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Email setup in Mozilla Thunderbird

Steps to add your corporate email account with Thunderbird on Windows, Mac and Linux. Written for current Thunderbird versions. Screenshots show the Turkish interface.

Windows, Mac and Linux 5 steps
Before You Start

Have these ready

All the values you will use during setup are below. Replace yourdomain.com with your own domain name; the username is always your full email address, not just the "name" part.

Incoming mail servermail.yourdomain.com
Outgoing mail server (SMTP)mail.yourdomain.com
UsernameYour full email address
IMAP port993 (SSL/TLS)
POP3 port995 (SSL/TLS)
SMTP port587 (STARTTLS)

Want the values filled in for your own address?

The step-by-step email setup wizard asks for your email app and address, then guides you through every screen with settings tailored to your address. We never ask for your password.

Start the wizard
Step by Step

Adding an account in Thunderbird

Thunderbird tries to guess the settings; for corporate addresses, manual configuration is safer.

Step 1 screenshot
Step 1 / 5

Start adding an account

When you first open Thunderbird, the account setup screen appears right away. If you already use the program, follow Add account > Email from the three-line menu at the top right. (In older versions this path appears as New > Existing Mail Account.)

Step 2 screenshot
Step 2 / 5

Enter your name and email address

Fill in the two fields. Do not press the Continue button; click the Configure manually link just below it. This way you enter the correct server details yourself instead of Thunderbird trying to guess.

Your full nameThe name that will appear on your mail
Email addressname@yourdomain.com
Step 3 screenshot
Step 3 / 5

Enter the incoming server settings

Leave the protocol as IMAP (choose POP3 if you only want to keep mail on a single computer). When you type the server name and enter the port, the connection security usually becomes SSL/TLS by itself; if not, select it manually. The username is your full email address.

ProtocolIMAP (recommended) or POP3
Servermail.yourdomain.com
Port993 (IMAP) or 995 (POP3)
Connection securitySSL/TLS
Authentication methodNormal password
UsernameYour full email address
Step 4 screenshot
Step 4 / 5

Enter the outgoing server settings

When you click Continue, the outgoing server screen appears. Enter the same server name, set the port to 587 and choose Normal password as the authentication method. If this field is left empty, you can receive mail but not send it.

ProtocolSMTP
Servermail.yourdomain.com
Port587
Connection securitySTARTTLS
Authentication methodNormal password
UsernameYour full email address
The Test button at the bottom left lets you try the settings. If you get an error, first check the username: it must be your full email address, not the short name.
Step 5 / 5

Enter your password and finish

When you click Continue, Thunderbird connects to the server and asks for your password. Enter the password and tick the Remember password option. After the account is created, send yourself a test email and check whether you receive it.

Where You Got Stuck

Frequently asked questions

Where is the manual configuration link?
After you type the name, address and password, it appears at the bottom of the form, next to the Continue button. If Thunderbird has already started guessing, you can open the fields by clicking "Configure manually".
The test fails
First check the username: it must be your full email address, not the short name. Then check that the authentication method is "Normal password" and check the port numbers.
I receive mail but cannot send
In the outgoing server (SMTP) section, authentication must be "Normal password" and the username must be your full email address. The port must be 587 and the connection security STARTTLS.
Should I choose IMAP or POP3?
IMAP if you check the same mailbox from more than one device. POP3 is suitable if you use only one computer and want to archive mail locally.
The mail I sent does not show on my other devices
If you use IMAP, the Sent, Deleted and Drafts folders must be mapped to the folders on the server. Map them under Advanced > Mailbox Behaviors on iPhone, More Settings > Folders in Outlook and Account Settings > Copies and Folders in Thunderbird. If you use POP3, sent mail stays only on that device anyway; if you use more than one device, switch to IMAP.
What should I do if port 587 is blocked?
Some hotel, café and mobile networks block port 587. In that case, try port 465 with SSL/TLS for the outgoing server. If both are blocked, you need to ask your network administrator; unencrypted port 25 is not used for client sending.
Other Programs

Setting up in another program?

The server details are the same in all of them; only the look of the screens changes.

New Outlook / Outlook 365

Outlook 365 and the new Outlook app

Outlook 2013-2021

Classic Outlook versions (2013-2021)

iPhone and iPad

iOS and iPadOS Mail app

Android

Android phones and tablets

Apple Mail

The Mail app on Mac

Did you get stuck during setup?