When you start a new campaign, your emails are automatically scheduled to send as soon as possible within your set sending window. However, several factors can affect the sending process and campaign duration.

In this help article, you will learn more about:

When you create an email campaign in Hunter, they will all be visible in the Campaigns section. Each campaign will be listed in order of creation, with the newest one on top. You can see the date of creation, the campaign's performance stats, the email campaign status, the estimated time to be sent and the progression.

👉 An email campaign can have different statuses:

To filter your email campaigns by status, simply select Status at the top left and choose the status you want to filter from the dropdown menu. Now click on Apply filter.

Once filtered, only campaigns with the requested status will be displayed. This allows you to have a better overview of your email campaigns.

The Est. next send column Includes the time and day when the next email for an active or scheduled campaign is expected to be sent.

This is an estimation, as multiple factors can influence the estimated time for a campaign to be sent. There's no certain way to predict the exact delivery date of an email.

Some of the factors that can influence the expected sending time are:

The Progression colllumn provides a visual representation of the email campaign’s progression. Each bar corresponds to a campaign step (e.g., first email, follow-up 1).

Hovering over the progression reveals a tooltip displaying the status of each email step. Here’s a summary of the progression statuses:

Based on the type of email account you connect to Hunter, you'll have a different daily sending limit:

To limit the risk of being rate-limited by your email provider (in particular, if your email account has been recently created), we have set the default daily sending limit to 15 emails per day.

👉 However, you can increase or decrease this limit at any time from the Email Account Settings in Campaigns.

We recommend increasing the daily sending limit only once you have properly warmed up your email account and started getting high open and reply rates for your email campaigns.

Your sending window in Hunter: A narrow window and/or a large delay between emails will increase the duration of your campaign. You can either use the default sending window or override it and use a custom sending window for each campaign, from the settings step of your campaign as well.

When an email campaign is sending emails, you can see a Live status update in the Campaigns section:

You can click the Queue link to see what emails will be sent in the next 15 minutes and the scheduled emails.

Here, you can set different filters, such as filtering by the sender email address, by a specific email campaign name, or by a team member:

The following views will provide you with a breakdown of the pending and scheduled emails.

The emails queuing to be sent in the next 5 minutes are added to the Outbox, and the view is also automatically refreshed.

This section lists all the scheduled emails. Based on your sending window, they will be progressively added to the Outbox.

Based on the type of email account you’ve connected in Campaigns, we set different daily sending limits.

These limits apply to the Free and paid plans.

💡We recommend setting significantly lower daily sending limits to ensure better email deliverability. By default, we set the daily sending volume to 15 emails per day for each email account connected to Campaigns.

To avoid potential blocks from your email service provider, we recommend only gradually increasing the daily sending limit in Campaigns’ Settings to avoid blocks from your email service provider.

👉Learn how to warm up your email domain for sending HERE.

If you have a paid Hunter account, it is possible to connect multiple email accounts, which will increase the total number of emails you can send per day.

For instance, if you have 3 connected Gmail/Google Workspace accounts, each sending 400 emails per day, this would mean you could technically send 1,200 emails per day on a Starter plan.

For more information on the number of email accounts you can connect for each plan, click here.

Yes, you have several options to verify your leads before reaching out, depending on how you add your recipients.

It’s highly recommended to verify your recipients email addresses before launching a cold email campaign, as email statuses can change quickly. Verifying your leads helps reduce bounce rates and protects your email reputation.

When you import your recipient directly from a CSV, you can automatically verify them as they are being added to the campaign. By checking the Verify the email addresses box.

Once you have added your leads to your email campaign's Audience you can also verify the email addresses before launching your campaign.

Hunter will tell you the percentage of unverified emails in your Audience list and allow you to Test all unverified email addresses or verify single emails by clicking on Verify email.

You can add your recipients to your email campaign audience from a People's list you already have. You can verify your leads inside the Leads section and add them to an email campaign from there or filter the list by Verification status when adding recipients to a campaign through the From Leads option.

Yes, you can schedule your email campaign to be sent on a specific date.

To do so, go to the Settings tab of your email campaign, click on the checkbox beside "Start the Campaign on a specific day".

Next, click the search box and select the day you wish your email campaign to start in the calendar.

Save the schedule, by clicking on the orange Save Schedule button. That's it!

