diff --git a/src/App.tsx b/src/App.tsx
index bf9fb78..52b8cd1 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -58,6 +58,7 @@ const router = createBrowserRouter([
 				element: <AuthenticatedRoute />,
 				children: [
 					{
+						loader: getServerSettings,
 						path: "/aliases",
 						element: <AliasesRoute />,
 					},
diff --git a/src/constants/values.ts b/src/constants/values.ts
index 83df337..c78bd5c 100644
--- a/src/constants/values.ts
+++ b/src/constants/values.ts
@@ -1 +1,2 @@
 export const MASTER_PASSWORD_LENGTH = 4096
+export const LOCAL_REGEX = /^[a-zA-Z0-9!#$%&‘*+–/=?^_`.{|}~-]{1,64}$/g
diff --git a/src/route-widgets/AliasRoute/AliasListItem.tsx b/src/route-widgets/AliasRoute/AliasListItem.tsx
deleted file mode 100644
index aa93279..0000000
--- a/src/route-widgets/AliasRoute/AliasListItem.tsx
+++ /dev/null
@@ -1,32 +0,0 @@
-import {ReactElement} from "react"
-import {MdOutlineMoreVert} from "react-icons/md"
-
-import {
-	IconButton,
-	ListItemButton,
-	ListItemSecondaryAction,
-	ListItemText,
-} from "@mui/material"
-
-import {AliasList} from "~/server-types"
-
-export interface AliasListItemProps {
-	alias: AliasList
-}
-
-export default function AliasListItem({
-	alias,
-}: AliasListItemProps): ReactElement {
-	const address = `${alias.local}@${alias.domain}`
-
-	return (
-		<ListItemButton href={`/aliases/${btoa(address)}`}>
-			<ListItemText primary={address} />
-			<ListItemSecondaryAction>
-				<IconButton edge="end">
-					<MdOutlineMoreVert />
-				</IconButton>
-			</ListItemSecondaryAction>
-		</ListItemButton>
-	)
-}
diff --git a/src/route-widgets/AliasesRoute/AliasListItem.tsx b/src/route-widgets/AliasesRoute/AliasListItem.tsx
new file mode 100644
index 0000000..3910e5c
--- /dev/null
+++ b/src/route-widgets/AliasesRoute/AliasListItem.tsx
@@ -0,0 +1,28 @@
+import {ReactElement} from "react"
+import {FaHashtag, FaRandom} from "react-icons/fa"
+
+import {ListItemButton, ListItemIcon, ListItemText} from "@mui/material"
+
+import {AliasList, AliasType} from "~/server-types"
+
+export interface AliasListItemProps {
+	alias: AliasList
+}
+
+const ALIAS_TYPE_ICON_MAP: Record<AliasType, ReactElement> = {
+	[AliasType.RANDOM]: <FaRandom />,
+	[AliasType.CUSTOM]: <FaHashtag />,
+}
+
+export default function AliasListItem({
+	alias,
+}: AliasListItemProps): ReactElement {
+	const address = `${alias.local}@${alias.domain}`
+
+	return (
+		<ListItemButton href={`/aliases/${btoa(address)}`}>
+			<ListItemIcon>{ALIAS_TYPE_ICON_MAP[alias.type]}</ListItemIcon>
+			<ListItemText primary={address} />
+		</ListItemButton>
+	)
+}
diff --git a/src/route-widgets/AliasRoute/CreateRandomAliasButton.tsx b/src/route-widgets/AliasesRoute/CreateAliasButton.tsx
similarity index 66%
rename from src/route-widgets/AliasRoute/CreateRandomAliasButton.tsx
rename to src/route-widgets/AliasesRoute/CreateAliasButton.tsx
index 131b33d..73f26fc 100644
--- a/src/route-widgets/AliasRoute/CreateRandomAliasButton.tsx
+++ b/src/route-widgets/AliasesRoute/CreateAliasButton.tsx
@@ -15,20 +15,25 @@ import {
 } from "@mui/material"
 import {useMutation} from "@tanstack/react-query"
 
-import {CreateAliasData, createAlias} from "~/apis"
+import {createAlias} from "~/apis"
 import {Alias, AliasType} from "~/server-types"
 
-export interface CreateRandomAliasButtonProps {
-	onCreated: (alias: Alias) => void
+export interface CreateAliasButtonProps {
+	onRandomCreated: (alias: Alias) => void
+	onCustomCreated: () => void
 }
 
-export default function CreateRandomAliasButton({
-	onCreated,
-}: CreateRandomAliasButtonProps): ReactElement {
-	const {mutate, isLoading} = useMutation<Alias, AxiosError, CreateAliasData>(
-		createAlias,
+export default function CreateAliasButton({
+	onRandomCreated,
+	onCustomCreated,
+}: CreateAliasButtonProps): ReactElement {
+	const {mutate, isLoading} = useMutation<Alias, AxiosError, void>(
+		() =>
+			createAlias({
+				type: AliasType.RANDOM,
+			}),
 		{
-			onSuccess: onCreated,
+			onSuccess: onRandomCreated,
 		},
 	)
 
