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How to Send Bulk Emails: The Complete Guide for 2025

Did you know that sending bulk emails incorrectly could get your account flagged or disabled?

Whether you’re navigating Gmail’s daily limits or trying to keep your emails out of spam folders, bulk emailing can feel like a high-stakes game. But don’t worry – with the right tools and strategies, you can master it.

Read our guide, get ready to send smarter, not harder, and watch your email campaigns drive the results you’ve been hoping for!

How to send bulk emails through Gmail, step by step

Sending bulk emails through Gmail can be tricky if you’re new to it. Below are simple, step-by-step.

Understand Gmail’s sending limits

Before you begin, be aware of Gmail’s daily email limits:

Exceeding these limits can get your account temporarily disabled or flagged as spam, so plan accordingly. You can read more about the limits on the Google Support page.

Send messages directly from Gmail

Steps:

Note: Gmail limits the BCC field to about 90 recipients per email. For 500 emails, you’ll need to send your email multiple times.

Tips:

Pros: No additional tools needed.
Cons: Labor-intensive for large lists, limited personalization.

Connect Gmail with a bulk sending platform for enhanced personalization and no limits

Makes it easy to streamline your email outreach by connecting Gmail to send bulk emails. Follow this step-by-step guide to connect your Gmail account to and leverage its automation features for your campaigns.

Connect your Gmail account

Step 1: Open Campaign Settings

Alternatively:

Step 2: Select Gmail as your email provider

Step 3: Grant permissions

Step 4: Set your name and signature

Step 5: Save and test connection

Configure SPF and DKIM for better deliverability

To ensure your emails land in recipients’ inboxes, set up SPF and DKIM records for your domain.

SPF Record Setup

Here’s a code to copy: v=spf1 include:_spf.google.com ~all

DKIM Setup

Warm up your email account

Before sending large email volumes, warm up your Gmail account. Increase your daily sending limit gradually. A warm-up helps avoid being flagged as spam.

Use Digital Media Booster for bulk email campaigns

Once your Gmail is connected:

Monitor deliverability

Automatically tests your email deliverability daily, sending a test email to an internal address. Then, you can be sure that your SPF, DKIM, and other settings are functioning correctly.

Why to connect Gmail? Benefits

You might think sending bulk emails through a standard Gmail account is enough, but Gmail users often hit limits, land in the spam folder, or struggle with scaling outreach.

That’s where DMB steps in, transforming Gmail into a powerful tool for mass emailing while protecting your Gmail inbox and ensuring high deliverability.

Here are more benefits:

✅ Optimized deliverability – land in inboxes, not spam

Offers advanced features like SPF/DKIM validationdeliverability monitoring, and a spam words checker, ensuring your emails land in the recipient’s inbox. Gmail users often face the challenge of emails being flagged as spam, especially when sending mass emails. 

✅ Advanced automation for cold email outreach

For businesses and agencies managing bulk email campaigns, Eliminates manual hassle with features like:

Cold email outreach can feel impersonal and robotic. ensures each recipient feels like they’re receiving an email tailored just for them.

✅ Multi-account flexibility for agencies and teams

Managing multiple Gmail accounts? Agency panel simplifies everything:

Digital Media Booster is ideal for agencies handling mass emailing across multiple clients or teams managing several Gmail accounts.

✅ Personalization without limits

A one-size-fits-all approach to bulk email rarely works.

✅ Comprehensive Stats to Refine Campaigns

Want to know how your mass emails are performing? 

By monitoring your results, you can tweak subject lines, timing, and content to achieve even better results with each Gmail account you connect.

✅ Multichannel outreach beyond Gmail

Emails are just the start. Integrates with LinkedIn, allowing you to create combined email-LinkedIn-call sequences. This multichannel approach helps Gmail users take their bulk email campaigns to the next level.

Segment your audience

You might think sending bulk emails to multiple contacts without much thought will get the job done, but here’s the truth: relevance matters. If your emails don’t speak directly to your audience, they’ll land in spam.

You can craft a more personalized message for each segment when you group your audience based on shared traits – like location, interests, or buying behavior.

Instead of sending a generic email to everyone, segmentation ensures your content resonates with each group. The result? Higher engagement rates and fewer unsubscribes.

For example:

Personalize where possible

You’ve probably opened a bulk email and thought, “This isn’t for me,” before deleting it without a second glance. That’s exactly what happens when email recipients feel like another name on a list.

Personalization changes everything. Tools like DMB can turn a cold, generic email campaign into a tailor-made message. Adding a first name or a specific detail can mean the difference between a click and the trash bin.

Create great subject lines

Your subject line is the first – and sometimes only – chance to grab attention in a crowded Gmail inbox. A dull or vague subject can get your email ignored, no matter how great your content is. But a well-crafted subject line?

That’s a way to get noticed, even when you send mass emails individually or to hundreds of recipients.

How to write your subject line?

➡️ Avoid leaving your recipients guessing. A subject line like “Your Weekly Update” is too vague. Instead, try something specific: “Exclusive Deals Just for You – Limited Time!”

➡️ Most inboxes only display the subject line’s first 40–50 characters. Get straight to the point while making it interesting.

➡️ Inspire your recipients to act. Words like “Discover,” “Unlock,” or “Claim” can create a sense of urgency and excitement.

➡️ Add a personal touch by including the recipient’s name or something relevant to them. For example: “Sarah, Here’s Your Free Ebook!”

➡️ Overuse of caps, excessive punctuation, or spammy words like “Free Money!!!” can send your email straight to the junk folder.

Use clear calls to action

Sending a mass email without a clear call to action (CTA) leaves your audience unsure of what to do next. Whether emailing from multiple email accounts or contacting your Google Contacts, a strong call to action guides recipients toward the next step.

Keep it simple and specific with phrases like “Download Now” or “Sign Up Today” that clearly outline the next step. Use bold text or buttons to make your CTA more noticeable and create urgency.

Align your CTA with the email’s purpose and avoid overwhelming readers with too many options – one strong, focused CTA can turn your emails into actionable opportunities.

Use A/B testing

Sending out the same email messages across multiple accounts is a gamble. A/B (or split) testing shows what resonates with your audience.

Test small tweaks – subject lines, CTAs, or timing – and watch how these adjustments boost engagement rates. For example, one subject line might draw clicks while another goes unnoticed. Even from your email address, A/B testing helps refine your campaigns and ensures every email is a step closer to perfection.

Comply with email laws

Ignoring email laws could cost more than your reputation – it could shut down your email messages entirely. Whether you send emails from multiple accounts or your email address, complying with regulations like GDPR and CAN-SPAM keeps them legal and professional.

Include clear unsubscribe options, sender details, and ensure recipients’ consent. These steps keep you compliant and establish trust with your audience.

Use analytics to refine campaigns

Analytics tools help you see what’s working in your personalized emails and what’s not. Open rates, click-throughs, and reply rates reveal whether your subject lines, CTAs, or email templates are effective.

For example, if one email template performs better than another, you can tweak future campaigns to replicate its success. Based on these metrics, you can refine how you send emails, ensuring every message resonates and delivers measurable results.

Avoid over-automation

Scheduling tools and automated email templates can help you send emails at scale, but over-automation can lead to generic, impersonal messages that alienate recipients.

Balance is key—use automation to handle repetitive tasks but add manual personalization where it matters most. For instance, a thoughtful greeting or a customized CTA can make your emails feel authentic.

Your audience will appreciate the extra effort, and your campaigns will stand out in a sea of automation.

Get More Info : Bulk Email Sending Service in Pakistan

 

 

 

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