The starting date and planned status will be displayed at the top of your campaign:

Scheduled Campaigns will have a status Planned in the Campaigns section until they start sending, as well as an estimated next send date.

Yes, it is certainly possible to have follow-up emails sent in the same thread as the initial email.
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👉 If the subject line of the follow-up email is left empty, the follow-up will automatically be attached to the same thread as the initial email and will re-use the initial email's subject line.
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Keep in mind that to ensure emails are viewed as conversations in the recipients' inboxes, recipients should enable this option with their email provider.
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These Outlook and Gmail articles explain how to toggle this setting to enable group conversations within a mailbox. Please note that as this option is set at the inbox level, it cannot be set within Hunter.

You can send up to 5 follow-ups per campaign. For each follow-up, you can choose the waiting period before the follow-up is automatically sent, which can go from 1 to 30 days.

If your campaign isn’t sending emails, it’s usually due to one of the reasons below. Check the associated campaign status in Hunter to identify the cause and follow the fix.

Status: Paused or Completed

Fix:

Status: On hold – Outside of sending window

Why it happens: The campaign is scheduled to send only on specific days/hours, and it’s currently outside that window.

Fix:

Status: On hold – Waiting for sending limit reset

Why it happens: The email account reached its daily send limit.

Fix:

🕒 The daily sending limit resets at midnight (00:00 AM) based on the account’s time zone.

Status: Preparing

Why it happens: New campaigns take a few minutes to schedule emails before sending starts.

Fix:

Status: Error – One or more email accounts have been disconnected

Why it happens: One or more connected email accounts lost their connection.

Fix:

Status: Error – This campaign has no email accounts

Why it happens: No sender account is linked to the campaign.

Fix:

Status: On hold – Waiting for other campaigns

Why it happens: Another campaign using the same email account is ahead in the sending queue. Older campaigns are always prioritized over newer campaigns.

Fix:

Status: On hold – Waiting for follow-ups

Why it happens: The follow-up delay you set hasn’t passed yet.

Fix:

⏳Follow-up emails are sent based on the delay (in days) you set in the Content tab.

For example, if the first email was sent on June 26 at 3:45 PM and you scheduled a follow-up for 2 days later, the next email will be sent on June 28 at 3:45 PM, provided it falls within your sending window.

Even if your sending window starts earlier (e.g., 9 AM), follow-ups will always be sent exactly after the set number of full days from the previous email.

If you’re unsure which issue is preventing sends:

If you have sent a test email using Campaigns but have not yet received the test email in your mailbox, there could be several causes preventing delivery.

It's important to check a few things first:

If none of these seem to be the cause of the issue, you would need to then look into other deliverability issues coming from your mailbox.
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While it can always be tricky to spot and fix deliverability issues, to start you can check how your sender reputation is currently doing.
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To do so, we suggest using one of these services:

You can also check to ensure your mailbox has SPF and DMARC records set up, as these protocols are crucial to help authenticate your email and improve email deliverability.

​If these records have not been set up for your mailbox, we have a guide on how to do so here. Once this step is completed you can re-try sending.

If the issue persists after performing all of the checks above, please don't hesitate to contact us for further troubleshooting.

There is currently no way to resume sending for the same campaign after receiving an automatic reply. However, as a workaround, we recommend duplicating the campaign's content and creating a dedicated campaign that only uses follow-up emails. This way, if a recipient is prematurely cancelled within a campaign, you can add them into this nurture sequence.
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👉 There are a few simple steps to set this up:

While we know this is not a perfect solution and are working to improve this functionality, this workaround will ensure no recipients fall through the cracks once you've begun your outreach.

If you have any trouble with this workflow, please don't hesitate to contact us; we'd be happy to provide more personalized instructions for your use case.

When using Campaigns to send emails, an “error” status can occur in case your emails cannot be sent due to an error.

There are two possible Error messages you will see when you try to send emails that have an Error sending status:

This error can occur when you have a custom setup on your end. For instance, using Exchange Servers with a hybrid/custom deployment.

This seems to be a known issue with Microsoft that other apps are facing that hasn't been resolved. Due to that, you could look into the setup that you currently have for your email account.

This issue can occur when there is a custom Outlook setup in play. This means you will need to look into your setup and/or contact Microsoft to see if they can resolve this issue on their end.
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​2. The server responded with status 429

This happens when too many requests have been sent to the email provider's API. This means that you have probably sent many emails too quickly.