@@ -41,11 +46,7 @@ export default function CreateRandomAliasButton({
 				<Button
 					disabled={isLoading}
 					startIcon={<BsArrowClockwise />}
-					onClick={() =>
-						mutate({
-							type: AliasType.RANDOM,
-						})
-					}
+					onClick={() => mutate()}
 				>
 					Create random alias
 				</Button>
@@ -62,7 +63,12 @@ export default function CreateRandomAliasButton({
 				onClose={() => setAnchorElement(null)}
 			>
 				<MenuList>
-					<MenuItem>
+					<MenuItem
+						onClick={() => {
+							setAnchorElement(null)
+							onCustomCreated()
+						}}
+					>
 						<ListItemIcon>
 							<FaPen />
 						</ListItemIcon>
diff --git a/src/route-widgets/AliasesRoute/CustomAliasDialog.tsx b/src/route-widgets/AliasesRoute/CustomAliasDialog.tsx
new file mode 100644
index 0000000..a9b23b0
--- /dev/null
+++ b/src/route-widgets/AliasesRoute/CustomAliasDialog.tsx
@@ -0,0 +1,164 @@
+import * as yup from "yup"
+import {ReactElement} from "react"
+import {useFormik} from "formik"
+import {useLoaderData} from "react-router-dom"
+import {AxiosError} from "axios"
+import {TiCancel} from "react-icons/ti"
+import {FaPen} from "react-icons/fa"
+
+import {
+	Box,
+	Button,
+	Dialog,
+	DialogActions,
+	DialogContent,
+	DialogContentText,
+	DialogTitle,
+	InputAdornment,
+	TextField,
+	Typography,
+} from "@mui/material"
+import {useMutation} from "@tanstack/react-query"
+
+import {Alias, AliasType, ServerSettings} from "~/server-types"
+import {CreateAliasData, createAlias} from "~/apis"
+import {parseFastAPIError} from "~/utils"
+import {LOCAL_REGEX} from "~/constants/values"
+import {ErrorSnack, SuccessSnack} from "~/components"
+
+export interface CustomAliasDialogProps {
+	visible: boolean
+	onCreated: () => void
+	onClose: () => void
+}
+
+interface Form {
+	local: string
+
+	detail?: string
+}
+
+export default function CustomAliasDialog({
+	visible,
+	onCreated,
+	onClose,
+}: CustomAliasDialogProps): ReactElement {
+	const serverSettings = useLoaderData() as ServerSettings
+
+	const schema = yup.object().shape({
+		local: yup
+			.string()
+			.matches(LOCAL_REGEX)
+			.required()
+			.min(1)
+			.max(64 - serverSettings.customAliasSuffixLength - 1),
+	})
+
+	const {mutateAsync, isLoading, isSuccess, reset} = useMutation<
+		Alias,
+		AxiosError,
+		Omit<CreateAliasData, "type">
+	>(
+		values =>
+			// @ts-ignore
+			createAlias({
+				type: AliasType.CUSTOM,
+				...values,
+			}),
+		{
+			onSuccess: () => {
+				reset()
+				onCreated()
+			},
+		},
+	)
+
+	const formik = useFormik<Form>({
+		validationSchema: schema,
+		initialValues: {
+			local: "",
+		},
+		onSubmit: async (values, {setErrors}) => {
+			try {
+				await mutateAsync({
+					local: values.local,
+				})
+			} catch (error) {
+				setErrors(parseFastAPIError(error as AxiosError))
+			}
+		},
+	})
+
+	return (
+		<>
+			<Dialog onClose={onClose} open={visible} keepMounted={false}>
+				<form onSubmit={formik.handleSubmit}>
+					<DialogTitle>Create Custom Alias</DialogTitle>
+					<DialogContent>
+						<DialogContentText>
+							You can define your own custom alias. Note that a
+							random suffix will be added at the end to avoid
+							duplicates.
+						</DialogContentText>
+						<Box paddingY={4}>
+							<TextField
+								key="local"
+								fullWidth
+								autoFocus
+								name="local"
+								id="local"
+								label="Address"
+								value={formik.values.local}
+								onChange={formik.handleChange}
+								disabled={formik.isSubmitting}
+								error={
+									formik.touched.local &&
+									Boolean(formik.errors.local)
+								}
+								helperText={
+									formik.touched.local && formik.errors.local
+								}
+								InputProps={{
+									endAdornment: (
+										<InputAdornment position="end">
+											<Typography variant="body2">
+												<span>
+													{Array(
+														serverSettings.customAliasSuffixLength,
+													)
+														.fill("#")
+														.join("")}
+												</span>
+												<span>
+													@{serverSettings.mailDomain}
+												</span>
+											</Typography>
+										</InputAdornment>
+									),
+								}}
+							/>
+						</Box>
+					</DialogContent>
+					<DialogActions>
+						<Button onClick={onClose} startIcon={<TiCancel />}>
+							Cancel
+						</Button>
+						<Button
+							onClick={() => {}}
+							disabled={isLoading}
+							startIcon={<FaPen />}
+							variant="contained"
+							type="submit"
+						>
+							Create Alias
+						</Button>
+					</DialogActions>
+				</form>
+			</Dialog>
+			<ErrorSnack message={formik.errors.detail} />
+			<SuccessSnack
+				message={isSuccess && "Created Alias successfully!"}
+			/>
+		</>
+	)
+}
diff --git a/src/route-widgets/LoginRoute/ConfirmCodeForm/ConfirmCodeForm.tsx b/src/route-widgets/LoginRoute/ConfirmCodeForm/ConfirmCodeForm.tsx
index 6468c0a..45e2e84 100644
--- a/src/route-widgets/LoginRoute/ConfirmCodeForm/ConfirmCodeForm.tsx
+++ b/src/route-widgets/LoginRoute/ConfirmCodeForm/ConfirmCodeForm.tsx
@@ -95,7 +95,7 @@ export default function ConfirmCodeForm({
 							fullWidth
 							name="code"
 							id="code"
-							label="code"
+							label="Code"
 							value={formik.values.code}
 							onChange={formik.handleChange}
 							disabled={formik.isSubmitting}
diff --git a/src/routes/AliasesRoute.tsx b/src/routes/AliasesRoute.tsx
index e2afce6..05c06c3 100644
--- a/src/routes/AliasesRoute.tsx
+++ b/src/routes/AliasesRoute.tsx
@@ -1,12 +1,13 @@
-import {ReactElement} from "react"
+import {ReactElement, useState} from "react"
 import {AxiosError} from "axios"
 
