High Volume Email Service Providers

With hundreds of email providers available, choosing the right one for your business can be very time consuming and challenging. High volume senders have unique requirement, different from small business owners and bloggers. Most email marketing service providers do not list pricing for higher volumes, which makes the task of comparing unnecessarily more complex. 

In this article we attempt to simplify provider comparison for email marketers working with high volume. We make pricing easy to compare and highlight features that high volume senders may require.

Here are some top considerations for high volume senders:

1. Volume throttling – slowing down sending speed can help deliverability for large lists (over 100k).
2. Custom tracking domain – using a tracking domain that matches sender domain improves trust and can help with inboxing
3. Engagement reporting by mailbox provider – deeper insight can help adjust strategy to improve inboxing and engagement
4. Built-in email validation with spam trap removal – simplify workflows and improve list quality and sender reputation
5. Multi-brand management – for agencies and organizations managing more than 1 brand (aka sub-account)
6. Support for different campaign types – bulk, RSS-to-email, automations, and transactional

BigMailer supports all of the features listed above and allows you to manage all your brands and email campaigns in one place, with exceptional ROI. If you would like a platform tour or discuss your requirements you can book a demo here.

Compare Bulk Email Senders Features and Pricing

If you send a variety of campaign types from different platforms (e.g. transactional from SendGrid and marketing from MailChimp) consider consolidating all your email in a single platform with a single price point, with unified customer data and real-time engagement tracking across email types.

Last Updated: Jan 22, 2026

*Since this post focuses on marketing (aka newsletter or broadcast) email campaigns, we are comparing to SendGrid’s Marketing and not API plans pricing.

**MailGun’s Flex is a pay-as-you-go plan that allows you to send any email frequency, we chose x2 monthly frequency to make it more comparable to SendGrid and SendInBlue.

Advanced Segmentation and Reporting

BigMailer supports merge tags in all fields – email template, subject line, preview, from label, and reply-to label fields. Personalizing your email template, subject line, and preview fields with your subscriber data is known to improve deliverability and inbox placement for high volume senders, as well as improve engagement. BigMailer supports conditional merge tags to allow you greater flexibility. For example, you can use conditional merge tags to provide fallback value if the field is empty. You can also customize your links with campaignID, subscriberID, email, and date merge tags, which is a technique typically used on ad modules or sponsored links to assist with performance tracking.

Unlike Sendgrid, BigMailer allows you to set custom tracking parameters (e.g. utm_ parameters for Google Analytics) on each campaign. Tracking clicks and conversions by campaign, allows you greater insight into your email marketing efforts and ongoing ROI optimizations.

Volume throttling feature can help large volume senders control and improve their email deliverability, especially if the subscriber lists isn’t very diverse and has a lot of gmail/yahoo/aol addresses.

Ready to try it out without a demo? Request features for high volume sending via chat. Get Started For Free »

Frequently Asked Questions

Who uses BigMailer platform? Agencies, email marketing consultants, franchises, media sites (publishers), and bloggers.

Do you have customers who send millions of emails? Yes, many. Some send several millions in a single campaign without volume throttling, some like to throttle volume to spread large send over several hours, some break down into campaigns per list segment.

I have more questions, how can I get answers? Please use chat icon on bottom right, we would love to talk to you.