This can also happen if you are using the Outlook/Gmail API from another platform and that causes you to go over the number of requests that Outlook/Gmail allows.

Need more help regarding errors? Get support via chat or email (contact@hunter.io).

While we do not have an A/B testing feature, you can create two campaigns and split your list of leads into two as a potential workaround.

You can also easily duplicate the content of an email campaign to minimize your workload:

You will automatically be redirected to a new campaign with the same duplicated email content, including any follow-ups you may have.

👉We'd love to hear from you. Reach out to us via chat or email (contact@hunter.io) on how creating A/B tests would improve your workflow. Your feedback goes directly to our Product team and helps us shape the future of Hunter for users around the world.

Yes, it is possible to change the default email sender within Campaigns.
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To do this, go into your Email Account Settings and click "edit" next to the account you would like to establish as the default sender as shown here:
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From there, check the box shown below to make this account the default sender:
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Once updated, the default sending preference will be saved and applied to the account.
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Once this mailbox is set as the default sender, this address will be pre-selected when you start a new campaign.

Yes, you can send emails in Campaigns using an alias if you have a Gmail or Google Workspace account. Once you have connected your email account in the Email Account Setting in Campaigns you can select one of your aliases to send the emails from.

👉 In the Email Account Settings, click on the Edit button beside the connected email account to open a new window that allows you to make some edits to your account.

Now, simply click on Send emails from to open the dropdown menu and select the alias you wish to use for sending emails.

If you're on one of our All-in-one outreach plans, you can connect email accounts to send cold emails from within Campaigns.

By default, you can connect the following number of email accounts based on the plan you're on:

💡 This quota is counted at the team level: it's the total number of email accounts that team members can connect to in Campaigns.

It is also possible to add additional email accounts to your current plan without having to upgrade to a bigger plan. To learn more about this, we recommend checking the following article:

Email accounts can be connected in the Email Accounts section:

The supported types of providers are:

You can add additional email accounts to any paid All-in-one outreach platform subscription in two ways:

👉 Why connect more email accounts?

The more email accounts you connect to Hunter, the more emails you can send daily, either by using email account rotation or by setting up more campaigns with individual email accounts - both can help avoid hitting sending limits and damaging your email reputation.

Depending on the plan you are currently subscribed to and how many email accounts you want to connect to, it might be more beneficial to stick with the same plan and add additional email accounts or upgrade to a higher plan.

To ensure we can assist you in making the most cost-efficient decision for your use case, don't hesitate to email us at contact@hunter.io or start a new chat.

👉 The Free Plan includes up to 1 email account. To add more, you would need to upgrade to a paid plan.

In the Subscription section of your account, on the left side of your current plan details, under the Quotas section, click on Add:

A new window will pop up asking you to increase or decrease the number and continue with the purchase to be redirected to the checkout page.

Before updating your plan, you can preview the total number of email accounts in your subscription, including the selected additional email accounts.

If the number of email accounts you want to add makes it worth upgrading to a higher plan, you can do so from the Subscription area of your account.

In the Subscription section of your account, click on Change my plan on the right side of your current plan details:

You will be taken to the pricing page, where you can change the plan to one with more email accounts.

Once you have chosen the right plan for you, click on Select and you will be taken to the checkout page, where you will see a review of the new subscription and confirm the change.

Yes, you can!

Each plan includes a certain number of email accounts that can be connected to the Campaigns tool by default, and you can also add additional email accounts at a unit price per month if you are on a paid plan.

👉 Learn how to purchase additional email account connection from here.

Here's a breakdown of how many email accounts are included per plan and the price to include more:

You can check all of our plans by clicking the link below:

Yes, you can!

We currently support the following email sender accounts for the Campaigns functionality:

The SMTP/IMAP connection is available on all paid plans.

To successfully connect your account with Hunter through an SMTP connection, check the following step-by-step guide:

If you’re on a paid plan, you can connect more email accounts to the Campaigns tool for a monthly fee per account.

Each Hunter plan includes a set number of email accounts you can use to send emails in Campaigns by default. Here’s the breakdown:

You can check all of our plans below:

You can connect the following email services to Hunter Campaigns:

Learn more about connecting email accounts →

When sending emails with Hunter Campaigns, the following settings are applied:

When an email is opened from a recipient (a prospect we have found in Hunter or imported from an existing database, it should feel like a personal message sent from a sender and not like a newsletter or a generic email created with a non-personalized template.

