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Gmail · Outlook · IMAP in one place

Every inbox. One calm workspace.

Stop switching between tabs and apps. Senin Mail brings all your email accounts together with real folders, threaded conversations, a composer with Undo send, and mail that updates while you work.

  • Free during early access
  • No credit card
  • Your mail stays with your provider

Connect what you already use

Works with the accounts you already have

Sign in with Google or Microsoft in one click, or connect any other mailbox with IMAP and SMTP.

  • GmailGoogle Workspace too
  • OutlookMicrosoft 365 & Outlook.com
  • Yahoo Mailwith an app password
  • Titanbusiness email
  • Any IMAPyour own mail server

Everything in one place

A mail client that respects your time

The things you do all day (read, reply, file, search), made fast and consistent across every account.

  • One unified inbox

    All accounts in a single list, or filter to one account with a tap. Unread counts for each.

  • Real folders & labels

    Gmail labels, Outlook folders and IMAP mailboxes, synced. Create, rename, move and delete them.

  • Real conversations

    Threaded view with your own replies, collapsed history and quoted text folded away.

  • A composer that helps

    Docked window, recipient chips with suggestions, Cc/Bcc, rich text and drafts in your mailbox.

  • Undo send

    A 5-second grace period after you press Send, so a typo never has to be a regret.

  • Attachments done right

    Drag and drop up to 20 files (18 MB), preview images, and download with one click.

  • Updates as you work

    Incremental sync keeps every account current, and read or starred state flips the moment it changes.

  • Private by design

    Encrypted credentials, strict per-user isolation, and HTML mail shown in a locked-down sandbox.

One inbox, every account

See everything, or just what matters right now

Work, studio and home mail live together. Switch to a single account in one click, jump to Starred, Sent, Drafts or Trash across all of them, and open any message from a link you can bookmark or share.

  • Account chips with live unread counts
  • Gmail-style links like /inbox/<id>, with Back and Forward that just work
  • Search and Unread / Starred filters, remembered in the URL
  • Read, star, archive, spam and trash with instant feedback
See supported providers

Conversations

Follow the whole thread, not just the last message

Open a message and see the entire conversation, including the replies you sent. Older messages collapse to a line, quoted history hides behind a tap, and a reply box is already waiting.

  • Reply, Reply all and Forward in the same docked window
  • Inline quick reply that stays threaded under the original
  • Links are clickable; email HTML renders safely, remote images stay blocked until you allow them
  • Attachments listed with previews and one-click download
More about reading mail

Writing

A composer that gets out of your way

Write in a docked window while you keep reading. Addresses become chips, contacts autocomplete from your own mail, and your draft is saved to the real Drafts folder as you type, so you can finish it from any other app.

  • Bold, italic, underline, lists, quotes and links
  • Cc and Bcc, multiple recipients, Ctrl/⌘ + Enter to send
  • Undo send, plus automatic recovery if a send fails
  • Up to 50 recipients per message
See all composing features

Organising

Folders that are real, not a copy

Folders and labels you create here appear in Gmail, Outlook and your IMAP server, and the other way round. Move a message, rename a folder, or delete one with a clear warning about what happens to what's inside.

  • Gmail labels, Outlook folders and IMAP mailboxes, synced
  • Archive, Spam and Trash behave exactly like they do at the provider
  • Confirmation before anything destructive
  • Drafts and sent copies land in the right folders
How each provider works

Get going in minutes

From sign-up to one inbox in four steps

  1. Create your account

    Sign up with an email and password. This is only for Senin Mail itself.

  2. Connect a mailbox

    Choose Google or Microsoft and approve access, or enter IMAP details for any other provider.

  3. Your mail syncs

    The most recent mail in every folder appears first; the rest follows in the background.

  4. Work from one place

    Read, reply, file and search across everything. Add more accounts whenever you like.

The details that matter

Built with real limits, stated plainly

No vanity numbers. These are the actual behaviours of the app today.

ways to connect
3

Google, Microsoft, IMAP/SMTP

to undo a sent message
5s
seconds between refreshes
10–15

while the app is open

attachments per message
18 MB

up to 20 files

Why one client

Juggling tabs, or just working?

What changes when every account lives in one place.

Separate webmail tabs compared with Senin Mail
TopicSeparate tabs and appsSenin Mail
Checking mailOpen each account in turnOne list, newest first, with per-account filters
Finding a messageSearch each account separatelyOne search box across everything
ReplyingHope you picked the right senderReplies go out from the account they arrived on
OrganisingDifferent folder models everywhereFolders, labels and mailboxes in one sidebar
AttachmentsDifferent limits and flowsOne drag-and-drop flow, clear limits
Where your mail livesAt each providerStill at each provider. Nothing is moved or copied away.

Made for real days

Who it helps

Three everyday situations where one inbox beats five tabs.

  • Freelancers & consultants

    Client mail spread over personal, studio and project addresses.

    Keep every address in one view, file client threads into folders that also exist in your mailbox, and always reply from the right account.

  • Founders & small teams

    A Workspace account, a support alias and a personal inbox, all urgent.

    Unread counts per account, Starred across all of them, and deep links you can paste into a chat to point a colleague at the exact message.

  • Anyone with more than one email

    An old address you can't quite abandon, plus a new one, plus work.

    Connect Gmail, Outlook and a Yahoo or custom address together. Nothing to migrate, nothing to forward.

Trust

Your mail is yours

We built the boring, important parts first.

  • Encrypted credentials

    OAuth tokens and mailbox passwords are encrypted with AES-256-GCM before they are stored.

  • Strict isolation

    Every request is checked against the signed-in user. Nobody can reach another person's mail.

  • Safe reading

    Received HTML is sanitised and shown in a sandbox with scripts off and remote images blocked.

  • You stay in control

    Disconnect any account whenever you like. Access is revoked and cached copies are removed.

Read the full security overview →

Questions

Frequently asked questions

Which email providers does Senin Mail support?
Gmail and Google Workspace and Outlook.com and Microsoft 365 connect with a normal sign-in (OAuth). Yahoo, Titan and any other provider work over IMAP and SMTP with an app password.
Does Senin Mail replace my existing email accounts?
No. Your mail stays with your provider. Senin Mail is a client: it reads and writes to your real mailboxes, so everything you do also shows up in Gmail, Outlook or any other app you use.
Is it really free?
Yes, during early access. Paid plans are not set up yet, and nothing in the app asks for a card.
How fast does new mail appear?
With the app open, your accounts are re-checked every 10–15 seconds, and immediately when you switch back to the tab. Instant push notifications are on the roadmap.
Is my mail safe?
Tokens and mailbox passwords are encrypted at rest, every request is checked against the signed-in user, and HTML mail is sanitised and shown in a sandbox. Read the security details.
Can I send attachments and formatted mail?
Yes: bold, italics, lists, quotes and links, plus up to 20 attachments totalling 18 MB per message, with drag and drop.

See all questions →

Bring every inbox together

Connect your first account in about a minute. Free while we're in early access.