-import {Grid, List, Typography} from "@mui/material"
+import {List} from "@mui/material"
 import {useQuery} from "@tanstack/react-query"
 
 import {AliasList, PaginationResult} from "~/server-types"
-import AliasListItem from "~/route-widgets/AliasRoute/AliasListItem"
-import CreateRandomAliasButton from "~/route-widgets/AliasRoute/CreateRandomAliasButton"
+import AliasListItem from "~/route-widgets/AliasesRoute/AliasListItem"
+import CreateAliasButton from "~/route-widgets/AliasesRoute/CreateAliasButton"
+import CustomAliasDialog from "~/route-widgets/AliasesRoute/CustomAliasDialog"
 import QueryResult from "~/components/QueryResult"
 import SimplePage from "~/components/SimplePage"
 import getAliases from "~/apis/get-aliases"
@@ -17,34 +18,38 @@ export default function AliasesRoute(): ReactElement {
 		getAliases,
 	)
 
+	const [showCustomCreateDialog, setShowCustomCreateDialog] =
+		useState<boolean>(false)
+
 	return (
-		<SimplePage title="Aliases">
-			<Grid container spacing={4} direction="column" alignItems="stretch">
-				<Grid item>
-					<Typography variant="h6" component="h2">
-						Random Aliases
-					</Typography>
-				</Grid>
-				<Grid item>
-					<QueryResult<PaginationResult<AliasList>> query={query}>
-						{result => (
-							<List>
-								{result.items.map(alias => (
-									<AliasListItem
-										key={alias.id}
-										alias={alias}
-									/>
-								))}
-							</List>
-						)}
-					</QueryResult>
-				</Grid>
-				<Grid item>
-					<CreateRandomAliasButton
-						onCreated={() => query.refetch()}
+		<>
+			<SimplePage
+				title="Aliases"
+				actions={
+					<CreateAliasButton
+						onRandomCreated={() => query.refetch()}
+						onCustomCreated={() => setShowCustomCreateDialog(true)}
 					/>
-				</Grid>
-			</Grid>
-		</SimplePage>
+				}
+			>
+				<QueryResult<PaginationResult<AliasList>> query={query}>
+					{result => (
+						<List>
+							{result.items.map(alias => (
+								<AliasListItem key={alias.id} alias={alias} />
+							))}
+						</List>
+					)}
+				</QueryResult>
+			</SimplePage>
+			<CustomAliasDialog
+				visible={showCustomCreateDialog}
+				onCreated={() => {
+					setShowCustomCreateDialog(false)
+					query.refetch()
+				}}
+				onClose={() => setShowCustomCreateDialog(false)}
+			/>
+		</>
 	)
 }
diff --git a/src/server-types.ts b/src/server-types.ts
index 9798ca8..9e5a095 100644
--- a/src/server-types.ts
+++ b/src/server-types.ts
@@ -74,6 +74,7 @@ export interface ServerSettings {
 	emailLoginTokenChars: string
 	emailLoginTokenLength: number
 	emailResendWaitTime: number
+	customAliasSuffixLength: number
 }
 
 export interface Alias {
@@ -95,6 +96,7 @@ export interface AliasList {
 	domain: string
 	local: string
 	isActive: boolean
+	type: AliasType
 }
 
 export interface Report {