If you are tempted to include a long copy, multiple images or attachments and special text formatting, make sure to ask yourself if you'd be interested in opening, reading and replying to a similar email.

👉 The average attention span for emails is approximately 8 seconds!

Yes, click tracking in your campaigns is available on any of our paid all-in-one outreach platform plans. When you enable click tracking, you will know when a recipient clicks on any of the links that you have included in the content of your emails.

In the Emails tab of your campaign, you can also see which of your recipients clicked your links, and how many times. If your campaign contains multiple links, while they will all be tracked, it will not be possible to know which specific one was clicked.

The option is enabled by default, but you can disable link tracking in the Settings tab of your email campaign before launching it.

If you are on a paid plan, you can add images and GIFs to your campaign content.

Currently, we don’t support the ability to include a hyperlink to an image. We try to keep the features for Campaigns as simple as possible to mimic emails that would be sent manually, directly from an inbox.

Either way, we'd love to hear from you. Reach out to us via chat or email (contact@hunter.io) on how adding links to images would improve your workflow.

Your feedback goes directly to our Product team and helps us shape the future of Hunter for users around the world.

When running a campaign, there are multiple statuses that can be used to denote what stage of the campaign a recipient is in. One of the statuses is the "Successful" status.
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Unlike the other statuses, this status is not automatic based on a trigger event and instead is something you can manually set.
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This status means the intention of the campaign has been achieved and you consider the outreach to be finished with a positive result.

The "Successful" status can be manually applied to any recipient you consider to be successful, whether that means a conversion, reply, or engagement, such as clicking a link.
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This can be helpful to differentiate between recipients who replied with a "not interested" reply and recipients who have had a positive reply, or to mark those who may have reached out to you via other means (such as booking a call) as successful.

You can mark a recipients as successful either in the Inbox (if they have replied):
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Or, within the Engagement tab (if they have opened or clicked your email):
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Manually setting a recipient's status to "Successful" will stop any further communication for the ongoing campaign, meaning further follow-ups will be cancelled for that lead.

When using the "Successful" status within Campaigns, you can see the statistics for the recipients you've marked as successful in multiple places.

First, you can take a look at this statistic per campaign with the statistics section of any campaign:

Or, if you're on a premium plan you can see statistics for this metric across all of your campaigns within your specified time frame using the Reporting section.

💡 Questions about the "Successful" status and how it can be helpful for your use case? Reach out to our Support Team for help!

Filtering your campaigns in the Campaigns section is simple—you can easily display only those created by you or a specific team member.

👉 To do so, go to your Campaigns section where you will see two types of filters:

To narrow down your list of campaigns to only those created by you, a team member, or a connected email account click on the Team members or on the Email accounts filter and select the desired team member. Click on Apply filters.

This is a multi-select option, therefore, you can select just one team member at a time, or as many as you'd like at once.

Yes, you can absolutely delete and archive campaigns within Hunter!

If your campaign is still a draft and has not yet been launched, you can delete the campaign entirely by selecting the campaign, and opening up the drop down menu as shown here:

You will always receive a warning before the campaign draft is deleted as this action is permanent.

If your campaign has already been launched, you cannot delete the campaign. Instead, you can archive the campaign once you're finished with it to remove it from your main view as shown here:

You will always receive a warning before the campaign is archived as this action is permanent.

Sending statuses in Hunter Campaigns show the current stage of outreach for each recipient. They help you understand whether an email has been sent, opened, clicked, replied to, or if there were delivery issues.

This guide explains all possible statuses, what they mean, and where to view them in Hunter.

Hunter Campaigns can assign 10 different statuses to a recipient:

You can see and filter sending statuses in several areas of Hunter:

Within Leads you can also filter your leads by their current sending status as shown below:

For example, you could filter your list to only see leads with the "Never contacted" status so you know exactly who you need to reach out to next.

You can also filter by any other sending statuses to separate your leads however you'd like, and you can select more than one status at a time to create dynamic lists.

ℹ️ If you don’t see the Sending Status column, click the “+” button on the right side of the column header section to enable and display it.

💡 Need help understanding a sending status or troubleshooting delivery issues? Contact Hunter Support — we’re happy to assist.