form.get("email-prefix")
+            email_prefix = convert_to_id(email_prefix)
+            email_suffix = request.form.get("email-suffix")
 
-        if len(email) < 3:
-            error = "email must be at least 3 letters"
-        else:
-            full_email = f"{email}.{email_suffix}@{EMAIL_DOMAIN}"
-            # check if email already exists
-            if GenEmail.get_by(email=full_email) or DeletedAlias.get_by(
-                email=full_email
-            ):
-                error = "email already chosen, please choose another one"
+            if len(email_prefix) < 3:
+                error = "email must be at least 3 letters"
             else:
-                # create the new alias
-                LOG.d("create custom alias %s for user %s", full_email, current_user)
+                full_email = f"{email_prefix}.{email_suffix}@{EMAIL_DOMAIN}"
+                # check if email already exists
+                if GenEmail.get_by(email=full_email) or DeletedAlias.get_by(
+                    email=full_email
+                ):
+                    error = "email already chosen, please choose another one"
+                else:
+                    # create the new alias
+                    LOG.d(
+                        "create custom alias %s for user %s", full_email, current_user
+                    )
+                    gen_email = GenEmail.create(
+                        email=full_email, user_id=current_user.id, custom=True
+                    )
+                    db.session.commit()
+
+                    flash(f"Alias {full_email} has been created", "success")
+                    session[HIGHLIGHT_GEN_EMAIL_ID] = gen_email.id
+
+                    return redirect(url_for("dashboard.index"))
+        elif request.form.get("form-name") == "custom-domain-name":
+            custom_domain_id = request.form.get("custom-domain-id")
+            email = request.form.get("email")
+
+            custom_domain = CustomDomain.get(custom_domain_id)
+
+            if not custom_domain:
+                flash("Unknown error. Refresh the page", "warning")
+                return redirect(url_for("dashboard.custom_alias"))
+            elif custom_domain.user_id != current_user.id:
+                flash("Unknown error. Refresh the page", "warning")
+                return redirect(url_for("dashboard.custom_alias"))
+            elif not custom_domain.verified:
+                flash("Unknown error. Refresh the page", "warning")
+                return redirect(url_for("dashboard.custom_alias"))
+
+            full_email = f"{email}@{custom_domain.domain}"
+
+            if GenEmail.get_by(email=full_email):
+                error = f"{full_email} already exist, please choose another one"
+            else:
+                LOG.d(
+                    "create custom alias %s for custom domain %s",
+                    full_email,
+                    custom_domain.domain,
+                )
+                # todo: add custom_id to GenEmail
                 gen_email = GenEmail.create(
-                    email=full_email, user_id=current_user.id, custom=True
+                    email=full_email,
+                    user_id=current_user.id,
+                    custom=True,
+                    custom_domain_id=custom_domain.id,
                 )
                 db.session.commit()
+                flash(f"Alias {full_email} has been created", "success")
 
-                flash(f"Email alias {full_email} has been created", "success")
                 session[HIGHLIGHT_GEN_EMAIL_ID] = gen_email.id
-
                 return redirect(url_for("dashboard.index"))
 
     email_suffix = random_string(6)
     return render_template(
         "dashboard/custom_alias.html",
-        form=form,
         error=error,
         email_suffix=email_suffix,
         EMAIL_DOMAIN=EMAIL_DOMAIN,
+        custom_domains=current_user.verified_custom_domains(),
     )