Create a Vertical Line in an Outlook Email Signature

To create a vertical line in an Outlook signature, use a two-column table and show only the border between its columns; for a quick text-only divider, type a vertical bar character (|). The table method gives you more control over spacing and alignment, while the character method is simpler to set up.

Choose the kind of line you need

A vertical divider can separate details such as your name and job title from your phone number, address, or logo. There are two practical approaches, and the right one depends on how polished and consistent the signature needs to look.

Table border: Make a two-column table, put one group of details in each column, and leave only the middle border visible. This creates a true rule rather than a typed symbol.
Vertical bar: Type | between text items, such as Phone: 555-0100 | example.com. This is quick, but it behaves like text and may sit differently from a drawn line.
Pasted line or graphic: A line copied from another editor or inserted as an image can work, but it may resize, move, or be blocked in some email clients. Use it only when you can check the result in the messages you send.

For a business signature that should remain readable in different email apps, start with text and a table border. Avoid building the whole signature as one image: recipients may not see it if images are blocked, and they cannot easily select or copy the contact details.

Create a divider with a table in classic Outlook for Windows

In classic Outlook for Microsoft 365 on Windows, the signature editor is available through the Outlook options. A two-column table lets the text on both sides wrap independently, so a long title or phone number is less likely to push the divider out of place.

Open Outlook and choose File > Options > Mail > Signatures.
Select an existing signature to edit, or choose New and give the signature a name.
Click in the signature editing area. Use the editor’s table command to insert a table with one row and two columns.
Put the first set of details in the left cell and the second set in the right cell. For example, place your name and role on the left, and your phone number and website on the right.
Click in the table to show its table tools. In Table Design > Borders, remove the existing borders with No Border.
Select the left cell, then use Table Design > Borders > Right Border. This leaves a single vertical rule between the two columns. If you prefer, select the right cell and apply a left border instead.
Adjust the column widths and the space around the text, then choose Save and set the signature as the default for new messages or replies if desired.

The exact table controls can look different depending on the Outlook build and the editor ribbon shown when the table is selected. If the signature box does not show table tools, create the table in a new message or in Word, format it there, and copy it into the signature editor. Send yourself a test message before using it regularly; copying between editors can change borders or spacing.

Use a vertical bar for a quick text divider

The simplest method needs no table. Click where the separator should appear in the signature and type the vertical bar on your keyboard. On many US keyboards, it is entered with Shift + \; keyboard layouts vary, so the key location may differ. You can also copy this character: |.

For example, a compact line might read Jordan Lee | Customer Support | example.com. A bar is easy to include in a one-line contact block, but it is not a full-height rule. If you put it between several lines, each bar is part of that line’s text, and the separators may not line up when the message is displayed with a different font or window width.

Keep spaces on both sides of the symbol to make it easier to read. Avoid using a long row of bars or underscores to imitate a rule: proportional fonts and line wrapping make those characters uneven. Also avoid the lowercase letter l or uppercase I as substitutes; they can look like a line in one font and like letters in another.

Set up the signature in new Outlook, Outlook on the web, or Mac

Outlook has more than one signature editor, and the available formatting controls depend on which version you use. The visual idea is the same, but do not assume that a signature created in one app will have identical editing controls in another.

New Outlook for Windows: Open Settings > Accounts > Signatures, create or edit the signature, and save it. If the editor offers a table option, use a two-column table and apply only its center border. If it does not, use the vertical bar or prepare a formatted table in a message and paste it in.
Outlook on the web: Open Settings > Mail > Compose and reply and edit the email signature. The web editor’s controls can change, so use a table only if the editor exposes that option; otherwise, a text bar is the straightforward choice.
Outlook for Mac: Open Outlook > Settings > Signatures and edit the relevant signature. Mac layouts and editor controls differ from Windows. If you cannot insert or format a table in that editor, use a bar or paste a small table from a message and verify the result.

New Outlook and Outlook on the web can share settings in some account configurations, but signature behavior is not always identical across accounts or devices. If the signature matters for a shared mailbox or a work account, check which account the editor is changing and send a test from that account.

Format the line so it stays readable

A divider should organize the signature, not dominate it. Use a thin border with enough white space on either side. If the line touches the text, widen the table columns or add cell padding where the editor allows it. A border that is too dark or thick can make a short signature look like a form.

For example, a balanced two-column layout could put Jordan Lee and Customer Support in the left cell, with a phone number and website in the right cell. Keep related details together. If the signature contains a logo, place it in a cell only if it stays small and does not force the text into a narrow column.

Use ordinary text for names, roles, phone numbers, and links so recipients can select and copy them. A dark gray or restrained brand color may suit the border, but color alone should not carry meaning: the information should still make sense if a recipient’s email app changes the color or uses a dark theme.

Check the signature in a real message

The signature editor is only a preview. Before relying on the divider, create a new message and send it to yourself, then open it in the desktop app, a browser, or a phone if those are common ways you read mail. Check both a new message and a reply, since the signature may be assigned differently for each.

Look for these common issues:

The line disappears: Confirm that the border was applied to a table cell, not just selected as a formatting preview. Reapply the single center border and send another test.
Every table edge is visible: Remove all borders first, then apply only the right border to the left cell or the left border to the right cell.
The line is too short: A cell border follows the height of its row. If one side has fewer lines, the rule may not extend as far as expected. Adjust the content or table layout rather than adding repeated bar characters.
The columns look cramped: Widen the table or shorten the content. A table that fits in the editor may wrap on a narrow phone screen.
The divider shifts in replies: Check whether quoted text, reply formatting, or a different default signature is affecting the layout. Test the actual reply format you use.

Table border versus typed character

A table border is usually the better choice when you want one continuous vertical rule between two blocks. It can align with a group of several text lines and can be adjusted independently of the text. Its trade-off is that table editing is less convenient, and its appearance may vary slightly when messages are rendered by different email services.

A typed bar is better for a compact, single-line signature or when the editor has limited formatting controls. It is easy to edit and does not depend on table-border support, but it will not create a full-height divider. A graphic line offers the least flexibility for ordinary contact details because it is harder to resize accessibly and can be hidden along with other images.

Neither method requires a paid add-in. Outlook’s built-in signature settings are sufficient for a basic divider; any extra cost would only be for a separate signature-management product or design service, which is unnecessary for this simple layout.

Frequently Asked Questions

Can I insert a straight vertical line in an Outlook signature?
Yes. The most reliable formatted approach is a two-column table with only the border between the columns enabled. For a plain text separator, type a vertical bar: |.

Why does my vertical line show in the editor but not in the email?
The border may not have been applied to the cell, or the editor may have changed the formatting during sending. Remove all table borders, apply the center border again, and send yourself a test message to check the delivered version.

Can I use the | character instead of a table?
Yes. It is a good choice for separating items on one line, such as a phone number and website. It does not make a continuous rule alongside several lines of text, and its spacing depends on the font.

How do I make the line longer?
With a table, the rule extends to the height of its row. Add or arrange content in the cells, or adjust the table’s spacing if the editor provides that control. A typed bar cannot be stretched into a dependable full-height rule.

Will the signature look the same on phones and in replies?
Not always. Screen width, email-client rendering, and reply formatting can change wrapping or spacing. Keep the layout simple and test a new message and a reply on the devices or apps your recipients are likely to use.

Can I add a vertical line to an Outlook signature on my phone?
Mobile Outlook may let you edit a basic signature, but its formatting controls are more limited than the desktop editors. Create or format a table on a desktop when possible; otherwise, use a simple text bar and check how the signature appears on mobile.

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