Spam filter for 1&1 Mail inbox - stop junk mail effectively

Clean up your 1&1 Mail inbox on iPhone, Android, Outlook, and webmail — no email address change needed.

Also known as IONOS Mail.

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Official 1&1 Mail help and settings
Wie der beste Antispam-Service funktioniert, der Junk-Mail verringert

If your 1&1 Mail inbox is filling up with junk mail, phishing attempts, and unwanted marketing email, Spamdrain adds an extra filtering layer and removes unwanted messages quickly as they arrive.

1&1 Mail includes basic spam filtering, but many users still receive newsletters, graymail, and phishing mixed into the inbox. Spamdrain filters the noise and learns quickly from your feedback.

1&1 and IONOS customers often use the same mailbox in webmail and external clients. Spamdrain monitors the mailbox and removes unwanted messages quickly.

We stop junk email and spam

Spamdrain focuses on the types of email that most often slip through built-in filters:

  • Junk newsletters and promotions
  • Phishing attempts and spoofed senders
  • Graymail that clutters your inbox
  • Malicious links and attachments

Common 1&1 Mail inbox issues

  • bulk sender campaigns from partner marketing lists
  • login-reset phishing that imitates hosting or billing notices
  • spoofed administrative messages targeting domain owners
  • repeat junk waves from rotating sender accounts
Junk-Mail-Newsletter einschränken

Popular setups:

Why spam still reaches 1&1 Mail inboxes

Spammers constantly change tactics and often look legitimate. Provider filters must balance false positives, so some junk slips through.

A dedicated filter adds another layer, removing unwanted mail from your mailbox quickly so your 1&1 Mail inbox stays cleaner.

Widely seen in Germany among 1&1 and IONOS contracts, including custom-domain users.

Intelligenter Spam-Junk-Filter

How Spamdrain works with 1&1 Mail

Connect once and keep using your favorite apps.

1.

Connect your mailbox

Add Spamdrain in minutes. No address change needed.

2.

We analyze incoming mail

Spamdrain checks newsletters, graymail, phishing, and spoofing before delivery.

3.

Junk is quarantined

Suspected spam is held back so your inbox stays clean.

4.

You stay in control

Review reports, allow senders, and fine-tune filtering anytime.

Was die Nutzer sagen

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Du zahlst einen geringen Betrag an uns, damit wir deine Daten niemals an Dritte verkaufen müssen (im Gegensatz zu vielen anderen). Wir konzentrieren uns stattdessen voll und ganz darauf, dir den besten Spam-Filter der Welt anzubieten.

Häufig gestellte Fragen

Does Spamdrain work for 1&1 and IONOS mailboxes?
Yes. Spamdrain monitors your 1&1 Mail mailbox and removes unwanted messages quickly for IONOS webmail and connected apps.
Will my existing 1&1 or IONOS address stay the same?
Yes. You keep your mailbox identity, and Spamdrain only changes how incoming mail is screened.
Do I need to switch apps or change my address?
No. Keep using iPhone, Android, Outlook, Apple Mail, and webmail with the same address.
Is it safe to connect my 1&1 Mail mailbox?
Spamdrain uses secure connections and only needs access to filter spam. You stay in control.
Can I customize what gets blocked?
Yes. Allow or block senders and adjust the filter to match your preferences.
How do I get started?
Start a free trial, connect your mailbox, and Spamdrain begins filtering right away.

Take control of your 1&1 Mail inbox

Start your free trial and let Spamdrain clean up the clutter.

Start your free trial