1
Aionda Mail
mail.aionda.comAlso covers calendar and private email
Aionda Mail offers email, calendar, and contacts with end-to-end encryption using post-quantum cryptography, including ML-KEM-1024.
Alternatives
The Best Posteo Alternatives in 2026
24 alternatives9 free · 0 open source
Looking for something like Posteo? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 9 are free or have a free plan.
Posteo provides ad-free email, calendars, and address books with synchronization, encryption, and paid accounts starting at one euro per month.
Top picks at a glance
First suggestionAionda MailAionda Mail offers email, calendar, and contacts with…Free or freemium optionTempTomCreate a temporary inbox with TempTom for verification…Another optionStartMailStartMail provides private email with encryption and…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Aionda Mail | — | Not stated | Web |
| 2 | StartMail | — | Not stated | Web |
| 3 | Send From Address | — | Not stated | Web |
| 4 | MinuteInbox | — | Not stated | Web |
| 5 | TempTom | Free | Not stated | Android, iOS, Web |
| 6 | Bitwarden Integration | Free | Not stated | Web |
| 7 | Mohmal | — | Not stated | Web |
| 8 | Mailgw | — | Not stated | Web |
| 9 | AnonAddy | — | Not stated | Android, Web |
| 10 | tempail.com | Free | Not stated | Web |
All Posteo alternatives
2
StartMail
startmail.comAlso covers encryption and private email
StartMail provides private email with encryption and customizable aliases, including disposable addresses and one-click encrypted sending.
3
Send From Address
sendfromduck.vercel.appAlso covers private email
Send From Duck explains how to send email from a Duck Address, including available ways to start a message using the alias.
4
MinuteInbox
minuteinbox.comAlso covers private email
Set a temporary inbox duration from ten minutes to one month with MinuteInbox.
5
Also covers private email · free
Create a temporary inbox with TempTom for verification messages and account signups without exposing a personal address.
6
Also covers private email · free
This Bitwarden help article explains how to use its username and password generator to create account credentials.
7
Mohmal
mohmal.com/enAlso covers private email
Mohmal creates temporary disposable email addresses with one click for receiving account activation messages and other incoming mail.
8
Mailgw
mailgw.comAlso covers private email
Control spam through a free Mailgw account using the service’s email anti-spam tools.
9
AnonAddy
gitlab.com/Stjin/anonaddy-androidAlso covers private email
Access your addy.io email-forwarding account from this Android app, which was formerly called AnonAddy.
10
Also covers private email · same kind of online tool · free
Generate a temporary email address with Tempail for receiving messages while keeping a personal address separate.
11
Also covers private email · same kind of online tool · free
Create an anonymous Duckspam inbox using a disposable address to protect a personal mailbox from spam.
12
Also covers private email · same kind of online tool · free
Create a temporary inbox with tmail.io to receive messages and keep a personal address separate from signups.
13
Also covers private email · same kind of online tool · free
Keep spam away from a personal inbox with Temp Mail’s disposable address and temporary inbox.
14
Also covers private email
DuckDuckGo Email Protection offers a free Duck Address for blocking trackers in email while keeping the same inbox.
15
Also covers private email · same kind of online tool · free
TempBoxPro generates free temporary email addresses for anonymous message receipt without registration.
16
Also covers private email
This DuckDuckGo help page explains how to send a new message from a personal Duck Address by replying or using a special recipient format.
17
Also covers private email · free
Open a temporary email address without signing up and receive messages in the Mail.tm inbox.
18
Send Email
simplelogin.io/docs/getting-started/send-emailAlso covers private email
SimpleLogin documentation explains how to send email from an alias, including replying to a message received through that address.
19
AltAddress
altaddress.orgAlso covers private email
Alt Address provides free disposable email addresses, accepts mail across its domains, and keeps messages for three days without requiring registration.
20
AdGuard Temp Mail
adguard.com/adguard-temp-mail/overview.htmlAlso covers private email
AdGuard Temp Mail provides a free disposable email address for reducing spam and protecting personal data, alongside AdGuard Mail apps.
21
SharkLasers
sharklasers.comAlso covers private email
Receive email at a randomly created SharkLasers address that lasts for 60 minutes without registration.
22
Also covers private email · free
Create a disposable email address to receive messages without a signup, helping keep a personal inbox separate.
23
AdGuard Mail
adguard-mail.comAlso covers private email
AdGuard Mail provides email forwarding with aliases and temporary addresses to help keep a personal email address private.
24
Moakt
moakt.comAlso covers private email
Create a temporary disposable email address with Moakt and receive messages in its inbox.
No alternatives match this filter.
Alternatives to similar tools
Send Email24 alternativesBitwarden Integration24 alternativesDuckDuckGo Email Protection24 alternativesTempTom24 alternativesAdGuard Temp Mail24 alternativesSend From Address24 alternatives
What is the best alternative to Posteo?
Based on features, tags and platforms, the closest alternatives to Posteo are Aionda Mail, StartMail, and Send From Address.
Is there a free alternative to Posteo?
Yes. TempTom, Bitwarden Integration, and tempail.com are free or offer a free plan.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative