How to change your sender email address and sender name

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Learn how to change the sender email address and sender name in your Klaviyo account.

If your emails end up in the spam folder when getting started with Klaviyo, your sender email address may be a Gmail, Yahoo, or another free email. Sending mass email from a personal address can cause inbox providers to flag messages as spam, as this is considered suspicious activity.

Before you start sending to your customers, make sure that you have an email address that includes your domain name. For example, you'll want your sender email address to look like yourname@yourbusiness.com. This indicates to inbox providers that you are a legitimate sender with a legitimate business.

Changing your sender information

To edit the default sender email and name settings for your business:

1. Navigate to the account menu in the bottom left corner of Klaviyo.
2. Select Settings.
3. Select General > Account.
4. Edit Default sender email address or Default sender name.
5. Click Save to save your changes.

After changing your default sender email address or name, any email created after this will reflect the change. However, pre-existing flows and campaigns do not automatically update. Use the bulk-update options below to change existing sender email addresses, or edit an email individually. To change the sender name in existing emails, update each email individually. Prioritize high-engagement flows such as your welcome series, browse abandonment, and abandoned cart flows.

Changing your sender information for a single email

Campaign email

1. Open the campaign you want to edit and select the Message step.
2. Edit Sender name or Sender email.
3. Click Next to save and continue to Review.

Flow email

If the email is part of a live A/B test, saving sender changes opens a dialog where you choose to end the test and publish a new one, or continue the current test with your changes.

1. Open the flow email’s overview and select Message content.
2. Edit Sender name or Sender email address.
3. Click Done to save and return to the flow.

Sending domain alignment for transactional flows

If your account has separate branded sending domains for different send types (marketing, transactional, service), Klaviyo routes each message through the active domain for its send type.

For a transactional flow message, that means routing through your transactional branded sending domain if you have one. For Klaviyo to use the transactional domain, the message must be designated as transactional in the flow editor. A message awaiting transactional approval is not yet treated as transactional. For details on designation, see Understanding transactional messages.

For more on send types and configuration, see How to set up a branded sending domain.

Bulk update your sender email address

You can apply your account's default sender email address to existing campaign and flow emails in bulk. For campaigns, you can only update the entire email address. For flows, you can choose to update the entire sender email address, or just the domain. Sender names and separately configured reply-to addresses stay unchanged.

• For campaigns and personal messages, bulk updates apply to scheduled messages and drafts created in the past 60 days. Campaigns returned to draft after scheduling are also included, even if older. Messages scheduled to send in less than 15 minutes are skipped, and sent messages are not updated.
• For flows, bulk updates include email and internal alert actions. Updating just the domain keeps the part of each sender email address before the @ symbol.

To update existing sender email addresses in bulk:

1. Navigate to the account menu in the bottom left corner of Klaviyo.
2. Select Settings.
3. Select General > Account.
4. Check Default sender email address. If you change it, click Save.
5. If the Update existing addresses dialog is not already open, click Apply sender email to all messages.
6. Choose an option for campaigns and an option for flows. You can apply the default address, update only the domain for flows, or select Leave existing email addresses for either group.
7. Select Confirm choices to apply your selected updates.

Changing your reply-to email without changing your main sender email

Replies go to the sender email address unless you set a separate reply-to address. To change only where replies are sent, leave the sender email address unchanged and follow these steps:

1. Open the campaign’s Message step or the flow email’s Message content tab, as described above.
2. Uncheck Use as reply-to for a campaign, or Use this as your reply-to address for a flow email.
3. Enter the email address that should receive replies in Reply-to address.
4. Click Next for a campaign or Done for a flow email to save your changes.

Additional resources